Updated on 2024/02/02

写真a

 
II Hiroyuki
 
Name of department
Faculty of Systems Engineering, Environmental Science
Job title
Professor
Mail Address
E-mail address
Homepage
External link

Education

  • Chiba University   自然科学研究科   環境科学  

  • Chiba University   Graduate School, Division of National Science and Technology  

  • -
    1982

    Chiba University   Faculty of Science   地学  

Degree

  • (BLANK)

  • (BLANK)

Academic & Professional Experience

  • 1996
    -
    1999

    Wakayama University

  • 1996
    -
    1999

    Wakayama University, Assistant Professor

  • 1989
    -
    1996

    清水建設(株) 研究員

  • 1989
    -
    1996

    Shimizn corporation, Researcher

  • 1987
    -
    1989

    日本原子力研究所 研究員

  • 1987
    -
    1989

    Japan atomic Energy Research Institute, Researcher

  • 1984
    -
    1987

    清水建設(株) 研究員

  • 1984
    -
    1987

    Shimizu Corporation, Researcher

▼display all

Association Memberships

  • 日本鉱物学会

  • 日本地下水学会

  • 日本水環境学会

  • International Association of Hydrogeologists

  • 日本沙漠学会

  • 日本水文科学会

▼display all

Research Areas

  • Social infrastructure (civil Engineering, architecture, disaster prevention) / Hydroengineering

  • Environmental science/Agricultural science / Environmental dynamics

  • Natural sciences / Space and planetary science

Classes (including Experimental Classes, Seminars, Graduation Thesis Guidance, Graduation Research, and Topical Research)

  • 2022   Chemistry of Earth Science   Specialized Subjects

  • 2022   Earth Science II   Specialized Subjects

  • 2022   Earth Science I   Specialized Subjects

  • 2022   Graduation Research   Specialized Subjects

  • 2022   Graduation Research   Specialized Subjects

  • 2022   Seminar and experiment of EcologicalEnvironment Ⅱ   Specialized Subjects

  • 2022   Seminar and experiment of EcologicalEnvironment Ⅰ   Specialized Subjects

  • 2022   Seminar and Experiment for Water and Soil Environments B   Specialized Subjects

  • 2022   Seminar and Experiment for Water and Soil Environments A   Specialized Subjects

  • 2022   Soil and Water Environmental EngineeringA   Specialized Subjects

  • 2022   Environmental Surveys Ⅱ   Specialized Subjects

  • 2022   Seminar in Environmental Science   Specialized Subjects

  • 2022   Introductory Seminar in Systems Engineering   Specialized Subjects

  • 2021   Chemistry of Earth Science   Specialized Subjects

  • 2021   Graduation Research   Specialized Subjects

  • 2021   Environmental Surveys Ⅱ   Specialized Subjects

  • 2021   Seminar in Environmental Science   Specialized Subjects

  • 2021   Earth Science II   Specialized Subjects

  • 2021   Seminar and experiment of EcologicalEnvironment Ⅱ   Specialized Subjects

  • 2021   Seminar and Experiment for Water and Soil Environments B   Specialized Subjects

  • 2021   Earth Science I   Specialized Subjects

  • 2021   Graduation Research   Specialized Subjects

  • 2021   Seminar and experiment of EcologicalEnvironment Ⅰ   Specialized Subjects

  • 2021   Seminar and Experiment for Water and Soil Environments A   Specialized Subjects

  • 2020   Earth Science   Specialized Subjects

  • 2020   Graduation Research   Specialized Subjects

  • 2020   Seminar and Experiment for Ecological Environment   Specialized Subjects

  • 2020   Seminar and Experiment for Ecological Environment   Specialized Subjects

  • 2020   Seminar and Experiment for Water and Soil Environments   Specialized Subjects

  • 2020   Seminar and Experiment for Water and Soil Environments   Specialized Subjects

  • 2020   Seminar in Environmental Science   Specialized Subjects

  • 2020   Chemistry of Earth Science   Specialized Subjects

  • 2020   Introduction to Majors 1   Specialized Subjects

  • 2020   Graduation Research   Specialized Subjects

  • 2020   Seminar and Experiment for Water and Soil Environments B   Specialized Subjects

  • 2020   Seminar and Experiment for Water and Soil Environments A   Specialized Subjects

  • 2020   Earth Science II   Specialized Subjects

  • 2020   Earth Science I   Specialized Subjects

  • 2020   Seminar in Environmental Science   Specialized Subjects

  • 2020   Chemistry of Earth Science   Specialized Subjects

  • 2020   Seminar and experiment of EcologicalEnvironment Ⅱ   Specialized Subjects

  • 2020   Seminar and experiment of EcologicalEnvironment Ⅰ   Specialized Subjects

  • 2019   Graduation Research   Specialized Subjects

  • 2019   Seminar and Experiment for Ecological Environment   Specialized Subjects

  • 2019   Seminar and Experiment for Ecological Environment   Specialized Subjects

  • 2019   Seminar and Experiment for Water and Soil Environments   Specialized Subjects

  • 2019   Seminar and Experiment for Water and Soil Environments   Specialized Subjects

  • 2019   Landscape Ecology   Specialized Subjects

  • 2019   Seminar in Environmental Science   Specialized Subjects

  • 2019   Chemistry of Earth Science   Specialized Subjects

  • 2019   Introduction to Majors 1   Specialized Subjects

  • 2019   Introduction to Majors 1   Specialized Subjects

  • 2019   Introductory Seminar in Systems Engineering   Specialized Subjects

  • 2019   Earth Science   Specialized Subjects

  • 2019   NA   Specialized Subjects

  • 2019   Graduation Research   Specialized Subjects

  • 2019   Chemistry of Earth Science   Specialized Subjects

  • 2019   Earth Science   Specialized Subjects

  • 2019   Seminar and Experiment for Ecological Environment   Specialized Subjects

  • 2019   Seminar and Experiment for Ecological Environment   Specialized Subjects

  • 2019   Seminar and Experiment for Water and Soil Environments   Specialized Subjects

  • 2019   Seminar and Experiment for Water and Soil Environments   Specialized Subjects

  • 2019   Seminar in Environmental Science   Specialized Subjects

  • 2019   Introduction to Majors 1   Specialized Subjects

  • 2019   Introductory Seminar in Systems Engineering   Specialized Subjects

  • 2018   NA   Specialized Subjects

  • 2018   Chemistry of Earth Science   Specialized Subjects

  • 2018   Introduction to Majors 1   Specialized Subjects

  • 2018   Earth Science   Specialized Subjects

  • 2018   Seminar and Experiment for Ecological Environment   Specialized Subjects

  • 2018   Seminar and Experiment for Ecological Environment   Specialized Subjects

  • 2018   Seminar and Experiment for Water and Soil Environments   Specialized Subjects

  • 2018   Seminar and Experiment for Water and Soil Environments   Specialized Subjects

  • 2018   Seminar in Environmental Science   Specialized Subjects

  • 2018   Introduction to Majors 1   Specialized Subjects

  • 2018   Graduation Research   Specialized Subjects

  • 2018   Introduction to Majors 1   Specialized Subjects

  • 2018   Introduction to Majors 1   Specialized Subjects

  • 2018   Seminar and Experiment for Water and Soil Environments   Specialized Subjects

  • 2018   Seminar and Experiment for Water and Soil Environments   Specialized Subjects

  • 2018   Seminar and Experiment for Ecological Environment   Specialized Subjects

  • 2018   Seminar and Experiment for Ecological Environment   Specialized Subjects

  • 2018   Earth Science   Specialized Subjects

  • 2017   Graduation Research   Specialized Subjects

  • 2017   NA   Specialized Subjects

  • 2017   Seminar and Experiment for Ecological Environment   Specialized Subjects

  • 2017   Seminar and Experiment for Ecological Environment   Specialized Subjects

  • 2017   Seminar and Experiment for Water and Soil Environments   Specialized Subjects

  • 2017   Seminar and Experiment for Water and Soil Environments   Specialized Subjects

  • 2017   Chemistry of Earth Science   Specialized Subjects

  • 2017   Introduction to Majors 1   Specialized Subjects

  • 2017   Introduction to Majors 1   Specialized Subjects

  • 2017   Introductory Seminar in Systems Engineering   Specialized Subjects

  • 2017   Seminar in Environmental Design Ⅱ   Specialized Subjects

  • 2017   Seminar in Environmental ModelingⅡ   Specialized Subjects

  • 2017   Seminar in Environmental TechnologyⅡ   Specialized Subjects

  • 2017   Earth Science   Specialized Subjects

  • 2017   Exercise in Environmental DesignⅠ   Specialized Subjects

  • 2017   Seminar in Environmental ModelingⅠ   Specialized Subjects

  • 2017   Seminar in Environmental Technology Ⅰ   Specialized Subjects

  • 2017   Introductory Seminar in Systems Engineering   Specialized Subjects

  • 2017   Introduction to Majors 1   Specialized Subjects

  • 2017   Introduction to Majors 1   Specialized Subjects

  • 2017   Seminar and Experiment for Water and Soil Environments   Specialized Subjects

  • 2017   Seminar and Experiment for Water and Soil Environments   Specialized Subjects

  • 2017   Earth Science   Specialized Subjects

  • 2016   Graduation Research   Specialized Subjects

  • 2016   Earth Science   Specialized Subjects

  • 2016   Seminar in Environmental Design Ⅱ   Specialized Subjects

  • 2016   Seminar in Environmental ModelingⅡ   Specialized Subjects

  • 2016   Seminar in Environmental TechnologyⅡ   Specialized Subjects

  • 2016   Exercise in Environmental DesignⅠ   Specialized Subjects

  • 2016   Seminar in Environmental ModelingⅠ   Specialized Subjects

  • 2016   Seminar in Environmental Technology Ⅰ   Specialized Subjects

  • 2016   Seminar in Environmental Information Processing   Specialized Subjects

  • 2016   Seminar and Experiment for Ecological Environment   Specialized Subjects

  • 2016   Seminar and Experiment for Ecological Environment   Specialized Subjects

  • 2016   Introduction to Majors 1   Specialized Subjects

  • 2016   Introduction to Majors 1   Specialized Subjects

  • 2016   Voluntary Study on Systems Engineering Ⅴ   Specialized Subjects

  • 2016   Voluntary Study on Systems Engineering Ⅲ   Specialized Subjects

  • 2016   Seminar and Experiment for Water and Soil Environments   Specialized Subjects

  • 2016   Seminar and Experiment for Water and Soil Environments   Specialized Subjects

  • 2016   Chemistry of Earth Science   Specialized Subjects

  • 2016   Introductory Seminar in Systems Engineering   Specialized Subjects

  • 2016   Earth Science   Specialized Subjects

  • 2016   Seminar in Environmental Technology Ⅰ   Specialized Subjects

  • 2016   Seminar in Environmental TechnologyⅡ   Specialized Subjects

  • 2016   Voluntary Study on Systems Engineering Ⅲ   Specialized Subjects

  • 2016   Voluntary Study on Systems Engineering Ⅳ   Specialized Subjects

  • 2016   NA   Specialized Subjects

  • 2016   Chemistry of Earth Science   Specialized Subjects

  • 2016   Introduction to Majors 1   Specialized Subjects

  • 2016   Seminar and Experiment for Ecological Environment   Specialized Subjects

  • 2016   Seminar and Experiment for Ecological Environment   Specialized Subjects

  • 2016   Seminar and Experiment for Water and Soil Environments   Specialized Subjects

  • 2016   Seminar and Experiment for Water and Soil Environments   Specialized Subjects

  • 2015   Graduation Research   Specialized Subjects

  • 2015   NA   Specialized Subjects

  • 2015   Earth Science   Specialized Subjects

  • 2015   Seminar and Experiment for Ecological Environment   Specialized Subjects

  • 2015   Seminar and Experiment for Ecological Environment   Specialized Subjects

  • 2015   Seminar and Experiment for Water and Soil Environments   Specialized Subjects

  • 2015   Seminar and Experiment for Water and Soil Environments   Specialized Subjects

  • 2015   Seminar in Environmental ModelingⅡ   Specialized Subjects

  • 2015   Seminar in Environmental Design Ⅱ   Specialized Subjects

  • 2015   Seminar in Environmental TechnologyⅡ   Specialized Subjects

  • 2015   Introduction to Majors 1   Specialized Subjects

  • 2015   Introduction to Majors 1   Specialized Subjects

  • 2015   Voluntary Study on Systems Engineering Ⅲ   Specialized Subjects

  • 2015   Basic Science 2   Specialized Subjects

  • 2015   Seminar in Environmental ModelingⅠ   Specialized Subjects

  • 2015   Exercise in Environmental DesignⅠ   Specialized Subjects

  • 2015   Seminar in Environmental Technology Ⅰ   Specialized Subjects

  • 2015   Voluntary Study on Systems Engineering Ⅳ   Specialized Subjects

  • 2015   Seminar and Experiment for Ecological Environment   Specialized Subjects

  • 2015   Seminar and Experiment for Ecological Environment   Specialized Subjects

  • 2015   Seminar and Experiment for Water and Soil Environments   Specialized Subjects

  • 2015   Seminar and Experiment for Water and Soil Environments   Specialized Subjects

  • 2015   Earth Science   Specialized Subjects

  • 2014   Voluntary Study on Systems Engineering Ⅰ   Specialized Subjects

  • 2014   Introduction to Environmental Systems Ⅱ   Specialized Subjects

  • 2014   Seminar in Environmental Design Ⅱ   Specialized Subjects

  • 2014   Seminar in Environmental ModelingⅡ   Specialized Subjects

  • 2014   Seminar in Environmental TechnologyⅡ   Specialized Subjects

  • 2014   Exercise in Environmental DesignⅠ   Specialized Subjects

  • 2014   Seminar in Environmental ModelingⅠ   Specialized Subjects

  • 2014   Seminar in Environmental Technology Ⅰ   Specialized Subjects

  • 2014   Seminar and Experiment for Ecological Environment   Specialized Subjects

  • 2014   Seminar and Experiment for Ecological Environment   Specialized Subjects

  • 2014   Seminar and Experiment for Water and Soil Environments   Specialized Subjects

  • 2014   Seminar and Experiment for Water and Soil Environments   Specialized Subjects

  • 2014   Basic Science 2   Specialized Subjects

  • 2014   Earth Science   Specialized Subjects

  • 2014   Introductory Seminar   Liberal Arts and Sciences Subjects

  • 2014   Introduction to Environmental Systems Ⅱ   Specialized Subjects

  • 2014   Seminar in Environmental Design Ⅱ   Specialized Subjects

  • 2014   Graduation Research   Specialized Subjects

  • 2014   Seminar in Environmental TechnologyⅡ   Specialized Subjects

  • 2014   Seminar and Experiment for Ecological Environment   Specialized Subjects

  • 2014   Seminar and Experiment for Ecological Environment   Specialized Subjects

  • 2014   Seminar and Experiment for Water and Soil Environments   Specialized Subjects

  • 2014   Seminar and Experiment for Water and Soil Environments   Specialized Subjects

  • 2014   Earth Science   Specialized Subjects

  • 2013   Introduction to Environmental Systems Ⅱ   Specialized Subjects

  • 2013   Seminar in Environmental Design Ⅱ   Specialized Subjects

  • 2013   Seminar in Environmental ModelingⅡ   Specialized Subjects

  • 2013   Seminar in Environmental TechnologyⅡ   Specialized Subjects

  • 2013   Exercise in Environmental DesignⅠ   Specialized Subjects

  • 2013   Seminar in Environmental ModelingⅠ   Specialized Subjects

  • 2013   Seminar in Environmental Technology Ⅰ   Specialized Subjects

  • 2013   Seminar and Experiment for Ecological Environment   Specialized Subjects

  • 2013   Seminar and Experiment for Ecological Environment   Specialized Subjects

  • 2013   Seminar and Experiment for Water and Soil Environments   Specialized Subjects

  • 2013   Seminar and Experiment for Water and Soil Environments   Specialized Subjects

  • 2013   Basic Science 2   Specialized Subjects

  • 2013   Earth Science   Specialized Subjects

  • 2013   Seminar and Experiment for Ecological Environment   Specialized Subjects

  • 2013   Seminar and Experiment for Ecological Environment   Specialized Subjects

  • 2013   Seminar and Experiment for Water and Soil Environments   Specialized Subjects

  • 2013   Seminar and Experiment for Water and Soil Environments   Specialized Subjects

  • 2013   Earth Science   Specialized Subjects

  • 2013   Graduation Research   Specialized Subjects

  • 2012   Graduation Research   Specialized Subjects

  • 2012   Earth Science   Specialized Subjects

  • 2012   Seminar and Experiment for Ecological Environment   Specialized Subjects

  • 2012   Seminar and Experiment for Ecological Environment   Specialized Subjects

  • 2012   Seminar and Experiment for Water and Soil Environments   Specialized Subjects

  • 2012   Seminar and Experiment for Water and Soil Environments   Specialized Subjects

  • 2012   Introductory Seminar   Liberal Arts and Sciences Subjects

  • 2012   Seminar in Environmental ModelingⅡ   Specialized Subjects

  • 2012   Seminar in Environmental Design Ⅱ   Specialized Subjects

  • 2012   Seminar in Environmental TechnologyⅡ   Specialized Subjects

  • 2012   Basic Science 2   Specialized Subjects

  • 2012   Seminar in Environmental ModelingⅠ   Specialized Subjects

  • 2012   Exercise in Environmental DesignⅠ   Specialized Subjects

  • 2012   Seminar in Environmental Technology Ⅰ   Specialized Subjects

  • 2012   Introduction to Environmental Systems Ⅱ   Specialized Subjects

  • 2012   Seminar in Environmental Technology Ⅰ   Specialized Subjects

  • 2012   Earth Science   Specialized Subjects

  • 2012   Seminar and Experiment for Ecological Environment   Specialized Subjects

  • 2012   Seminar and Experiment for Ecological Environment   Specialized Subjects

  • 2012   Introduction to Environmental Systems Ⅱ   Specialized Subjects

  • 2012   Basic Science 2   Specialized Subjects

  • 2012   Seminar and Experiment for Water and Soil Environments   Specialized Subjects

  • 2012   Seminar and Experiment for Water and Soil Environments   Specialized Subjects

  • 2012   Seminar in Environmental TechnologyⅡ   Specialized Subjects

  • 2011   Basic Science 2   Specialized Subjects

  • 2011   Seminar and Experiment for Ecological Environment   Specialized Subjects

  • 2011   Seminar and Experiment for Ecological Environment   Specialized Subjects

  • 2011   Seminar and Experiment for Water and Soil Environments   Specialized Subjects

  • 2011   Seminar and Experiment for Water and Soil Environments   Specialized Subjects

  • 2011   Seminar in Environmental TechnologyⅡ   Specialized Subjects

  • 2011   Seminar in Environmental Technology Ⅰ   Specialized Subjects

  • 2011   Introduction to Environmental Systems Ⅱ   Specialized Subjects

  • 2011   Earth Science   Specialized Subjects

  • 2011   NA   Specialized Subjects

  • 2011   NA   Specialized Subjects

  • 2011   Graduation Research   Specialized Subjects

  • 2010   Introductory Seminar   Liberal Arts and Sciences Subjects

  • 2010   Introduction to Environmental Systems Ⅱ   Specialized Subjects

  • 2010   Graduation Research   Specialized Subjects

  • 2010   Earth Science   Specialized Subjects

  • 2010   NA   Specialized Subjects

  • 2010   NA   Specialized Subjects

  • 2010   NA   Specialized Subjects

  • 2010   NA   Specialized Subjects

  • 2010   NA   Specialized Subjects

  • 2010   NA   Specialized Subjects

  • 2009   NA   Specialized Subjects

  • 2009   NA   Specialized Subjects

  • 2009   NA   Specialized Subjects

  • 2009   NA   Specialized Subjects

  • 2009   Earth Science   Specialized Subjects

  • 2009   NA   Specialized Subjects

  • 2009   Graduation Research   Specialized Subjects

  • 2009   NA   Specialized Subjects

  • 2009   NA   Specialized Subjects

  • 2008   Group seminar for graduation works   Specialized Subjects

  • 2008   NA   Specialized Subjects

  • 2008   NA   Specialized Subjects

  • 2008   NA   Specialized Subjects

  • 2008   NA   Specialized Subjects

  • 2008   NA   Specialized Subjects

  • 2008   Earth Science   Specialized Subjects

  • 2008   NA   Specialized Subjects

  • 2008   Graduation Research   Specialized Subjects

  • 2007   Group seminar for graduation works   Specialized Subjects

  • 2007   NA   Specialized Subjects

  • 2007   NA   Specialized Subjects

  • 2007   NA   Specialized Subjects

  • 2007   NA   Specialized Subjects

  • 2007   Earth Science   Specialized Subjects

  • 2007   NA   Specialized Subjects

  • 2007   Graduation Research   Specialized Subjects

  • 2006   Graduation Research   Specialized Subjects

  • 2006   Earth Science   Specialized Subjects

  • 2006   NA   Specialized Subjects

  • 2006   NA   Specialized Subjects

  • 2006   NA   Specialized Subjects

  • 2006   NA   Specialized Subjects

  • 2006   NA   Specialized Subjects

  • 2006   Group seminar for graduation works   Specialized Subjects

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Independent study

  • 2016   海藻を用いた鉱山での金属汚染指標

Classes

  • 2022   Systems Engineering Global Seminar Ⅱ   Doctoral Course

  • 2022   Systems Engineering Global Seminar Ⅰ   Doctoral Course

  • 2022   Systems Engineering Advanced Research   Doctoral Course

  • 2022   Systems Engineering Advanced Seminar Ⅱ   Doctoral Course

  • 2022   Systems Engineering Advanced Seminar Ⅰ   Doctoral Course

  • 2022   Systems Engineering Project SeminarⅡB   Master's Course

  • 2022   Systems Engineering Project SeminarⅡA   Master's Course

  • 2022   Systems Engineering Project SeminarⅠB   Master's Course

  • 2022   Systems Engineering Project SeminarⅠA   Master's Course

  • 2022   Land Water Environment Engineering   Master's Course

  • 2022   Systems Engineering SeminarⅡB   Master's Course

  • 2022   Systems Engineering SeminarⅡA   Master's Course

  • 2022   Systems Engineering SeminarⅠB   Master's Course

  • 2022   Systems Engineering SeminarⅠA   Master's Course

  • 2021   Systems Engineering SeminarⅠA   Master's Course

  • 2021   Systems Engineering SeminarⅠB   Master's Course

  • 2021   Systems Engineering SeminarⅡA   Master's Course

  • 2021   Systems Engineering SeminarⅡB   Master's Course

  • 2021   Land Water Environment Engineering   Master's Course

  • 2021   Systems Engineering Project SeminarⅠA   Master's Course

  • 2021   Systems Engineering Project SeminarⅠB   Master's Course

  • 2021   Systems Engineering Project SeminarⅡA   Master's Course

  • 2021   Systems Engineering Project SeminarⅡB   Master's Course

  • 2021   Systems Engineering Advanced Seminar Ⅰ   Doctoral Course

  • 2021   Systems Engineering Advanced Seminar Ⅱ   Doctoral Course

  • 2021   Systems Engineering Advanced Research   Doctoral Course

  • 2021   Systems Engineering Global Seminar Ⅰ   Doctoral Course

  • 2021   Systems Engineering Global Seminar Ⅱ   Doctoral Course

  • 2020   Systems Engineering Advanced Seminar Ⅱ   Doctoral Course

  • 2020   Systems Engineering SeminarⅡA   Master's Course

  • 2020   Systems Engineering SeminarⅠB   Master's Course

  • 2020   Systems Engineering SeminarⅠA   Master's Course

  • 2020   Systems Engineering Global Seminar Ⅰ   Doctoral Course

  • 2020   Systems Engineering Global Seminar Ⅰ   Doctoral Course

  • 2020   Systems Engineering Advanced Seminar Ⅰ   Doctoral Course

  • 2020   Systems Engineering Advanced Research   Doctoral Course

  • 2020   Systems Engineering Advanced Seminar Ⅰ   Doctoral Course

  • 2020   Systems Engineering Advanced Research   Doctoral Course

  • 2020   Systems Engineering SeminarⅡB   Master's Course

  • 2020   Land Water Environment Engineering  

  • 2020   Land Water Environment Engineering  

  • 2020   Systems Engineering Global Seminar Ⅱ   Doctoral Course

  • 2020   Systems Engineering Global Seminar Ⅰ   Doctoral Course

  • 2020   Systems Engineering Advanced Research   Doctoral Course

  • 2020   Systems Engineering Advanced Seminar Ⅱ   Doctoral Course

  • 2020   Systems Engineering Advanced Seminar Ⅰ   Doctoral Course

  • 2020   Systems Engineering Project SeminarⅡB   Master's Course

  • 2020   Systems Engineering Project SeminarⅡA   Master's Course

  • 2020   Systems Engineering Project SeminarⅠB   Master's Course

  • 2020   Systems Engineering Project SeminarⅠA   Master's Course

  • 2020   Land Water Environment Engineering   Master's Course

  • 2020   Systems Engineering SeminarⅡB   Master's Course

  • 2020   Systems Engineering SeminarⅡA   Master's Course

  • 2020   Systems Engineering SeminarⅠB   Master's Course

  • 2020   Systems Engineering SeminarⅠA   Master's Course

  • 2019   Land Water Environment Engineering  

  • 2019   Land Water Environment Engineering  

  • 2019   Land Water Environment Engineering   Master's Course

  • 2019   Land Water Environment Engineering   Master's Course

  • 2019   Systems Engineering Advanced Seminar Ⅰ   Doctoral Course

  • 2019   Systems Engineering Advanced Seminar Ⅰ   Doctoral Course

  • 2019   Systems Engineering Advanced Research   Doctoral Course

  • 2019   Systems Engineering Advanced Research   Doctoral Course

  • 2019   Systems Engineering SeminarⅡB   Master's Course

  • 2019   Systems Engineering SeminarⅡA   Master's Course

  • 2019   Systems Engineering SeminarⅠB   Master's Course

  • 2019   Systems Engineering SeminarⅠA   Master's Course

  • 2019   Systems Engineering Global Seminar Ⅰ   Doctoral Course

  • 2019   Systems Engineering Global Seminar Ⅰ   Doctoral Course

  • 2019   Systems Engineering Project SeminarⅡB   Master's Course

  • 2019   Systems Engineering Project SeminarⅡA   Master's Course

  • 2019   Systems Engineering Project SeminarⅠB   Master's Course

  • 2019   Systems Engineering Project SeminarⅠA   Master's Course

  • 2019   Systems Engineering Global Seminar Ⅱ   Doctoral Course

  • 2019   Systems Engineering Project SeminarⅠA   Master's Course

  • 2019   Systems Engineering Project SeminarⅠA   Master's Course

  • 2019   Systems Engineering Advanced Seminar Ⅱ   Doctoral Course

  • 2019   Systems Engineering Project SeminarⅠA   Master's Course

  • 2019   Systems Engineering SeminarⅡB   Master's Course

  • 2019   Systems Engineering SeminarⅡA   Master's Course

  • 2019   Systems Engineering SeminarⅠB   Master's Course

  • 2019   Systems Engineering Global Seminar Ⅱ   Doctoral Course

  • 2019   Systems Engineering Global Seminar Ⅱ   Doctoral Course

  • 2019   Systems Engineering Advanced Research   Doctoral Course

  • 2019   Systems Engineering Advanced Seminar Ⅱ   Doctoral Course

  • 2019   Systems Engineering Project SeminarⅡB   Master's Course

  • 2019   Systems Engineering SeminarⅠA   Master's Course

  • 2019   Land Water Environment Engineering  

  • 2019   Land Water Environment Engineering  

  • 2018   Systems Engineering Global Seminar Ⅱ   Doctoral Course

  • 2018   Systems Engineering Global Seminar Ⅱ   Doctoral Course

  • 2018   Systems Engineering Advanced Research   Doctoral Course

  • 2018   Systems Engineering Advanced Seminar Ⅱ   Doctoral Course

  • 2018   Systems Engineering Project SeminarⅡB   Master's Course

  • 2018   Systems Engineering Project SeminarⅡA   Master's Course

  • 2018   Systems Engineering Project SeminarⅠB   Master's Course

  • 2018   Systems Engineering Project SeminarⅠA   Master's Course

  • 2018   Systems Engineering SeminarⅡB   Master's Course

  • 2018   Systems Engineering SeminarⅡA   Master's Course

  • 2018   Systems Engineering SeminarⅠB   Master's Course

  • 2018   Systems Engineering SeminarⅠA   Master's Course

  • 2018   Land Water Environment Engineering  

  • 2018   Land Water Environment Engineering  

  • 2017   Systems Engineering Global Seminar Ⅰ   Doctoral Course

  • 2017   Systems Engineering Global Seminar Ⅰ   Doctoral Course

  • 2017   Systems Engineering Global Seminar Ⅱ   Doctoral Course

  • 2017   Systems Engineering Advanced Research   Doctoral Course

  • 2017   Systems Engineering Advanced Research   Doctoral Course

  • 2017   Systems Engineering Advanced Seminar Ⅱ   Doctoral Course

  • 2017   Systems Engineering Advanced Seminar Ⅰ   Doctoral Course

  • 2017   Systems Engineering Advanced Seminar Ⅰ   Doctoral Course

  • 2017   Systems Engineering Project SeminarⅡB   Master's Course

  • 2017   Systems Engineering Project SeminarⅡA   Master's Course

  • 2017   Systems Engineering Project SeminarⅠB   Master's Course

  • 2017   Systems Engineering Project SeminarⅠA   Master's Course

  • 2017   Land Water Environment Engineering   Master's Course

  • 2017   Land Water Environment Engineering   Master's Course

  • 2017   Systems Engineering SeminarⅡB   Master's Course

  • 2017   Systems Engineering SeminarⅡA   Master's Course

  • 2017   Systems Engineering SeminarⅠB   Master's Course

  • 2017   Systems Engineering SeminarⅠA   Master's Course

  • 2017   Systems Engineering Global Seminar Ⅱ   Doctoral Course

  • 2017   Systems Engineering Global Seminar Ⅰ   Doctoral Course

  • 2017   Systems Engineering Project SeminarⅠA   Master's Course

  • 2017   Systems Engineering Advanced Seminar Ⅰ   Doctoral Course

  • 2017   Systems Engineering SeminarⅡB   Master's Course

  • 2017   Systems Engineering Project SeminarⅡA   Master's Course

  • 2017   Systems Engineering Global Seminar Ⅱ   Doctoral Course

  • 2017   Systems Engineering Global Seminar Ⅰ   Doctoral Course

  • 2017   Systems Engineering Project SeminarⅠB   Master's Course

  • 2017   Systems Engineering Advanced Seminar Ⅱ  

  • 2017   Systems Engineering Project SeminarⅡB   Master's Course

  • 2017   Land Water Environment Engineering  

  • 2017   Land Water Environment Engineering  

  • 2016   Systems Engineering Global Seminar Ⅰ   Doctoral Course

  • 2016   Systems Engineering Global Seminar Ⅰ   Doctoral Course

  • 2016   Systems Engineering Advanced Research   Doctoral Course

  • 2016   Systems Engineering Advanced Research   Doctoral Course

  • 2016   Systems Engineering Advanced Seminar Ⅰ   Doctoral Course

  • 2016   Systems Engineering Advanced Seminar Ⅰ   Doctoral Course

  • 2016   Systems Engineering Project SeminarⅡB   Master's Course

  • 2016   Systems Engineering Project SeminarⅡA   Master's Course

  • 2016   Systems Engineering Project SeminarⅠB   Master's Course

  • 2016   Systems Engineering Project SeminarⅠA   Master's Course

  • 2016   Land Water Environment Engineering   Master's Course

  • 2016   Land Water Environment Engineering   Master's Course

  • 2016   Systems Engineering SeminarⅡB   Master's Course

  • 2016   Systems Engineering SeminarⅡA   Master's Course

  • 2016   Systems Engineering SeminarⅠB   Master's Course

  • 2016   Systems Engineering SeminarⅠA   Master's Course

  • 2016   Systems Engineering Advanced Seminar Ⅱ  

  • 2016   Systems Engineering Project SeminarⅡB  

  • 2016   Systems Engineering SeminarⅠB  

  • 2016   Systems Engineering Project SeminarⅠB  

  • 2016   Systems Engineering Advanced Research  

  • 2016   Systems Engineering SeminarⅡA  

  • 2016   Systems Engineering SeminarⅠA  

  • 2016   Systems Engineering Project SeminarⅡA  

  • 2016   Systems Engineering Project SeminarⅠA  

  • 2016   Systems Engineering Advanced Seminar Ⅱ  

  • 2016   Land Water Environment Engineering  

  • 2016   Land Water Environment Engineering  

  • 2015   Land Water Environment Engineering  

  • 2015   Land Water Environment Engineering  

  • 2015   Systems Engineering Advanced Seminar Ⅱ  

  • 2015   Systems Engineering Advanced Research  

  • 2015   Systems Engineering SeminarⅡA  

  • 2015   Systems Engineering SeminarⅠA  

  • 2015   Systems Engineering Project SeminarⅡA  

  • 2015   Systems Engineering Project SeminarⅠA  

  • 2015   Systems Engineering SeminarⅡB  

  • 2015   Systems Engineering SeminarⅠB  

  • 2015   Systems Engineering Project SeminarⅡB  

  • 2015   Systems Engineering Project SeminarⅠB  

  • 2015   Systems Engineering Advanced Research  

  • 2015   Systems Engineering Advanced Seminar Ⅱ  

  • 2015   Systems Engineering Advanced Seminar Ⅱ  

  • 2015   Systems Engineering Advanced Seminar Ⅱ  

  • 2015   Land Water Environment Engineering  

  • 2015   Land Water Environment Engineering  

  • 2014   Systems Engineering Advanced Research  

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  • 2012   Land Water Environment Engineering  

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  • 2011   Kii Peninsula Study Ⅰ  

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  • 2011   Land Water Environment Engineering  

  • 2010   NA   Master's Course

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  • 2007   Land Water Environment Engineering   Master's Course

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Satellite Courses

  • 2017   Kii Peninsula Study Ⅰ  

  • 2017   The disaster and environment in Kii Peninsula  

  • 2011   Kii Peninsula Study Ⅰ  

  • 2008   NA  

  • 2007   NA  

Research Interests

  • 水文学

  • 地球化学

  • 環境地質学

  • Hydrology

  • Geochemistry

  • Environmental Geology

▼display all

Published Papers

  • EFFECTIVENESS OF BRYOPHYTES AND CICADA SHELLS AS A BIO-INDEX FOR HEAVY METAL CONTAMINATION OF RIVER WATER AND SOIL

    Hiroyuki Ii

    INTERNATIONAL JOURNAL OF GEOMATE ( GEOMATE INT SOC )  24 ( 105 ) 117 - 125   2023.05  [Refereed]  [Invited]

     View Summary

    Metal concentrations of sampled bryophytes varied widely and increased depending on the metal contamination conditions. The highest values in bryophytes were several 10,000 ppm for Cu and Zn, 100,000 ppm for Pb, several 1,000 for As and a few 100 ppm for W. Bryophytes are therefore considered to be an effective index of Cu, Zn, Pb, As, and W contaminations. However, the heavy metal concentration in bryophytes at a W mine was low and the heavy metal concentration in other plants showed a higher concentration than that of bryophytes. The presence of W is thought to be the cause of the decrease in the heavy metal concentrations in bryophytes. The other possibility is that only bryophytes with a low copper concentration can grow. The highest Zn concentrations in a cruciferous species reached several 10,000 ppm among sampled plants. The Cu and Zn concentrations in both cicada shells and adult cicadas were not always high at metal mines. Therefore, Cu and Zn concentrations of cicada shells were not effective as a Cu and Zn contamination index. Pb and As concentrations in cicada shells at Pb and As mines were higher than those for non-Pb and non-As contaminated areas and were higher than those in cicada adults. Therefore, cicadas were thought to release Pb and As into their shells during molting and maintain high concentrations of Pb and As in their cicada shells. Pb and As concentrations in cicada shells were thought to be an effective contamination index.

    DOI

  • Drought stress alters iron accumulation in Sorghum bicolor seeds (vol 204, 105093, 2022)

    Ryoichi Araki, Yuka Takano, Hidetoshi Miyazaki, Hiroyuki Ii, Ping An

    ENVIRONMENTAL AND EXPERIMENTAL BOTANY ( PERGAMON-ELSEVIER SCIENCE LTD )  208   2023.04

    DOI

  • Cu, Zn, Fe AND Mn CONCENTRATIONS OF SOME GASROPODS IN THE WAKAGAWA ESTUARY TIDAL FLAT

    Kazuko Kubol, Hiroyuki Ii

    INTERNATIONAL JOURNAL OF GEOMATE ( GEOMATE INT SOC )  24 ( 104 ) 69 - 76   2023.04  [Refereed]

     View Summary

    The Wakagawa estuary tidal flat was heavily polluted by industrial wastewaterin the past.Since then, organic pollution has decreased due to inflow regulations, etc., and it is now an important wetland with rich biota. However, it is expected that metallic elements remain in the tidal flat and affect benthic organisms.Therefore, somebenthic animals, mainly sediment feeders, which areexpected to be strongly affected by the sediment,were collectedin 2016.Then the concentrations of some metallic elements in their bodies were measured.In this paper, copper, zinc, iron, and manganese concentrations inthe soft bodies of six benthic gastropod species are reported. It was suggested that soil zinc concentration was not uniform and some areas were highin this tidal flat,especially in places where water flow is obstructed topographically and mud tends to accumulate. Some degree of partial accumulation in the sediment within this tidal flat was suggested for copper, iron and manganese.Exclusive or partial detritus feeders showed higher metal concentrations than microalgae feeders. Among gastropods,three species of genus Batillaria(B. attramentaria,B.multiformisand B. zonalis) for copper; Batillaria multiformis, B. zonalisand Pirenella nipponicafor zinc; Batillaria zonalisand Pirenella nipponicafor iron and manganese, are considered useful as an indicator species

    DOI

  • Drought stress alters iron accumulation in Sorghum bicolor seeds

    Ryoichi Araki, Yuka Takano, Hidetoshi Miyazaki, Hiroyuki Ii, Ping An

    ENVIRONMENTAL AND EXPERIMENTAL BOTANY ( PERGAMON-ELSEVIER SCIENCE LTD )  204   2022.12

     View Summary

    Sorghum (Sorghum bicolor L.) is a cultivated food crop with iron-rich seeds that thrives in semi-arid areas. Although the mechanism of iron transport has been investigated in detail at the molecular level, the effects of drought stress on its regulation remain unclear. We cultivated sorghum in a chamber without (control) and with drought stress to determine iron accumulation in seeds. The drought stress treatment significantly increased the iron content by approximately 2-fold in seeds and decreased it by 0.6-fold in leaves. The results of RNA -sequencing leaves indicated that drought stress impaired the expression of genes involved in photosynthesis. This agreed with the finding that drought stress significantly reduced plant biomass. The expression of genes encoding vacuole iron transporter and ferritin were increased under drought stress. These expression profiles were confirmed by quantitative polymerase chain reaction, which indicated that expression of genes encoding the vacuole iron transporter and ferritin was significantly increased in leaves and seeds under drought stress. Furthermore, photosynthesis impaired by drought stress might trigger a disturbance in iron homeostasis. Therefore, increased vacuolar transporters and ferritin transcription might be important for safely storing excess iron. Our data suggested that maintaining iron homeostasis via vacuole iron transporters and ferritin enhances iron accumulation in seeds under drought stress.

    DOI

  • ASSESSING BENTHIC ANIMAL AND WATER PLANT USE IN ESTIMATING RIVER AL AND CR CONTAMINATION IN THE KINOKAWA RIVER CATCHMENT

    Takuma Kubohara, Hiroyuki Ii

    International Journal of GEOMATE   22 ( 94 ) 59 - 65   2022.06  [Refereed]

    DOI

  • Modeling of the groundwater flow system in excavated areas of an abandoned mine

    Shingo Tomiyama, Toshifumi Igarashi, Carlito Baltazar Tabelin, Pawit Tangviroon, Hiroyuki Ii (Part: Corresponding author )

    Journal of Contaminant Hydrology ( ELSEVIER )  230   103617 - 103617   2020.03  [Refereed]

     View Summary

    This study evaluated the assumption that back-filled excavated areas of old mine workings can be modeled as porous media, where groundwater flow is governed by Darcy's law. The Yatani mine, located in Yamagata Prefecture, Japan, was selected for this study because several mining methods were used during its operation and detailed drawings of the excavated areas of the mine are available. The model was calibrated using combinations of hydraulic conductivities (k), with the best-matched case being selected by comparing calculated and measured AMD fluxes. Modeled AMD fluxes along the drainage tunnel (−2 L level) were consistent with measured data when the excavated areas were considered to be porous media with a specific hydraulic conductivity, and the presence of faults and permeability were taken into account. The model also successfully predicted the increasing trend of AMD flux from the shaft to adit mouth. In the numerical model, the back-filled excavated areas were assumed to behave as porous media, which was shown to be a valid assumption in this mine. The model demonstrated that back-filling the excavated areas and drainage tunnel with low permeability materials could reduce the flux of Zn in AMD by up to 61%.

    DOI

  • ZN AND FE CONTAMINATION INDEX FOR RIVER USING RIVER INSECTS AND WATER PLANTS IN THE KINOKAWA RIVER CATCHMENT

    Takuma Kubohara, Hiroyuki Ii (Part: Corresponding author )

    International Journal of GEOMATE ( GEOMATE INT SOC )  19 ( 75 ) 76 - 83   2020.01  [Refereed]

     View Summary

    It has not been studied whether river insects and water plants are useful for an index of Zn and Fe contamination in the Kinokawa River catchment. Useful species as an index of Zn and Fe contamination needs a high concentration in a contaminated area, a low concentration in a non-contaminated area and a high and a wide range of their concentrations. Zn and Fe concentrations of crane fly larva around the closed Cu mine were high (88 to 420 and 1,300 to 9,300 mg/kg-dry fo rZn and Fe). Zn and Fe concentrations of bryophyte around the closed Cu mine were high (34 to 8,900 and 110 to 58,000 mg/kg-dry for Zn and Fe). Crane fly larva (81 to 420 and 110 to 9,300 mg/kg-dry for Zn and Fe) in river insects and bryophyte (24 to 8,900 and 110 to 58,000 mg/kg-dry for Zn and Fe) in water plants had high and a wide range of Zn and Fe concentration. Therefore, it was thought that crane fly larva and bryophyte were useful species for an index of Zn and Fe contamination. Zn concentrations of Pottiaceae and Fe concentrations of Brachytheciaceae around the Cu mine area (75 to 8,900 for Pottiaceae and 940 to 58,000 mg/kg-dry for Brachytheciaceae) were high. Pottiaceae (75 to 8,900 mg/kg-dry for Zn) and Brachytheciaceae (220 to 58,000 mg/kg-dry for Fe) had high and a wide range of metal concentration. Therefore, Pottiaceae for Zn and Brachytheciaceae for Fe were useful species for an index of metal contamination.

    DOI

  • Relationship between rain clouds direction, topography and amount of precipitation in between the Osaka Plain and the south Ikoma Mountains, middle of Japan

    Hiroki Nishiwaki, Hiroyuki Ii (Part: Corresponding author )

    International Journal of GEOMATE ( GEOMATE INT SOC )  18 ( 65 ) 34 - 40   2020  [Refereed]

     View Summary

    The area between from the Osaka Plain to the Ikoma Mountains faces sea at only west direction and is surrounded by mountains at the other directions. Then, rain clouds can directly encounter the Ikoma Mountains only from west direction before crossing any mountains. On the other hand, rain clouds cannot encounter the Ikoma Mountains from the other directions before crossing surrounding mountains. Only when rain clouds migrated from west direction, amounts of precipitation in the Ikoma Mountains were observed to be 41 % higher than in the Osaka Plain. The altitude difference between both areas is about 400 m. When rain clouds migrated from the other directions, both amounts of precipitation for the Ikoma Mountains and the Osaka plain were almost the same. Therefore, altitude effect of amounts of precipitation for foot of mountain and top of mountain was observed only when rain clouds directly encountered the mountain before crossing the other mountains.

    DOI

  • Zooplankton species richness and abiotic conditions in Thirlmere Lakes, New South Wales, Australia, with reference to water-level fluctuations

    Tsuyoshi Kobayashi, Martin Krogh, Hiroyuki II, Russell J. Shiel, Hendrik Segers, Joanne Ling, Simon J. Hunter, Timothy Pritchard (Part: Corresponding author )

    Australian Zoologist   41 ( 1 ) 107 - 123   2020  [Refereed]

     View Summary

    Water-level fluctuations can have significant effects on lake biological communities. Thirlmere Lakes are a group of five interconnected lakes located near Sydney. Water levels in Thirlmere Lakes have fluctuated over time, but there has been a recent decline that is of significant concern. In this study, we examined over one year the species composition and richness of zooplankton (Rotifera, Cladocera and Copepoda) and abiotic conditions in Lakes Nerrigorang and Werri Berri, two of the five Thirlmere lakes, with reference to lake water level. We recorded a total of 66 taxa of zooplankton, with the first report of the rotifer Notommata saccigera from Australia, and the first report of the rotifers Keratella javana, Lecane rhytida and Rousseletia corniculata from New South Wales. There was a marked difference in abiotic conditions between the two lakes, with more variable conditions in Lake Nerrigorang. There was a significant positive correlation between zooplankton species richness and lake water level but only for Lake Nerrigorang. Although the two lakes are closely situated and thought to be potentially connected at high water levels, they show distinct ecological characters and the effect of water-level fluctuations on zooplankton species richness seems to differ between the lakes.

    DOI

  • Acid mine drainage sources and hydrogeochemistry at the Yatani mine, Yamagata, Japan: A geochemical and isotopic study

    Shingo Tomiyama, Toshifumi Igarashi, Carlito Baltazar Tabelin, Pawit Tangviroon, Hiroyuki Ii (Part: Corresponding author )

    Journal of Contaminant Hydrology ( ELSEVIER )  225   103502 - 103502   2019.08  [Refereed]

     View Summary

    This paper describes the geochemistry of groundwater and its flow system in the closed Yatani mine in southern Yamagata Prefecture, Japan. The mine is located in a sulfide deposit containing pyrite and has been generating acid mine drainage (AMD). The study was intended to elucidate the formation of AMD and its flow patterns using geological, hydrological, geochemical, and isotopic techniques. The results indicate that AMD is formed by the interaction of groundwater with sulfide minerals, sand slime, and tailings back-filled into excavated mine areas. Groundwater recharge areas were identified on the mountain slope at an elevation of ~900 m. The formation of AMD in the drifts and shaft was more extensive than that in the deeper drainage levels. Principal component analysis was applied to the hydrogeochemical data to identify the causes of AMD formation. The first, second, and third principal components reveal that the increased ion concentrations in mine drainage are a result of water–mineral reactions in excavated mine areas, the contribution of groundwater in deep reductive environments, and isotopic fractionation during precipitation, respectively. A promising method of reducing AMD formation is to prevent contact between dissolved oxygen and sulfide minerals by increasing the drainage level or by filling the shallow underground excavated area with cementitious materials.

    DOI

  • Characteristic of water chemistry for arima type deep thermal water in the Kinokawa River catchment, Kii Peninsula, Japan

    Hiroyuki Ii, Hiroki Kitagawa, Takuma Kubohara, Isao Machida (Part: Lead author )

    International Journal of GEOMATE ( GEOMATE INT SOC )  17 ( 62 ) 158 - 166   2019  [Refereed]

     View Summary

    All soluble substances for coastal shallow well waters were higher than those for the inland well waters in the Kinokawa River catchment along the Median Tectonic Line in Wakayama Prefecture, Japan. Coastal areas were thought to have been contaminated by sewage wastewater due to a high population. Shallow groundwater is thought to have derived from precipitation because all shallow groundwater is on the Global Meteoric Water Line. There are many hot springs in the Kinokawa River catchment along the Median Tectonic Line in Wakayama. Most hot spring waters are thought to originate from mixing of shallow groundwater and Arima type deep thermal water because of their δ O and δD values. High Li concentration water was found for Arima type deep thermal water. In particular, Li concentration of Nohan No.5 borehole, 1100m in depth, in the center of Kinokawa River catchment reached 100 mg/l and this value was the highest in Japan. However, both δ O and δD values for hot spring waters did not always increase with Li and HCO concentrations although both δ O and δD values increased with Na and Cl concentrations. Li concentration for hot springs increased with HCO concentration. Therefore, the Li source was determined not to be different from Na and Cl source. 18 + + 18 + - 18 + - + - + - 3 3

    DOI

  • Cu and Zn concentrations of natural oysters in Osaka Bay, Japan

    Tetsuya Fukano, Hiroyuki Ii (Part: Corresponding author )

    International Journal of GEOMATE ( GEOMATE INT SOC )  15 ( 52 ) 7 - 15   2018  [Refereed]

     View Summary

    Cu and Zn concentrations found in oysters in Osaka Bay were 0.09 to 7.8 % and 1.7 to 37 %. Particularly high Cu concentration was found in oysters at fishing ports as well as a yacht harbor and leisure boat wharf. High Zn concentration oysters were also found at fishing ports, yacht harbor, wharf and near food factories. Anti-fouling paint, found in large quantity at the small fishing port, contained Cu O as a biocide for biofouling and Zn concentrations of anti-fouling paint were also high. This anti-fouling paint was suspected to be the main Cu and Zn contaminant for oysters. Among all oyster parts for natural and cultivated oysters, Cu and Zn concentrations were highest in the oyster gills. Cu and Zn concentrations in the mantle and hepatic gland were almost the same value while adductor muscle values were low. As Cu and Zn concentrations in cultivated oysters were very low, less than 0.1 and 1.1 %, natural oysters are considered as effective for getting Zn and Cu in Osaka Bay. 2

    DOI

  • EVALUATION OF METAL CONTAMINATION FOR RIVER USING BRYOPHYTE IN THE KINOKAWA RIVER CATCHMENT

    Takuma Kubohara, Hiroyuki Ii (Part: Corresponding author )

    INTERNATIONAL JOURNAL OF GEOMATE ( GEOMATE INT SOC )  13 ( 37 ) 108 - 115   2017.09  [Refereed]

     View Summary

    Metal concentration of river water is not always useful for evaluating metal contamination in a catchment because metal concentration of river water is neither always high nor uniform. Therefore, we studied the evaluation of river metal contamination using the metal concentration of bryophyte. Metal concentrations of bryophyte sampled in both the lower stream of the closed Cu mine (120 to 26,000, 25 to 2,400 and 50 to 190 mg/kg-dry for Cu, Co and Ni) and the serpentinite (24 to 59 and 58 to 650 mg/kg-dry for Co and Ni) were higher than background metal concentrations of bryophyte (2 to 96, 2 to 20 and 2 to 43 mg/kg-dry for Cu, Co and Ni). Therefore, it was thought that metal concentrations of bryophyte sampled in the lower stream of the closed Cu mine (Cu, Co and Ni) and the serpentinite (Co and Ni) were affected by the closed Cu mine and the serpentinte, respectively. A kind of hyper accumulator bryophyte similar Scopelophila cataractae was often found around the closed Cu mine and was found around the serpentinite. Its metal concentration was high (1,100 to 26,000, 33 to 2,400 and 81 to 650 mg/kg-dry for Cu, Co and Ni). Metal concentrations of another hyper accumulator bryophyte similar Scopelophila cataractae had high and a wide range of metal concentrations (2 to 5,900, 2 to 150 and 2 to 590 mg/kg-dry for Cu, Co and Ni). Therefore, those of hyper accumulator bryophyte were thought to be useful for a Cu, Co and Ni contamination indicator.

    DOI

  • GEOTHERMAL AND HOT SPRING WATER ORIGIN DETERMINATION USING OXYGEN AND HYDROGEN STABLE ISOTOPE IN THE TOYOHIRAKAWA CATCHMENT, HOKKAIDO, JAPAN

    Hiroyuki Ii, Hiroshi Kanbara, Yohei Kawabata (Part: Lead author, Corresponding author )

    INTERNATIONAL JOURNAL OF GEOMATE ( GEOMATE INT SOC )  13 ( 37 ) 127 - 132   2017.09  [Refereed]

     View Summary

    Jyozankei hot spring located near Sapporo City in Hokkaido is famous for many visitors and hot spring quality in Japan. Ground temperatures of 220 degrees C were reached in the Toyoha Mine10 km west of Jyozankei hot spring where several boreholes less than 2000 m in depth for investigating geothermal water were drilled. Subsequently, a hydrological investigation to clarify the influence of geothermal development on Jyozankei hot Spring was performed. Snow, river, well, spring, hot spring and the geothermal borehole waters in the Toyohirakawa catchment including Jyozankei hot spring were sampled and oxygen and hydrogen stable isotopes of water were analyzed to determine water origin for hot spring and geothermal water. As a result, Jyozankei hot spring and the borehole waters were thought to arise from mixed waters of magmatic and surface waters. Borehole water, from less than 2000 m in depth, was 10 to 30 % of the magmatic water and Jyozankei hot spring water was less than 10 % of the magmatic water. Surface water was recharged at the upstream of the Toyohirakawa catchment, with snow from the upper stream of the northwest catchment being an important resource of surface water for both Jyozankei hot spring water and geothermal water from the boreholes.

    DOI

  • Effectiveness of using river insect larvae as an index of Cu, Zn and as contaminations in rivers, Japan

    Hiroyuki Ii, Akio Nishida (Part: Lead author, Corresponding author )

    International Journal of GEOMATE ( GEOMATE INT SOC )  12 ( 33 ) 153 - 159   2017.05  [Refereed]

     View Summary

    Analysis of Dobsonfly (a kind of Megaloptera, Protohermes grandis) larvae for concentrations of Cu and Zn was found to be an effective method of determining levels of Cu and Zn contamination of rivers in metal mine areas and non-metal mine catchments. Metal concentration in Dobsonfly larvae was used as an index of metal contamination because the amount of metal concentration in Dobsonfly larvae decreased with the dry weight of the larvae and also on the degree of metal present in the river water. Dobsonfly makes an excellent tool for contamination evaluation because of their easy classification, wide distribution and commonness. Furthermore, due to their relatively lengthy 2-3 year lifespan, river contamination assessment over a long term could be performed. In this study, Cu, Zn and As concentrations in river insect larvae in metal mine areas were found to be higher than those in non-mine catchments.

    DOI

  • Tunnel construction impact on groundwater character over 25 years of observation at matsumoto tunnel, Matsumoto City, Japan

    Hiroyuki Ii (Part: Lead author, Corresponding author )

    International Journal of GEOMATE ( GEOMATE INT SOC )  13 ( 38 ) 79 - 88   2017  [Refereed]  [Invited]

     View Summary

    Over 25 years, approximately 11 million m of water inflow in the Matsumoto tunnel at the north of Matsumoto city was drained. Water inflow in the tunnel during tunnel construction varied from 1 to 8 m per minute decreasing to 1 to 0.6 m per minute between 1993 and 1995. At present, inflow maintains a rate of 0.6 m per minute. Currently, it remains at 0.6 T.U. (Tritium Unit) and the age of water in flowing into the tunnel has been estimated to be over 30 years old from initial H concentration for surface water which varied from 4 to 10 T.U. As oxygen stable isotope values and HCO concentration of water inflow in the tunnel were uniform for 25 years, the source of water inflow in the tunnel is not thought to have changed. Roughly 14 to 39 million m water was still stored in rocks above the tunnel in the plateau from 10 % porosity measured by rock sample. When only 3 million m groundwater, less than one tenth of porosity coincided with effective porosity (0.48 %) or specific yield (0.6 to 1.2 %) was drained, groundwater level decreased widely. Drained water after over 25 years of tunnel construction was derived from unsaturated small pore water excluding main pores or cracks. Therefore, total pore volume was used for slow groundwater migration (flow velocity is 3 to 7 m per year). Cracks or main pores connecting with many pores were important for fast groundwater migration (flow velocity is over 100 m per year). 3 3 3 3 3 - 3 3 3

    DOI

  • Sources and Flow System of Groundwater in the Shimokawa Mine, North Hokkaido, Using Geochemical method and Numerical Simulation

    Shingo TOMIYAMA, Toshihumi IGARASHI, Hiroyuki II, Hideo TAKANO

    Journal of MMIJ ( Mining and Materials Processing Institute of Japan )  132 ( 5 ) 80 - 88   2016  [Refereed]

     View Summary

    The understanding of source and flow path of the groundwater provides important strategy for the environmental management of mines. Thus, groundwater samples from the shaft and level in the Shimokawa mine and the surrounding river water samples were taken and the stable isotopes of hydrogen and oxygen and water quality of the samples were analyzed. The results indicate that shallow groundwater starts mainly from mountain-sides and passes through rocks above ore bodies. The simulation of groundwater flow was also conducted. The distribution of velocity vector of the simulated result showed that down streamlines which flows more than 2×10-3 m per day from mountain-sides to the ore bodies were observed. By considering the altitudes of mountain-sides range from 300 to 550 m, these results correspond well with the altitudes estimated from δD and δ18O values of samples.

    DOI

  • Environmental Isotope-based Estimation of Groundwater Discharge Area and Classification of Hydrochemical Aspects of Distributed Ponds in the Kushiro Wetland

    土原健雄, 吉本周平, 石田聡, 井伊博行

    Journal of Rainwater Catchment Systems   22 ( 1 ) 41 - 50   2016  [Refereed]

  • Distribution characteristics of the annual nitrogen load in Yamato River basin in 2011

    Masanobu Taniguchi, Hiroyuki Ii (Part: Corresponding author )

    International Journal of GEOMATE ( GEOMATE INT SOC )  10 ( 4 ) 2043 - 2049   2016  [Refereed]

     View Summary

    Although there was not enough data to calculate the amount of nitrogen load in the Yamato River basin, some estimation methods were applied for calculation. The estimation of flow rate was made using a calculation of the cross section and velocity using a new method to estimate velocity from cross section and water level values based upon the modified Manning equation. The estimation of total nitrogen concentration was calculated using EC and water level values or flow rate. As a result, the annual total nitrogen load at Kashiwara, Fujii, Itahigashi, Hota, Shintatsuta, Nukatabetakabashi, and Kamihanda stations and the Nara sewage treatment plant were estimated to be 1856, 1793, 751, 498, 260, 188, 83 and 481t/year in 2011. The amounts of total nitrogen load from two sewage treatment plants reached 900t/year, about 45% of those at the Yamato River basin. The annual total nitrogen load at Kashiwara Station under flood conditions with over 24m /sec of flow rate and excluding flood conditions were calculated to be 835 and 1021t/year in 2011. The annual total nitrogen load at Fujii Station was calculated to be 1013t/year under flood conditions with over 22m /sec of flow rate and excluding flood conditions to be 780t/year in 2011. 3 3

    DOI

  • Estimation of evaporation rate of surface water using hydrogen and oxygen isotopic ratios

    Masahiro Yamashita, Hiroyuki Ii (Part: Corresponding author )

    International Journal of GEOMATE ( GEOMATE INT SOC )  11 ( 4 ) 2659 - 2664   2016  [Refereed]

     View Summary

    Both evaporation rate and temperature can be estimated from δD and δ O values of water before and after evaporation. From laboratory evaporation test results of water under uniform temperature condition, relations between evaporation rate, δD and δ O values of water before and after evaporation were expressed at each temperature as the following equations, Y = -0.44X1 + 12.67X2 + 50.90 : 20 degrees C, Y = 0.30X1 + 1.88X2 + 41.86 : 25 degrees C, Y = -1.70X1 +11.80X2 + 7.74 : 30 degrees C, Y = -0.11X1 + 6.37X2+ 34.74 : 35 degrees C, Y = -0.71X1 + 6.82X2+ 35.11: 40 degrees C and Y = -0.17X1 + 4.94X2 +30.05 : 50 degrees C. Y is evaporation rate. X1 is δDae - δDbe - 51.3. X2 is δ Oae - δ Obe -7.52. δDbe and δDae are δD values of water before and after evaporation. δ Obe and δ Oae are δ O values of water before and after evaporation. Evaporation temperature can be also estimated from δD and δ O values of water before and after evaporation. Relation was expressed by the equation, (δDae - δDbe - 51.3) / (δ Oae - δ Obe -7.52) = -0.064 × temperature + 7.45. From δD and δ O distribution map of water before and after evaporation, both evaporation rate and temperature can be also estimated. 18 18 18 18 18 18 18 18 18 18 18

  • As, Sr, Zn, Fe, Mn, Pb and Cu concentrations of seaweed at the Kii Peninsula, Japan

    Hiroyuki Ii (Part: Lead author, Corresponding author )

    International Journal of GEOMATE ( GEOMATE INT SOC )  10 ( 4 ) 2036 - 2042   2016  [Refereed]  [Invited]

     View Summary

    Seaweed from locations ranging from Osaka Bay facing the metropolis to the southern top of the Kii Peninsula facing the Kuroshio Current at the Kii Peninsula were measured for concentrations of arsenic (As), strontium (Sr), zinc (Zn), iron (Fe), manganese (Mn), lead (Pb) and copper (Cu). Except for one location at Kanayama neighboring a closed Pb mine, metal concentrations in seaweed were variable but their average values agreed with the world data. Therefore the influence of the Kuroshio Current water and Osaka Bay water on metal concentration in seaweed was found to be small. As and Sr concentrations in brown seaweed were higher than those in red and green seaweed at the Kii peninsula except at Kanayama, Fe concentrations in green seaweed were higher than those in brown and red seaweed and Zn, Mn, Pb and Cu concentrations in brown, red and green seaweed were all the same. Total Fe, Zn, Mn, Pb and Cu loads of mine waste water from the closed mine into the Kanayama Bay were 4,000 to 6,000, 3,000 to 5,000, 180, 20 and several kg per year. Zn and Fe concentrations in seaweed at Kanayama were remarkably high being 10 to 100 times that of the world value. Mn and Pb concentrations in seaweed at Kanayama were 10 times higher than the world values. Cu concentrations of red and green seaweeds at Kanayama were little higher than the world values.

    DOI

  • Natural ventilation effect on CO2 concentrations in classrooms, Wakayama University, Japan

    Hiroyuki Ii, Kazuki Taguchi, Masahiro Yamashita (Part: Corresponding author )

    International Journal of GEOMATE ( GEOMATE INT SOC )  10 ( 3 ) 1936 - 1942   2016  [Refereed]

     View Summary

    Using a portable CO sensor, the CO concentration in a classroom at Wakayama University was measured and "natural ventilation", the open door or window effect was evaluated based upon the number of persons, room size, door or window condition and CO concentration. Under no ventilation condition in the classroom, increase of CO concentration was 2,000 to 4,000 ppm after 90 minutes and CO production per person per hour due to respiration was 0.005 to 0.015 m /hour/person during a lecture. Comparing CO concentration under no ventilation condition with under natural ventilation condition, effect of natural ventilation to reduce CO concentration per open space size was calculated. The amount of CO gas exchanged outside through doors or windows by natural ventilation was in agreement with the amount of CO gas produced by respiration in the room when sizes of open doors or windows were 2.3 to 12.8 m or ratios of total room volumes per open door or window sizes were 40 to 180 m. 2 2 2 2 2 2 2 2 2 3 2

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  • Dew point elevation and oxygen and hydrogen isotopic ratios for precipitation sampled at osaka and matsue, Japan

    Tetsuya Fukano, Hiroyuki Ii (Part: Corresponding author )

    International Journal of GEOMATE ( GEOMATE INT SOC )  11 ( 5 ) 2712 - 2716   2016  [Refereed]

     View Summary

    Dew point elevation was clarified to be an important factor determining stable isotope values of precipitation. When dew point elevation is high, stable isotope values for precipitation were clarified to increase due to the evaporation process which occurred during dropping from dew point elevation to the ground. In winter wet air from the Japan Sea passes over mountains in the center of Japan and dry air after precipitated at the mountains reaches at the Inland Sea. Subsequently, it is thought that when dew point elevation increases, stable isotope values for precipitation increase with the distance from dew point elevation to the ground then high dew point elevation raises the average isotope value of precipitation. Therefore, the elevation of the precipitation point decreases with an increase of the isotope value. Consequently, altitude effect is thought to be caused by precipitation with high dew point elevation. High dew point elevation and high stable isotope values for precipitation in winter were observed at Osaka in the Inland Sea. On the other hand, these high values at Matsue on the Japan Sea side in winter were rarely observed because of low dew point elevation with wet air.

  • Cu, Co, Cr and Ni of river water, river insect and water plant in the Kinokawa river catchment

    Takuma Kubohara, Hiroyuki Ii (Part: Corresponding author )

    International Journal of GEOMATE ( GEOMATE INT SOC )  10 ( 1 ) 1600 - 1606   2016  [Refereed]

     View Summary

    Metals concentration of insect and plant were useful for evaluating metal contamination and were proposed to be an effective index as metal contamination of river. Heavy metals of water, river insect and water plant were studied in order to clarify influence of geological condition on water, insect and plant metal contamination. Cu, Co, Cr and Ni concentrations of river water were lower than those of insect and plant. Cu and Co concentrations in river insect and water plant were affected by the Cu mines because their concentrations were high in the Cu mine area. Cr and Ni concentrations in river insect and water plant were affected by serpentinite because their concentrations were high in the serpentinite area. It was found that metals concentrations in moss and plant root were effective indicator for the influence of geological condition because Cu and Ni concentrations of plant root and Co and Cr concentrations of moss indicated highest concentration and wide range.

    DOI

  • Cu, Co and Ni contamination index for river using river insects and river plants

    Takuma Kubohara, Hiroyuki Ii (Part: Corresponding author )

    International Journal of GEOMATE ( GEOMATE INT SOC )  11 ( 4 ) 2651 - 2658   2016  [Refereed]

     View Summary

    Useful species as an index of metal contamination needs a high metal concentration in a contaminated area and low metal concentration in a non-contaminated area. Moreover, it needs a high metal concentration factor. Metal concentrations of moss were high in the Cu mine area (31 to 21,000 and 2 to 200 mg/kg-dry for Cu and Co) and were low in the other areas (2 to 87 and 2 to 33 mg/kg-dry for Cu and Co). Ni concentrations of caddice-worm were high in the serpentinite area (9 to 590 mg/kg-dry) and were low in the other areas (2 to 74 mg/kg-dry). Moss had the highest concentration factor (160,000, 4,600 and 59,000 for Cu, Co and Ni) among river plants. Therefore, it was clarified that moss was useful species for an index of Cu, Co and Ni contamination among river plants based upon its metal concentration and concentration factor. In river insects, metal concentrations of crane fly larva were high in the Cu mine area (50 to 1,400 and 1 to 82 mg/kgdry for Cu and Co) and were low in the other areas (11 to 130 and 0.7 to 10 mg/kg-dry for Cu and Co). Crane fly larva had the highest concentration factor for Cu (46,000) and also kept high concentration factor for Co (2,700) among river insects. Ni concentrations of caddice-worm were high in the serpentinite area (52 to 220 mg/kg-dry) and were low in the other areas (0.3 to 20 mg/kg-dry). Caddice-worm had the highest Ni concentration factor (22,000) among river insects. Therefore, it was clarified that crane fly larva was useful species for an index of Cu and Co contamination and caddice-worm was useful species for an index of Ni contamination based upon their metal concentrations and concentration factors.

  • Flow and geochemical modeling of drainage from Tomitaka mine, Miyazaki, Japan

    Kohei Yamaguchi, Shingo Tomiyama, Hideya Metugi, Hiroyuki Ii, Akira Ueda (Part: Corresponding author )

    Journal of Environmental Sciences (China) ( SCIENCE PRESS )  36   130 - 143   2015.10  [Refereed]

     View Summary

    The chemistry and flow of water in the abandoned Tomitaka mine of Miyazaki, western Japan were investigated. This mine is located in a non-ferrous metal deposit and acid mine drainage issues from it. The study was undertaken to estimate the quantities of mine drainage that needs to be treated in order to avoid acidification of local rivers, taking into account seasonal variations in rainfall. Numerical models aimed to reproduce observed water levels and fluxes and chemical variations of groundwater and mine drainage. Rock-water interactions that may explain the observed variations in water chemistry are proposed. The results show that: (1) rain water infiltrates into the deeper bedrock through a highly permeable zone formed largely by stopes that are partially filled with spoil from excavations (ore minerals and host rocks); (2) the water becomes acidic (pH from 3 to 4) as dissolved oxygen oxidizes pyrite; (3) along the flow path through the rocks, the redox potential of the water becomes reducing, such that pyrite becomes stable and pH of the mine drainage becomes neutral; and (4) upon leaving the mine, the drainage becomes acidic again due to oxidation of pyrite in the rocks. The present numerical model with considering of the geochemical characteristics can simulate the main variations in groundwater flow and water levels in and around the Tomitaka mine, and apply to the future treatment of the mine drainage.

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  • Stable isotopes as indicators of water and salinity sources in a southeast Australian coastal wetland: identifying relict marine water, and implications for future change

    Matthew J. Currell, Peter Dahlhaus, Hiroyuki Ii (Part: Corresponding author )

    HYDROGEOLOGY JOURNAL ( SPRINGER )  23 ( 2 ) 235 - 248   2015.03  [Refereed]

     View Summary

    The Lake Connewarre Complex is an internationally protected wetland in southeast Australia, undergoing increasing environmental change due to urbanisation. Stable isotopes of water (δ O and δ H) and other geochemical indicators were used to assess sources of water and salinity in the shallow groundwater and surface-water systems, and to better understand groundwater/surface-water interactions. While much of the shallow groundwater is saline (from 1.27 to 50.3 g/L TDS) with overlapping salinities across water groups, stable isotopes allow clear delineation of two distinct sources of water and salinity: marine water with δ O between −1.4 and +1.3 ‰ and ion ratios characteristic of seawater; and meteoric water with δ O between −6.1 and −3.6 ‰ containing cyclic salts, probably concentrated by plant transpiration. Groundwater bodies in shallow sediments beneath the wetlands have salinities and stable isotopic compositions intermediate between fresh wetland surface water and a marine water end-member. This marine-type water is likely relict seawater emplaced when the wetlands were connected to the estuary, prior to modern river regulation. Freshwater input to underlying groundwater is a recent consequence of this regulation. Future predicted changes such as increased stormwater inflow, will increase rates of freshwater leakage to shallow groundwater, favouring the proliferation of exotic reed species. 18 2 18 18

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  • Water balance analysis considering runoff of ungauged catchments in iwaki river basin, Northern Japan

    Soichiro Kageyama, Shingo Tomiyama, Makoto Ikeda, Hiroyuki Ii (Part: Corresponding author )

    International Journal of GEOMATE ( GEOMATE INT SOC )  9 ( 1 ) 1434 - 1440   2015  [Refereed]

     View Summary

    For integrated and sustainable water resource management, it is essential to understand water balance of river basin. Infiltration calculated by subtracting evapotranspiration and runoff from precipitation is a key factor for groundwater resource development and is an important input data for three-dimensional groundwater flow analysis. For estimation of runoff, it needs a great challenge to establish a method for runoff in ungauged catchments, because gauging stations are usually set up in the limited main rivers. This paper focused on close relation between topography and runoff. Then, the runoff of ungauged catchments in the Iwaki River Basin was estimated by "runoff index" derived from results of geomorphometry and multivariate statistics using digital elevation model data. Comparisons between runoff indices and measured runoff data, showed clear positive correlations. This result proved that runoff index was useful for runoff estimation, and suggested that it was possible to estimate runoff of ungauged catchments from runoff index by linear regression equation.

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  • Cu, ZN and as contamination of seaweed beside shizuki and kanayama metal mines in Japan

    Hiroyuki Ii (Part: Lead author, Corresponding author )

    International Journal of GEOMATE ( GEOMATE INT SOC )  9 ( 1 ) 1411 - 1417   2015  [Refereed]

     View Summary

    Brown seaweed, Sargassum thunbergii is thought to be effective for As, Cu and Zn sensor. Green seaweed, Ulvales, red seaweed, Caulacanthus ustulatus and Ahnfeltiopsis flabelliformis are thought to be effective for just Cu sensor. High Zn concentration and large volume of Zn drainage water from the closed Kanayama mine flowed into sea and drainage water and groundwater containing Cu, Zn and As contacted with muck along the coast also flowed into sea in the closed Shizuki mine. Cu, Zn and As concentrations for many kinds of seaweed sampled at the two mines and no contamination places, the Kii and Izu Peninsula, were measured. Cu Zn and As concentrations for Sargassum thunbergii are 1000, several 100 and several 100 ppm at the Shizuki mine and 10, several 1000 and 100 ppm at the Kanayama mine, and 10, several 10 and 100 ppm at the no contamination places.

    DOI

  • Importance of corydalidae as an index of metal contamination of river

    Akihiro Fujino, Hiroyuki Ii (Part: Corresponding author )

    International Journal of GEOMATE ( GEOMATE INT SOC )  9 ( 2 ) 1483 - 1490   2015  [Refereed]

     View Summary

    Larva of Corydalidae, a kind of dobsonfly was useful for evaluating a metal contamination of catchment. Dobsonfly larva eats many kinds of aquatic insects as food. Then, metal derived from wide area of river soil and river water is concentrated in the dobsonfly larva for long term by food chain. The average Cu, Fe, Mn, Pb, Zn and As concentrations of dobsonfly larva under the polluted zone was high. Metal concentration of dobsonfly was clarified to be strongly influenced by river metal condition as well as mayfly and caddisfly. Cu, Fe, Mn, Pb, Zn and As concentration factors for dobsonfly were very variable depending on river metal concentration and totally the average factors for dobsonfly were almost similar values for mayfly and caddisfly. However, caddisfly and mayfly are clarified into many kinds of species and concentration factor depends on each specie. Dobsonfly is 2 or 3 species in Japan. Therefore, dobsonfly was thought to be useful for Cu, Fe, Mn, Pb, Zn and As contamination indicator.

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  • Flow, recharge and mixing processes in the Werribee Basin (Australia) using natural environmental isotope geochemistry: Implications for water resources management

    S. Michael Adelana, Graeme Allinson, Matt Kitching, Hiroyuki Ii, Scott Salzman, Elissa McNamara, Masonobu Taniguchi, George Croatto, Bruce Shelley (Part: Corresponding author )

    Groundwater: Hydrogeochemistry, Environmental Impacts and Management Practices     141 - 183   2014.10  [Refereed]

     View Summary

    Chloride (Cl) and stable isotope (δ O, δD) compositions in rainfall, river water, shallow and deeper groundwaters have been used to investigate the recharge, flow and mixing processes through the aquifer system within the Werribee basin, southwest of Melbourne (Australia). Total Dissolved Solids (TDS) contents and nitrate concentrations are generally lower at the upper and mid-catchments compared to the lower catchment. The Cl- and TDS, together with δ O/Cl and Cl /Br ratios imply that evaporation (e.g. from shallow watertable) and transpiration (e.g. from the all-year-round cropping) during recharge represent the main processes controlling groundwater composition, in addition to mineral weathering. Measured groundwater δ O and δD values scatter around the local meteoric water line indicating that groundwater is primarily of meteoric origin... The shallow groundwater, particularly at the delta (delta aquifer) must have been derived from a combination of sources: the sea, recycled water and river delta water from surface irrigation and upstream groundwater from upper catchment area. There is evidence of vertical mixing in the basin based on the TDS distribution and elevated NO3 concentrations up to 45 m depth below ground surface. However, TDS and NO3 contents generally decrease and homogenizes with depth. These are consistent with gradual vertical mixing (calculated mixing ratios) from between saline shallow borehole delta and lower salinity deeper groundwater in the Brighton Group aquifer. Using isotope geochemistry to identify where potential surface contamination may occur and/or to confirm seawater intrusion is an important contribution to protecting valuable groundwater resources within the metropolitan city of Melbourne. 18 18 - - - 18 - -

  • PROPOSAL OF MEASUREMENT METHOD FOR EVAPORATION RATE FOR SURFACE WATER USING OXYGEN ISOTOPE IN DRY AREA

    宮原 啓, 井伊 博行, DAHLHAUS Peter

    水工学論文集 土木学会水工学委員会 編 ( 土木学会 )  58   1603 - 1608   2014  [Refereed]

  • Groundwater contamination due to irrigation of treated sewage effluent in the Werribee delta

    Hiroyuki Ii, Ataru Satoh, Masanobu Taniguchi, Matt Kitching, George Croatto, Bruce Shelley, Graeme Allinson (Part: Lead author, Corresponding author )

    International Journal of GEOMATE   3 ( 1 ) 332 - 338   2012.09  [Refereed]

     View Summary

    The Werribee River, groundwater and Melbourne's treated sewage effluent (or recycled water) are used for irrigation water in the Werribee Delta. Groundwater beneath the Werribee delta may be contaminated by the recycled water. The mixing ratios of the sea water, upstream groundwater and recycled waters for delta groundwater were calculated from water chemistry. The mixing ratio of the recycled water varied from 10 to 30 % at all depths and delta groundwater was found to be largely comprised by irrigated recycled water. The NO - contamination of delta groundwater is thought to be caused by recycled water and agricultural use of fertilizers. A high mixing ratio of sea water was found at 30 m in depth and this zone was thought to be a salt-water wedge. © 2012, International Journal of GEOMATE. 3

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  • Proposal of simple measurement method for evaporation rate by using oxygen isotopic ratio

    Satoshi Miyahara, Hiroyuki Ii (Part: Corresponding author )

    International Journal of GEOMATE   3 ( 1 ) 318 - 324   2012.09  [Refereed]

     View Summary

    The purpose of this study is to develop simple method for estimating evaporation rates of water using oxygen isotopic ratio. From the laboratory test, strong negative correlation between average humidity and oxygen isotopic ratio change per unit evaporation rate was observed and humidity was clarified to be important parameter. The evaporation rate can be calculated from the amount of change of the oxygen isotopic ratio during evaporation. The amount of change of the oxygen isotopic ratio per unit the amount of change of evaporation rate estimated empirically under each humidity condition. The amount of evaporation per year in the Inawashiro Lake in Fukushima was estimated to be 590mm/year from the relation between humidity and evaporation rate and the estimated value was in agreement with the calculation result of previous research, 600mm/year. Therefore, the simple estimation method is effective for estimation of evaporation rate of an actual lake or a pond especially in a dried area because the measurement error is small under the low humid condition. © 2012, International Journal of GEOMATE.

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  • RELATION BETWEEN AMOUNT OF NITROGEN FERTILIZER USED AND WATER QUALITY IN TEA PLANTATION, SIMIZU DISTRICT, SHIZUOKA CITY

    NISHIO YOHEI, II HIROYUKI, HIRATA TATEMASA (Part: Last author )

    Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) ( Japan Society of Civil Engineers )  67 ( 4 ) I_1279 - I_1284   2011  [Refereed]

     View Summary

    Nitrate concentration of groundwater was estimated from land use, amount of total nitrogen fertilizer, amount of absorbed nitrogen by plant and actual nitrate concentration of each catchment. The estimated nitrate concentration was in agreement with the actual concentration in the studied area. However, water balance is necessary for estimation under the different weather condition. The concentration estimated from amount of total nitrogen fertilizer minus absorbed nitrogen by plant divided by precipitation minus evapotranspiration was in agreement with the actual concentration and then nitrogen fertilizer was thought to be dissolved on the surface and solution was thought to infiltrate into soil.

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  • 水資源量の算定の自動化に関する研究 奈良盆地の水収支について

    谷口正伸, 井伊博行, 平田健正 (Part: Corresponding author )

    環境工学研究論文集   48   2011  [Refereed]

  • Modeling of groundwater recharge and discharge in Tomitaka mine, Miyazaki Prefecture

    TOMIYAMA Shingo, II Hiroyuki, KOIZUMI Yukiko, METUGI Hideya (Part: Corresponding author )

    Journal of Groundwater Hydrology ( Japanese Association of Groundwater Hydrology )  52 ( 3 ) 261 - 274   2010.08  [Refereed]

     View Summary

    In the Tomitaka abandoned mine, mine drainage containing arsenic has drained into the sea without any processing and a neutralizing process is discussed to be necessary. From the field study, boring investigation and the existing data, the rock between the Umehi fault and Nikohi fault is assumed to be a high permeability zone. It is considered that precipitation infiltrates from mountain-side of Mt. Daiosan, groundwater passes through unsaturated high permeability zone and then flows into the lower rivers around Mt. Daiosan and mine levels. The numerical model is built based on the conceptual model containing the influence of precipitation on both mine drainage flow rate and groundwater level. As the result is nearly consistent with the measured value, the conceptual model is thought to be moderate.

    DOI

  • Stable Isotopic Composition and Origin of Hot Spring Water in Shimokita Peninsula, Aomori Prefecture

    Shingo TOMIYAMA, Hiroyuki II, Tomoko UEHARA, Yukiko KOIZUMI, Hiroyo WAMURO

    J. Hot Spring Sci. ( Japan Society of Hydrology and Water Resources )  59 ( 4 ) 261 - 272   2010.03  [Refereed]

    DOI

  • Sources and Flow System of Groundwater in the Hosokura Mine, Miyagi Prefecture, Using Geochemical Method and Numerical Simulation

    TOMIYAMA Shingo, UEDA Akira, II Hiroyuki, NAKAMURA Yukinobu, KOIZUMI Yukiko, SAITO Keiichiro, SAITO Keiichiro (Part: Corresponding author )

    Journal of MMIJ ( The Mining and Materials Processing Institute of Japan )  126 ( 1 ) 31 - 37   2010.01  [Refereed]

     View Summary

    The understanding of source and flow path of the groundwater provides important strategy for the environmental management of the mine area. Then, in order to clarify a source and flow paths of groundwater around a closed mine, stable isotopes of hydrogen and oxygen and water quality of river water and groundwater sampled from the mining shafts and levels in the Hosokura mine were studied. The hydrogen and oxygen stable isotopes indicating altitude effect for river water and the chemical character of sampled water suggest groundwater flows mainly from the north area of Hosokura mine to the ore bodies under the center of the mine area. The distributions of total head and darcy velocity calculated by the numerical simulation analysis show down streamlines from highland to the ore bodies and correspond well with the flow system estimated from stable isotopes and water quality of the sampled water.

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  • 大和川における生物分解による窒素形態の変化について

    谷口正伸, 井伊博行, 平田健正 (Part: Corresponding author )

    水工学論文集(CD-ROM)   54   2010  [Refereed]

  • Stable isotopic analysis and groundwater flow simulation as potential tools for estimating groundwater sources used for food materials

    Shingo Tomiyama, Hiroyuki Ii, Tomoko Uehara, Takashige Wakita (Part: Corresponding author )

    Nippon Shokuhin Kagaku Kogaku Kaishi ( Japanese Society for Food Science and Technology )  57 ( 1 ) 32 - 39   2010  [Refereed]

     View Summary

    Understanding the source and chemical characteristics of groundwater provides important strategies for quality management of mineral water and food materials. To identify the source of groundwater used for food materials, water quality and stable isotopes of hydrogen and oxygen were examined in well water from Mizuho City, Japan. The well water samples had similar chemical characteristics to river water around the study area. The hydrogen and oxygen isotopic ratios of the well water samples indicated that their origin was solely meteoric and that the groundwater mainly originated from upstream of the Neo River (and other rivers) around the study area. The subsequent groundwater simulation produced down streamlines from the upper stream areas of the Neo River and around the study area, which corresponded well with the groundwater flow estimated from δD and δ O values of the samples. Thus, the stable isotope analysis and groundwater flow simulation appear to be useful tools for tracing the origin of groundwater used for food materials. 18

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  • 大和川における河川浄化施設の効果について

    下村卓矢, 井伊博行, 谷口正伸, 平田健正 (Part: Corresponding author )

    水工学論文集(CD-ROM)   54   2010  [Refereed]

  • 屋久島の酸素同位体比の実測値を用いた内陸効果と標高効果の算定

    横田恭平, 井伊博行, 谷口正伸 (Part: Corresponding author )

    環境工学研究論文集   47   2010  [Refereed]

  • Estimating origin of mine drainage using water quality and isotopic characteristics in the Bajo mine, Oita prefecture

    富山 眞吾, 井伊 博行, 市川 宏 (Part: Corresponding author )

    Geology, environmentology and technology in Kyushu ( 日本応用地質学会 )  ( 31 ) 3 - 9   2009.12  [Refereed]

  • Estimation of the sources and flow system of groundwater in the Bajo mine area by groundwater flow simulation considering water balance of river basin

    富山 眞吾, 井伊 博行, 景山 宗一郎 (Part: Corresponding author )

    Geology, environmentology and technology in Kyushu ( 日本応用地質学会 )  ( 31 ) 10 - 17   2009.12  [Refereed]

  • Deployment of DGT units in marine waters to assess the environmental risk from a deep sea tailings outfall

    John E. Sherwood, Darlene Barnett, Neil W. Barnett, Kylie Dover, Julia Howitt, Hiroyuki Ii, Peter Kew, Julie Mondon (Part: Corresponding author )

    Analytica Chimica Acta ( ELSEVIER SCIENCE BV )  652 ( 1-2 ) 215 - 223   2009.10  [Refereed]

     View Summary

    Measurements of total, filterable and DGT-labile concentrations of nine metals (Al, Cd, Cr, Cu, Fe, Pb, Mn, Ni and Zn) have been made at five sites up to 4.2 km from a deep sea tailings outfall operated by Lihir Gold Ltd. at Lihir Island, Papua New Guinea. At each site, pairs of DGT units (one containing a 0.4 mm and the other a 0.8 mm diffusive gel layer) were deployed at three depths (50-70; 105-130; 135-155 m) for 4-7 days. Comparison of predicted water column DGT-labile metal concentrations in field deployments showed the 0.8 mm DGT units were relatively enriched in metals, with the effect being greatest closer to the outfall for Pb and Mn and least for Fe, Cr, Ni and Zn. The most likely explanation for this is that in addition to simple ion diffusion, kinetic factors associated with ageing or desorption processes govern release of metals from iron and aluminium oxyhydroxide colloids which diffuse through the gels. The thicker gels have a longer residence time over which metals can be released for adsorption. This model explains why enrichment is most pronounced near the outfall; more distant sites have lower colloid concentrations because of the longer time for coagulation to increase particle sizes to the extent they cannot enter the gels. Total and filterable metal (FM) concentrations were frequently below the limits of detection (LOD) achievable by conventional ICP-AES (1-52 μg L ) and this limited their usefulness for assessing environmental risk and for metal speciation determination. Because of its pre-concentration step DGT gave metal concentrations above their LODs and these decreased exponentially with distance from the outfall. Concentrations of DGT-labile metal fell below Australian water quality guidelines for protection of 99% of marine organisms within 0.13 km of the outfall for Cd, Cr and Ni and below that for protection of 95% of marine organisms within 0.4, 0.7 and 3.6 km for lead, zinc and copper, respectively. © 2009 Elsevier B.V. All rights reserved. -1

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  • 静岡市清水区の茶畑丘陵地での施肥による湧水・沢水水質への影響

    西尾洋平, 井伊博行, 谷口正伸

    土木学会年次学術講演会講演概要集(CD-ROM)   64th ( Disk 2 )   2009

  • Estimation of the sources and flow system of groundwater in Fuji-Gotenba area by stable isotopic analysis and groundwater flow simulation

    Shingo Tomiyama, Hiroyuki Ii, Shusaku Miyaike, Ryota Hattori, Yuji Ito (Part: Corresponding author )

    Bunseki Kagaku ( The Japan Society for Analytical Chemistry )  58 ( 10 ) 865 - 872   2009  [Refereed]

     View Summary

    Understanding the source and chemical character of the groundwater provides an important strategy for the quality management of mineral water and food materials. In order to identify a source and the flow paths of groundwater used for mineral water, the water quality and stable isotopes of hydrogen and oxygen of well water in Gotenba city were studied. The electrical conductivity and chemical character of sampled water are similar to those of well water and spring water discharged elsewhere around Mt. Fuji. The hydrogen and oxygen isotopic ratios of water samples indicate their origin to be solely meteoric and the oxygen isotopic ratios suggest that the groundwater mainly originated from the mountain-side of Mt. Fuji at altitudes of from 1500 m to 2300 m. A subsequent simulation of groundwater showed that the distribution of the total head and the Darcy velocity are down streamlines from mountain-sides toward the study area in Gotenba city. The altitudes of discharge obtained by the simulation are above 2000 m, and these correspond well with altitudes estimated from δ O values of the samples. © 2009 The Japan Society for Analytical Chemistry. 18

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  • 酸素同位体比と湿度を利用した湖の蒸発率推定法の提案

    宮路和葉, 井伊博行, 宮原啓 (Part: Corresponding author )

    水工学論文集(CD-ROM)   53   2009  [Refereed]

  • 紀の川上流部に位置する大滝ダムにおける珪藻類の増殖因子から推定する渦鞭毛藻類の抑制環境

    和田雅光, 井伊博行, 谷口正伸 (Part: Corresponding author )

    水工学論文集(CD-ROM)   53   2009  [Refereed]

  • 屋久島の渇水期における酸素・水素安定同位体比と水質変化

    横田恭平, 井伊博行, 谷口正伸 (Part: Corresponding author )

    水工学論文集(CD-ROM)   52   475 - 480   2008  [Refereed]

    DOI

  • 紀ノ川流域のダム・堰における植物プランクトンと全窒素・カルシウムイオンとの関係

    岩根良和, 井伊博行, 谷口正伸 (Part: Corresponding author )

    水工学論文集(CD-ROM)   52   1303 - 1308   2008  [Refereed]

    DOI

  • 酸素同位体比を利用した猪苗代湖における蒸発率の簡易測定法の提案

    宮路和葉, 岡田啓, 井伊博行, 長林久夫 (Part: Corresponding author )

    水工学論文集(CD-ROM)   52   289 - 294   2008  [Refereed]

    DOI

  • INFLUENCE OF FLOW CONDITION AND TEMPERATURE ON NUMBERS AND SPECIES OF PHYTOPLANKTON IN THE KINOKAWA RIVER

    TERAMOTO Takeshi, IWANE Yoshikazu, ISHIZUKA Masahide, II Hiroyuki (Part: Corresponding author )

    Journal of hydroscience and hydraulic engineering   25 ( 1 ) 89 - 97   2007.05  [Refereed]

  • Recharge Area of Distributed Springs in Kushiro Wetland Estimated from Hydrogen and Oxygen Stable Isotope Ratios and Tritium Concentration

    TSUCHIHARA Takeo, II Hiroyuki, ISHIDA Satoshi, IMAIZUMI Masayuki (Part: Corresponding author )

    Transactions of The Japanese Society of Irrigation, Drainage and Reclamation Engineering ( The Japanese Society of Irrigation, Drainage and Rural Engineering )  2006 ( 245 ) 73 - 83   2007  [Refereed]

     View Summary

    The Chiruwatsunai River, one of the major natural rivers in the Kushiro Wetland, is located in the northern part of the wetland and nurses rich ecosystems by providing groundwater from a lot of springs, which are classified into boiling-sand and crater types. This study, using a coupled hydrogeological and geochemical (stable isotope and radioisotope) approach, focuses on the groundwater flow system forming the springs distributed in the Chiruwatsunai River watershed. Stable isotopes of <SUP>2</SUP>H and <SUP>18</SUP>O in water are conservative in groundwater flow systems and can be used to tag the source of groundwater, and the radioisotope 311, which has a half-life of 12.43 years, can be used to approximate the mean residence time of relatively young groundwater. The spatial distribution of the hydraulic head, determined from data obtained by the installed groundwater monitoring wells, represents the vertical groundwater flow from groundwater system to the wetland; this flow forms the springs on the ground. Auger boring and portable dynamic cone penetration test reveal that this vertical groundwater flow arises along a hypothetical fault of clay layer. Stable isotope analysis of the spring and stream waters in the Chiruwatsunai River watershed and of stream water flowing into the Kushiro Wetland reveals that the springs have a regional recharged area outlying the river's catchment area, and are fed by groundwater from a regional flow system. Analysis of the <SUP>3</SUP>H concentration of the water in crater-type spring and of the groundwater in the wetland shows that the residence time of the groundwater from the regional flow system is about 50 years or more. These results reveal that groundwater flow from a regional flow system as well as a local flow system has a significant influence on the hydrologic environment of the wetland.

    DOI

  • 水素・酸素同位体を用いた屋久島における温泉水の起源推定

    横田恭平, 井伊博行, 谷口正伸, 平田健正 (Part: Corresponding author )

    水工学論文集(CD-ROM)   51   475 - 480   2007  [Refereed]

    DOI

  • 猪苗代湖周辺表流水のリン,鉄,アルミニウムの挙動

    岡田啓, 井伊博行, 長林久夫, 山田章子 (Part: Corresponding author )

    水工学論文集(CD-ROM)   51   1367 - 1372   2007  [Refereed]

    DOI

  • 酸素・水素安定同位体比による釧路湿原内の湧水の起源推定

    北野梓沙, 井伊博行, 今泉眞之, 土原健雄, 谷口正伸 (Part: Corresponding author )

    水工学論文集(CD-ROM)   51   1099 - 1104   2007  [Refereed]

    DOI

  • Living limits of dragonfly in rivers with domestic sewage inflow in the southern part of Osaka.

    Yokota, K, Ii, H, Yabu, S (Part: Corresponding author )

    Journal of Hydroscience and Hydraulic Engineering   25 ( 2 ) 1 - 11   2007  [Refereed]

  • Effect of enriched early dropped rainwater on mesoscale isotopic distribution in surface water on the Kii Peninsula, Japan

    Masahide Ishizuka, Yumi Sone, Hiroyuki Ii, Tatemasa Hirata (Part: Corresponding author )

    Water Resources Research ( AMER GEOPHYSICAL UNION )  42 ( 12 ) 1 - 16   2006.12  [Refereed]

     View Summary

    Mesoscale spatial distributions and temporal variations of oxygen and hydrogen isotope compositions in surface waters were observed on the Kii Peninsula, Japan, which receives more than 3000 mm of precipitation annually. The enriched isotopic values were distributed along the western, southern, and eastern coasts. To explain this, we proposed a new parameter, early dropped rainwater frequency (ERF), and defined it as the number of times that early dropped rainwater was first observed in a domain. ERF can be considered a characteristic of rainfall, and it is a useful parameter for clarifying mesoscale isotopic distribution. A mass balance simulation suggested the early dropped rainwater determined the specific isotopic value of stream water in a watershed. Copyright 2006 by the American Geophysical Union.

    DOI

  • 廃棄物最終処分場の用地選定手法に関する研究

    金子 泰純, 井伊 博行, 石井 信之

    廃棄物学会研究発表会講演論文集 ( 廃棄物学会 )  17 ( Pt.1 ) 242 - 244   2006.11

  • Recharge Area of Distributed Springs in Kushiro Wetland Estimated from Hydrogen and Oxygen Stable Isotope Ratios and Tritium Concentration

    TSUCHIHARA Takeo, II Hiroyuki, ISHIDA Satoshi, IMAIZUMI Masayuki (Part: Corresponding author )

    Transactions of the Japanese Society of Irrigation, Drainage and Reclamation Engineering ( 農業土木学会 )  74 ( 5 ) 755 - 765   2006.10  [Refereed]

  • 紀ノ川下流における植物プランクトンの個体数と種構成の春から夏にかけての変化

    寺本健士, 岩根良和, 石塚正秀, 井伊博行, 平田健正 (Part: Corresponding author )

    水工学論文集(CD-ROM)   50   1111 - 1116   2006  [Refereed]

    DOI

  • 大阪府南部の生活排水が流入する河川におけるヤゴの生息限界について

    横田恭平, 井伊博行, 養父志乃夫, 平田健正 (Part: Corresponding author )

    水工学論文集(CD-ROM)   50   1105 - 1110   2006  [Refereed]

    DOI

  • 香川県仲多度郡満濃町炭所西地区における溜池及び沢水の鉄起源の解明

    室賀英治, 井伊博行, 中島敦司, 谷口正伸 (Part: Corresponding author )

    水工学論文集(CD-ROM)   50   1339 - 1344   2006  [Refereed]

    DOI

  • Behavior of soil nitrogen and leaching of metal elements from arable land

    Yumi Ogawa, Osami Nakasugi, Masataka Nishikawa, Tatemasa Hirata, Hiroyuki Ii

    International Journal of Environmental Analytical Chemistry ( TAYLOR & FRANCIS LTD )  85 ( 3 ) 209 - 221   2005.03  [Refereed]

     View Summary

    In Japan, large amounts of fertilizer nitrogen are applied to tea plantations. We collected samples of tea plantation soil each season for a year. Samples were analyzed for their contents of various inorganic chemicals and total N. Nitrogen was present mainly in the top 0 to 30 cm of soil. However, at times the concentration of nitrate N in the soil water was more than 35 mg L , even in the deepest layers. The contents of various metal elements in the soil were examined. Ba, Fe, Sr and Zn contents were high in the top 0 to 30 cm of soil. But Al and Mn contents were not always high in the top 0 to 30 cm of soil. From the correlation analysis among contents of various inorganic chemicals, it was suggested that increased leaching of Al, Mn, and Zn from tea plantation soil occurred with increased nitrate N concentration. © 2005 Taylor & Francis Group Ltd. -1

    DOI

  • 紀伊山地上流に位置する猿谷ダムにおける水質・植物プランクトンの長期変化

    石塚正秀, 寺本健士, 海原健吾, 紺野雅代, 清家志乃, 井伊博行, 平田健正

    水工学論文集   49 ( 2 ) 1171 - 1176   2005  [Refereed]

    DOI

  • 紀ノ川下流の淡水域・汽水域における冬季から夏季の栄養塩・植物プランクトンの現地調査

    石塚正秀, 寺本健士, 紺野雅代, 井伊博行, 平田健正

    水工学論文集   49 ( 2 ) 1519 - 1524   2005  [Refereed]

    DOI

  • 大和川における水温を考慮したBOD負荷量の推定

    谷口正伸, 井伊博行, 平田健正, 石塚正秀 (Part: Corresponding author )

    水工学論文集   49 ( 2 )   2005  [Refereed]

  • 大和川での1時間毎の自動観測測定から導き出されたCODの流量依存特性

    高野芳隆, 井伊博行, 石塚正秀, 平田健正, 元永秀 (Part: Corresponding author )

    水工学論文集   49 ( 2 )   2005  [Refereed]

  • 和歌山県紀ノ川の水質特性から算定したCOD及びCOD負荷量

    高野芳隆, 井伊博行, 石塚正秀, 平田健正, 平井秀輝 (Part: Corresponding author )

    水工学論文集   48 ( 2 )   2004  [Refereed]

  • 酸素欠乏環境下での有機物分解に伴う貧栄養化現象

    室賀英治, 井伊博行, 中島敦司 (Part: Corresponding author )

    環境工学研究論文集   41   2004  [Refereed]

  • 大和川の生活排水起源物質の河川内での変化

    谷口正伸, 井伊博行, 平田健正, 石塚正秀 (Part: Corresponding author )

    水工学論文集   48 ( 2 )   2004  [Refereed]

  • Dissolves silicate characteristics in Kinokawa river basin

    Ishizuka, M, Konno, M, Ii, H, T. Hirata (Part: Corresponding author )

    Annual Journal of Hydraulic Engineering   48   1483 - 1488   2004  [Refereed]

  • 環境同位体と流量測定によるトンネル湧水の起源推定

    後藤大輔, 井伊博行, 平田健正, 吉国孝成, 大塚康範, 金川正敏 (Part: Corresponding author )

    環境工学研究論文集   41   2004  [Refereed]

  • 溶存ケイ素に着目した紀ノ川流域における水質特性

    石塚正秀, 紺野雅代, 井伊博行, 平田健正

    水工学論文集   48 ( 2 ) 1483 - 1488   2004  [Refereed]

    DOI

  • 紀伊半島における地表水の安定同位体比の空間分布と降雨-地形特性との関係

    石塚正秀, 曽根由実, 井伊博行, 平田健正

    水工学論文集   48 ( 1 ) 235 - 240   2004  [Refereed]

    DOI

  • Countermeasure of Contaminated Groundwater by Nitrate Nitrogen

    II Hiroyuki (Part: Lead author, Corresponding author )

    Journal of Japan Society on Water Environment ( 日本水環境学会 )  26 ( 9 ) 563 - 566   2003.09  [Refereed]

  • Assessment of Water Quality using GIS in Tea Cultivated River Basin

    小川祐美, 中杉修身, 西川雅高, 井伊博行, 平田健正 (Part: Corresponding author )

    環境科学会誌   16 ( 3 )   2003  [Refereed]

  • The river water quality and estimation of pollutant loads in the Kinokawa catchments

    谷口正伸, 井伊博行, 江種伸之, 平田健正, 荒木直哉 (Part: Corresponding author )

    環境工学研究論文集   40   2003  [Refereed]

  • 地表水の安定同位体比の空間分布に与える地形効果の解明 重回帰分析を用いた検討

    石塚正秀, 曽根由実, 井伊博行, 平田健正

    水工学論文集   47   1045 - 1050   2003  [Refereed]

    DOI

  • A new quantitative method to estimate a nitrogen origin of contaminated water from several nitrogen resources

    山野賢一, 井伊博行, 平田健正, 石塚正秀

    環境工学研究論文集   40   481 - 488   2003  [Refereed]

    DOI

  • GROUNDWATER METAL AND NITROGEN CONTAMINATIONS CAUSED BY NITROGEN FERTILIZER IN TEA PLANTATION CATCHMENT, THE CENTER OF SHIZUOKA, JAPAN

    TANAKA Toyokazu, II Hiroyuki, HIRATA Tatemasa, NISHIKAWA Masataka, UMEHARA Kouichi, OGAWA Yumi

    Japan, Journal of Hydroscience and Hydraulic engineering   20 ( 1 ) 37 - 47   2002.05  [Refereed]

  • Modeling Fluctuations in the Water Quality of Effluent from a Tea Cultivation Drainage Area : Focus on Nitrate-Nitrogen Concentration

    OGAWA Yumi, NAKASUGI Osami, NISHIKAWA Masataka, II Hiroyuki, HIRATA Tatemasa, MATSUO Kiyoshi

    ENVIRONMENTAL SCIENCE ( SOCIETY OF ENVIRONMENTAL SCIENCE, JAPAN )  15(3), 163-172 ( 3 ) 163 - 172   2002  [Refereed]

     View Summary

    Effluent from a tea plantation was monitored for one year in Shizuoka Prefecture, Japan. Seasonal fluctuations in the concentrations of multiple chemical components and in the nitrogen isotope ratio of nitrate were clearly revealed. A Water quality model based on flow rate and the quantity of nitrate accumulated was developed to estimate the concentration of nitrate in the Tea plantation effluent. Fluctuations in the loads of all that substances in the effluent did not depend on the time of fertilizer input. The nitrogen isotope ratio of nitrate in the effluent fluctuated for 9.0-13.5‰ except during a period of water shortage in August. it is estimated that the δ<SUP>15</SUP>N value of the organic fertilizer is reflected in δ<SUP>15</SUP>N value of groundwater in this area. Concentrations of SO<SUB>4</SUB><SUP>2-</SUP>, C1<SUP>-</SUP>, Na, Ca, Sr were explained by the natural logarithm of the flow rate, and concentrations of K, Mg, F<SUP>-</SUP>, Mn, Ni were explained by the NO<SUB>3</SUB><SUP>-</SUP> concentration in a liner regression model to good precision. Relative errors between the observed and calculated concentration determined by the regression model were within 8%. In the water quality model forNO<SUB>3</SUB><SUP>-</SUP> concentration, seasonal fluctuations and the range of calculated nitrate concentrations corresponded to observed data.

    DOI

  • 大和川のBOD,アンモニア態窒素,陰イオン界面活性剤濃度の季節変動とその原因について

    井伊博行, 谷口正伸, 平田健正, 石塚正秀, 窪原拓馬, 伊勢達男, 宮川勇二 (Part: Lead author, Corresponding author )

    水工学論文集   46   2002  [Refereed]

    DOI

  • 大和川流域における物質移動量の推定

    窪原拓馬, 井伊博行, 平田健正, 石塚正秀, 谷口正伸, 伊勢達男, 宮川勇二 (Part: Corresponding author )

    水工学論文集   46   2002  [Refereed]

  • 紀ノ川の物質負荷量の推定と土地利用との関係

    荒木直哉, 井伊博行, 平田健正, 金子泰純, 平出純一, 川上義之 (Part: Corresponding author )

    水工学論文集   46   2002  [Refereed]

  • Oxygen and Hydrogen Isotopic Ratios and Chemistry in Semiarid Land River Water, Southwest Victoria, Australia.

    井伊博行, SHERWOOD J, STAGNITTI F, TURCOZY N, 平田健正, 西川雅高 (Part: Lead author, Corresponding author )

    土木学会論文集 ( 土木学会 )  719 ( 719 ) 1 - 9   2002  [Refereed]

    DOI

  • Groundwater chemistry near a ten plantation in the center of Shizuoka prefecture, Japan

    TANAKA Toyokazu, II Hiroyuki, HIRATA Tatemasa, NISHIKAWA Masataka, NAKAJIMA Tsugio, UMEHARA Kouichi, OGAWA Yumi (Part: Corresponding author )

    Annual Journal of Hydraulic Engineering, JSCE ( Japan Society of Civil Engineers )  45   355 - 360   2001  [Refereed]

     View Summary

    To investigate the relation between fertilizer and groundwater quality, the well water chemistry near tea plantations was studied. Well waters were classified by the difference of pH value into 3 types. A type is acidic, B type is acidic to neutral and C type is neutral. Average concentrations of NO<SUB>3</SUB>-N and HCO<SUB>3<SUP>-</SUP></SUB> were: A type, 33.8mg/L and 0.1mg/L, B type, 13.1mg/L and 8.2mg/L; C type, 6.9mg/L and 60.0mg/L, respectively. The decrease in pH values was associated with the increase in the concentration of NO<SUB>3</SUB>-N. The concentration of carbonate increased with pH value. Therefore, the decrease of amount of nitrogen fertilization used in tea plantations and the sufficient carbonate were thought to induce rising the pH value. As concentrations of metal in well water increased with decrease in pH value, metal concentrations and pH values were influenced by the use of fertilizer and carbonate.

    DOI

  • Characteristic of river water chemistry in the Yamatogawa basin

    (Part: Corresponding author )

    Annual Journal of Hydraulic Engineering, JSCE   45   985 - 990   2001  [Refereed]

  • Relationship between river water chemistries and Land use in the Kinokawa-river

    KANEKO Hirozumi, II Hiroyuki, HIRATA Tatemasa, FUKUSHIMA Takayuki, EGUSA Nobuyuki, TANIKAWA Hiroki (Part: Corresponding author )

    Annual Journal of Hydraulic Engineering, JSCE ( Japan Society of Civil Engineers )  45   1009 - 1014   2001  [Refereed]

     View Summary

    Soluble substances of the Kinokawa-river increased down the stream. Excluding weathering of limestone, soluble substances in the upper stream of the catchment covered with forest were very low and main components were HCO<SUP>-</SUP><SUB>3</SUB>, SO<SUP>2-</SUP><SUB>4</SUB>, Na<SUP>+</SUP>, and Ca<SUP>2+</SUP>. Soluble substances in the upper stream of the forest catchment with limestone were high and the main components were Ca<SUP>2+</SUP> and HCO<SUP>-</SUP><SUB>3</SUB> Ca<SUP>2+</SUP> and HCO<SUP>-</SUP><SUB>3</SUB> concentrations increased from the upper stream to the middle stream with forest, but Na<SUP>+</SUP>, Cl<SUP>-</SUP> and SO<SUP>2-</SUP><SUB>4</SUB> concentrations remained unchanged because of weathering of limestone and feldspar. In the lower stream of the catchment with farm land and housing site, the concentrations of Na<SUP>+</SUP>, Cl<SUP>-</SUP>, NO<SUP>-</SUP><SUB>3</SUB> and SO<SUP>2-</SUP><SUB>4</SUB> were very high. It was concluded from the relation between land uses and water qualities that Na<SUP>+</SUP> and SO<SUP>2-</SUP><SUB>4</SUB> origin were farmland, and Cl<SUP>-</SUP> origin was sewage respectively, and NO<SUP>-</SUP><SUB>3</SUB> was derived from both origins. Isotopic study of oxygen and hydrogen indicated that the river water originated from precipitation and isotopic ratios depended on mainly precipitation altitude.

    DOI

  • 紀の川の水質特性と土地利用の関係

    金子泰純, 井伊博行, 平田健正, 福島教之, 江種伸之, 谷川寛樹 (Part: Corresponding author )

    水工学論文集   45   1009 - 1014   2001  [Refereed]

    DOI

  • 和歌山県と大阪府における降水中の溶存成分および水素,酸素安定同位体比

    井伊博行, 平田健正, 佐原尚美, 伏井邦彦 (Part: Corresponding author )

    水工学論文集   45   289 - 294   2001  [Refereed]

    DOI

  • 大和川流域における河川水の水質特性について

    窪原拓馬, 井伊博行, 平田健正, 江種伸之, 石塚正秀, 伊勢達男, 宮川勇二 (Part: Corresponding author )

    水工学論文集   45   985 - 990   2001  [Refereed]

    DOI

  • 和泉山地小流域における地表水の水質特性

    石塚正秀, 井伊博行, 堤久行, 平田健正 (Part: Corresponding author )

    水工学論文集   45   1015 - 1020   2001  [Refereed]

    DOI

  • Determination of the abundance of δ<sup>15</sup>N in nitrate ion in contaminated groundwater samples using an elemental analyzer coupled to a mass spectrometer

    Y. Ogawa, M. Nishikawa, O. Nakasugi, H. Ii, T. Hirata

    Analyst ( ROYAL SOC CHEMISTRY )  126 ( 7 ) 1051 - 1054   2001  [Refereed]

     View Summary

    A rapid method for measuring the δ N of nitrate ion in water samples using an isotope ratio mass spectrometer coupled to an elemental analyzer system (EA-MS) was investigated. The water should be removed from the analytical sample before measurement with this system. We investigated the application of a super-absorbent polymer resin powder to various water samples. Each 1 mg of polymer resin powder can absorb about 50-100 mg of solution depending on the concentrations of major ions. Only samples which contain more than 100 mg 1 of nitrate-nitrogen are suitable to be absorbed by the polymer resin for the determination of δ N of nitrate. Preconcentration by rotary evaporation was necessary for dilute samples but the temperature should be kept below 60 °C. The polymer resin (about 8 mg) containing the nitrate was directly analyzed using an EA-MS after being oven-dried at 80 °C. Good accuracy (precision ±0.3‰) for δ N measurements of nitrate-nitrogen in a sample without any isotope fractionation effects during pre-treatment was observed. Results for δ N of nitrate in contaminated groundwater samples collected in the spring at a tea plantation area in Shizuoka, Japan, were from 9.8 to 10.6‰, which were close to the δ N abundance in organic fertilizers. 15 -1 15 15 15 15

    DOI

  • The effect of firtilizing from tea plantation and water conveyance from Oigawa river upon nitrogen contamination in Kikugawa basin, central Shizuoka prefecture.

    山野賢一, 井伊博行, 平田健正, 田中豊和, 西川雅高, 小川裕美 (Part: Corresponding author )

    環境工学研究論文集   38   2001  [Refereed]

  • 静岡県中部地方の茶畑周辺の地下水について

    田中豊和, 井伊博行, 平田健正, 西川雅高, 中島二夫, 梅原こう一, 小川祐美 (Part: Corresponding author )

    水工学論文集   45   355 - 360   2001  [Refereed]

    DOI

  • Texture to decipher growth stage of albite-porphyroblasts in pelitic schists from the Sambagawa metamorphic belt

    Kunihiko Fushi, Hiroyuki Ii (Part: Corresponding author )

    Journal of Mineralogical and Petrological Sciences   96 ( 4 ) 148 - 153   2001  [Refereed]

     View Summary

    Considering textures, chemical analyses and mineral assemblages of the Sambagawa metamorphic rocks, some insight to the growth stage of albite-porphyroblasts was obtained. There are two types of titanite in the pelitic schists studied: 1) minute grains (up to 0.35 mm in length) in the matrix and 2) euhedral coarse grains (up to 0.6 mm in long axis) included in albite porphyroblasts. The minute titanite formed during the prograde stage, because it is a member of the main foliation-forming minerals. It suggests that albiteporphyroblasts crystallized after the titanite had formed. The textures and chemical compositions of garnet suggest that its growth finished near the thermal climax of metamorphism. The euhedral titanites with inclusions of euhedral garnet formed at the culminating stage of metamorphic temperature, therfore the albite porphyroblasts including the euhedral titanites formed during a retrograde stage.

    DOI

  • Analytical Studies on the Relationship between Land Surface Conditions and Outbreak of Aeolian Dust

    MAKI Taichi, YOSHINO Masatoshi, II Hiroyuki, TSUCHIYA Kiyoshi, SUGIHARA Shigehiko

    Journal of arid land studies ( 日本沙漠学会 )  10 ( 3 ) 253 - 256   2000.10  [Refereed]

  • Field Research in the Dust Outbreak Regions for the Undersanding and the Parameteizing of the Dust Erosion Process

    MIKAMI Masao, NAGASHIMA Hideki, ABE Osamu, II Hiroyuki, MAKI Taichi, YAMADA Yutaka

    Journal of arid land studies ( 日本沙漠学会 )  10 ( 3 ) 235 - 237   2000.10  [Refereed]

  • Spring, pond and river water chemistries derived from a tea plantation in central Shizuoka Prefecture

    II H (Part: Corresponding author )

    Annual Journal of Hydraulic Engineering, JSCE   44   1155 - 1160   2000  [Refereed]

  • 静岡県中部地域での茶畑由来の湧水・池水・河川水の水質について

    井伊博行, 平田健正, 田中豊和, 西川雅高, 中島二夫, 梅原こう一 (Part: Corresponding author )

    水工学論文集   44   1155 - 1160   2000  [Refereed]

    DOI

  • 和賀川流域の積雪・河川水・湧水・温泉水の水質について

    窪原拓馬, 井伊博行, 粂川高徳, 長谷部正彦 (Part: Corresponding author )

    水工学論文集   44   1161 - 1166   2000  [Refereed]

    DOI

  • Comparison of the Water Chemistry in the River Basin of Different Land Use and Geologic Structure. The Satsunai and Ishikawa River Basin.

    長谷部正彦, 加藤友美, 粂川高徳, 平田健正, 井伊博行, 江種伸之, 坂本康 (Part: Corresponding author )

    土木学会論文集 ( 土木学会 )  663 ( 663 ) 131 - 136   2000  [Refereed]

  • Temporal moments analysis of preferential solute transport in soils

    F Stagnitti, G Allinson, M Morita, M Nishikawa, H Ii, T Hirata (Part: Corresponding author )

    ENVIRONMENTAL MODELING & ASSESSMENT ( BALTZER SCI PUBL BV )  5 ( 4 ) 229 - 236   2000  [Refereed]

     View Summary

    Temporal moments analysis of solute breakthrough curves is used to investigate the preferential leaching of chloride, nitrate and phosphate trough an Australian soil. Recent studies have shown that current models and methods do not adequately describe the leaching of nutrients through soil, often underestimating the risk of groundwater contamination by surface-applied chemicals, and overestimating the concentration of resident solutes. This inaccuracy results primarily from ignoring soil structure and nun-equilibrium between soil constituents, watts and solutes. Therefore simple models are required to accurately characterise solute transport in natural and agricultural soils under non-equilibrium conditions. A multiple sample percolation system, consisting of 25 individual collection wells was constructed to study. the effects of localised soil heterogeneities on the transport of nutrients (NO3-, Cl-, PO43-) in the vadose zone of an agricultural soil predominantly dominated by clay. Using data collected from the multiple sample percolation experiments, this paper compares and contrasts the performance of temporal moments analysis with two mathematical models for predicting solute transport: the advective-dispersion model with a reaction term (ADR) and a two-region preferential flow model (TRM) suitable for modelling preferential transport. The values for solute transport parameters predicted by temporal moments analysis were in excellent agreement with experimental data and results from ADR and TRM. It is concluded that temporal moments analysis when applied with other physical models such as the ADR and TRM, provide an excellent means of obtaining values for important solute transport parameters and gaining insight of preferential flow. These results have significant ramifications for modelling solute transport and predicting nutrient loadings.

    DOI

  • Water chemistry of snow, river, spring and hot spring in the Wagagawa basin

    (Part: Corresponding author )

    Annual Journal of Hydraulic Engineering, JSCE   44   1161 - 1166   2000  [Refereed]

  • The effect of land use upon river water chemistry. The ishi river basin in osaka prefecture.:THE ISHI RIVER BASIN IN OSAKA PREFECTURE

    HIRATA Tatemasa, II Hiroyuki, HASEBE Masahiko, EGUSA Nobuyuki, SAKAMOTO Yasushi, KUMEKAWA Takanori, NISHIYAMA Koji, SAKAI Nobuyuki, IWASAKI Hirokazu

    Doboku Gakkai Ronbunshu ( Japan Society of Civil Engineers )  614 ( 614 ) 97 - 107   1999.02  [Refereed]

     View Summary

    It was determined by oxygen isotopic and chemical composition analysis that most of the rainfall which fell in the upper stream of the Ishi river basin did not run off directly but rather ran off after it had infiltrated into the ground. Therefore, in the Ishi river basin upper stream, no remarkable change in water quality occurred even despite fluctuations in rainfall amounts. However water quality was changed by types of land use. The sulfur of SO<sub>4</sub><sup>2-</sup> found in the upper stream water was estimated by sulfur isotopic ratios to have mainly come from the Izumi formation. The Ca<sup>2+</sup> and HCO<sub>3</sub><sup>-</sup> found in the upper stream water were thought to have come from CO<sub>2</sub> gas and feldspar contained within the soil of the forests during weathering. Ca<sup>2+</sup>, HCO<sub>3</sub><sup>-</sup>, NO<sub>3</sub><sup>-</sup> and SO<sub>4</sub><sup>2-</sup> of river water in orchards and rice fields were thought to have come from fertilizer. The Na<sup>+</sup>, Cl<sup>-</sup>, Ca<sup>2+</sup>, HCO<sub>3</sub><sup>-</sup>, NO<sub>3</sub><sup>-</sup> and SO<sub>4</sub><sup>2-</sup> found in the river water of housing sites were thought to have derived from sewage.

    DOI

  • 環境同位体及び化学組成からみた石川流域の河川水と地下水の起源について

    井伊博行, 平田健正, 長谷部正彦, 江種伸之, 坂本康, 粂川高徳, 西山幸治, 酒井信行, 堀井壮夫 (Part: Corresponding author )

    水工学論文集   43   205 - 210   1999  [Refereed]

    DOI

  • River Water and groundwater origin in the ishikawa basin using stable isotope and chemical composition

    II H. (Part: Corresponding author )

    Annual Journal of Hydraulic Engineering, JSCE   43   205 - 210   1999  [Refereed]

  • Dispersion Coefficients of Unsaturated Sand Determined by Salt Accumulation Analysis (Proceedings of the International Conference on Desert Technology 4) -- (New Technologies for the Rehabilitation of Arid Areas)

    Ii Hiroyuki, Hirata Tatemasa, Kawamura Ryuji (Part: Lead author, Corresponding author )

    Journal of arid land studies ( 日本沙漠学会 )  7   281 - 284   1998.03  [Refereed]

  • Water chemistry and land use neighboring Matsumoto City.

    井伊博行, 平田健正, 加々美久夫

    水工学論文集   42   373 - 378   1998  [Refereed]

    DOI

  • A study on investigation of water cycle process in the Ishikawa River.

    長谷部正彦, 平田健正, 井伊博行, 坂本康, 江種伸之, 粂川高徳, 西山幸治, 斉藤信彦, 生天目実一 (Part: Corresponding author )

    水工学論文集   42   1998  [Refereed]

  • pH and Chemistry of Nitrogen, Phosphate, Sulfar and Aluminum in Surface Water Near Tea Plantation.

    井伊博行, 平田健正, 松尾宏, 田瀬則雄, 西川雅高

    土木学会論文集 ( 土木学会 )  594 ( 594 ) 57 - 63   1998  [Refereed]

    DOI

  • Headwater and pond water chemistry, particularly concentration of NO3- and delta N-15 values, neighboring a tea plantation in Japan

    H Ii, T Hirata, H Matsuo, M Nishikawa, N Tase

    HEADWATERS: WATER RESOURCES AND SOIL CONSERVATION ( A A BALKEMA PUBLISHERS )    139 - 146   1998  [Refereed]

     View Summary

    Low pH value spring water, originating from a tea plantation, contained, high concentrations of NO, and phosphorous originating from fertilizer. Photosynthesis and denitrification caused the pH value of a nearby pond to remain above 7 despite the influx of acidic spring water. High phosphorus concentrations in the pond were thought to induce very active photosynthesis. However, when phosphorus concentrations in the pond were low, photosynthesis was not active. As a result, denitrification which continued all year in the pond caused NO3- elimination and overall maintenance of high pH levels.

  • Surface water chemistry, particularly concentrations of NO<inf>3</inf>/<sup>-</sup> and DO and δ<sup>15</sup>N values, near a tea plantation in Kyushu, Japan

    Hiroyuki Ii, Tatemasa Hirata, Hiroshi Matsuo, Masataka Nishikawa, Norio Tase (Part: Lead author, Corresponding author )

    Journal of Hydrology ( ELSEVIER SCIENCE BV )  202 ( 1-4 ) 341 - 352   1997.12  [Refereed]

     View Summary

    To investigate the influence of chemical fertilizers on drinking water neighboring tea plantations in Kyushu, Japan, time series of chemical concentrations and nitrogen isotopic ratios within local ponds were studied. Results indicated that the main dissolved components of spring and river water originating from a tea plantation catchment were Ca , Mg , NO / , and SO / . Furthermore, pH values were below 7 due to plantation soil enrichment using nitrogen fertilizers and calcium and magnesium carbonates. Although acidic spring water flowed into a local pond, the pH value of the pond water remained mostly above 7. Occasionally, excessive spring water influx after heavy rains caused the pond water pH to dip below 7. The pond water showed temporal variations of pH ranging over 4 orders of magnitude within a 3-4 month period. The increase in pH values within the pond was associated with an increase in dissolved oxygen (DO) and δ N values and the partial disappearance of NO / . This is explained by nitrogen assimilation and production of oxygen during photosynthesis by algae. 2+ 2+ - 2- 15 - 3 4 3

    DOI

  • Development of an apparatus to measure groundwater qualities in situ and to sample groundwater using boreholes

    Hiroyuki Ii, Yoshihiro Horie, Takashi Ishii, Jun Shimada (Part: Lead author, Corresponding author )

    Environmental Geology   32 ( 1 ) 17 - 22   1997.07  [Refereed]

     View Summary

    To accurately measure the pH, Eh, EC and temperature of groundwater retrieved from boreholes, a deep groundwater sampling apparatus was developed which provided sensory measurements both in situ and in a flow-through cell at ground level. Under a pressure of 1 x 10 Pa the in situ accuracy of the apparatus sensor was within the following limits: pH ± 0.2, temperature ± 0.1°C, Eh ± 10 mV, and EC ± 2.4%. The measuring and sampling of deep groundwater from a borehole of more than 1000 m in depth was performed continuously for 30 days. Values of pH were the same for the in situ sensor, the flow-through cell sensor and the laboratory measurements of the sampled water. At the beginning of the sampling period, Eh values of the in situ sensor indicated deep groundwater conditions. The apparatus is particularly useful for Eh measurement. Chemical composition and stable isotope ratios indicated that the groundwater sampled from more than 1000 m depth was a connote water with a chemical composition slightly different from seawater of the present time, and the groundwater retrieved from 800 m depth was a meteoric water. Natural radioactive elements are thought to be the origin of the tritium in the groundwater retrieved from the 1000 m depth. 6

    DOI

  • Groundwater level and chemistry changes resulting from tunnel construction near Matsumoto City, Japan

    H. Ii, H. Kagami (Part: Lead author, Corresponding author )

    Environmental Geology   31 ( 1-2 ) 76 - 84   1997.05  [Refereed]

     View Summary

    Before tunnel construction began, the groundwater chemical compositions and levels around the tunnel were studied to determine if water compositions could predict whether surface water will be influenced by tunnel construction. When the chemical composition of the well and spring-water was similar to that of the tunnel seepage water, and the altitude of the well and spring was above the tunnel level, the groundwater level in the well and spring was influenced by draining tunnel seepage water. Therefore, comparing the chemical compositions of surface water and groundwater may be used for predictive purposes. However, the results of this study showed there was no noticeable chemical composition change in springwater prior to changes in groundwater level at a particular site. The changes in the hydrology of the plateau caused by tunnel construction were also studied, using measurements of the changes in groundwater chemistry as well as changes in groundwater levels. Prior to tunnel construction, river discharge was greater. Following tunnel construction, some river discharge decreased because springwater was drained as tunnel seepage water and the spring in the catchment dried up. Tritium concentration indicated that 3 years after tunnel construction, surface water did not reach tunnel levels in spite of groundwater level lowering and remaining unconfined groundwater being drained.

    DOI

  • Salt Accumulation Analysis for Column Experiment Results during Eevaporation.

    大塚義之, 井伊博行, 榊原晋 (Part: Lead author, Corresponding author )

    沙漠研究 ( 日本沙漠学会 )  6 ( 2 ) 115 - 120   1997  [Refereed]

  • Nitrate nitrogen due to fertilizer application to tea plantation and its effect on ambient surface water.

    井伊博行, 平田健正, 松尾宏, 田瀬則雄, 西川雅高 (Part: Lead author )

    水工学論文集   41   575 - 580   1997  [Refereed]

    DOI

  • Soil Erosion in the Loess Plateau and Nitrogen Compounds in Dust.

    井伊博行, 平田健正 (Part: Lead author, Corresponding author )

    沙漠研究 ( 日本沙漠学会 )  7 ( 2 ) 175 - 180   1997  [Refereed]

  • Oil Contamination of Soil and Groundwater in Kuwait and Tracer Tests in the Matsumoto Jyoyama Tunnel.

    井伊博行 (Part: Lead author, Corresponding author )

    土壌の物理性 ( 土壌物理学会 )  ( 74 ) 69 - 78   1996.07  [Refereed]

  • Effective porosity and specific yield of a sedimentary rock determined by a field tracing test using tritium as a tracer

    H Ii, Y Ohtsuka, N Mori, T Inagaki, S Misawa (Part: Lead author, Corresponding author )

    ENVIRONMENTAL GEOLOGY ( SPRINGER VERLAG )  27 ( 3 ) 170 - 177   1996.04  [Refereed]

     View Summary

    Effective porosity value was analyzed from the tritium concentration of sampled groundwater using a three-dimensional groundwater-flow and advection-dispersion code based on the finite element method. The effective porosity value was about 10%. Porosity values measured from core samples were 7-15%. The groundwater flow velocity estimated from the tritium concentrations was about 1 x 10(-5) cm s(-1). Therefore, during the low groundwater flow velocity condition, effective porosity and porosity values were the same. At the same test site, a 0.48% effective porosity value, determined by another tracer test injecting Br- solution into the aquifer during groundwater level change, was smaller than the porosity value when the flow velocity was 1.8 x 10(-2) cm s(-1). Thus the effective porosity value is concluded to be due to groundwater flow velocity. The specific yield value was calculated to be 0.6% by the total volume of tunnel seepage water and the total volume of the rock unsaturated during tunnel construction. However, as pore water continued to be drained after the groundwater level change was completed, the specific yield value became larger than 0.6%. Thus specific yield value is concluded to be due to drainage time.

  • Effective porosity and specific yield of a sedimentary rock determined by a field tracing test using tritium as a tracer

    H. Ii, Y. Ohtsuka, N. Mori, T. Inagaki, S. Misawa (Part: Lead author, Corresponding author )

    Environmental Geology ( Springer Verlag )  27 ( 3 ) 170 - 177   1996.04  [Refereed]

     View Summary

    Effective porosity value was analyzed from the tritium concentration of sampled groundwater using a three-dimensional groundwater-flow and advection-dispersion code based on the finite element method. The effective porosity value was about 10%. Porosity values measured from core samples were 7-15%. The groundwater flow velocity estimated from the tritium concentrations was about 1 × 10 cm s . Therefore, during the low groundwater flow velocity condition, effective porosity and porosity values were the same. At the same test site, a 0.48% effective porosity value, determined by another tracer test injecting Br solution into the aquifer during groundwater level change, was smaller than the porosity value when the flow velocity was 1.8 × 10 cm s . Thus the effective porosity value is concluded to be due to groundwater flow velocity. The specific yield value was calculated to be 0.6% by the total volume of tunnel seepage water and the total volume of the rock unsaturated during tunnel construction. However, as pore water continued to be drained after the groundwater level change was completed, the specific yield value became larger than 0.6%. Thus specific yield value is concluded to be due to drainage time. -5 -1 - -2 -1

    DOI

  • On the Performance of Salt Capturing Devices Affected with Atmospheric Environments and Soil Textures.

    山口智治, 安部征雄, 横田誠司, 大塚義之, 井伊博行 (Part: Corresponding author )

    農業施設 ( 農業施設学会 )  27 ( 3 ) 111 - 119   1996  [Refereed]

  • Tracing the Movement during Evaporation of Salt Water Through a Sand Layer and Solid Paper Core Using Three Different Anions as Tracers

    II Hiroyuki, OHTSUKA Yoshiyuki, OGAWA Tetsuo, ABE Yukuo, YAMAGUCHI Tomoharu (Part: Lead author, Corresponding author )

    Journal Arid Land Study   5 ( 1 ) 33 - 42   1995.11  [Refereed]

  • Evaporation Effect of a Salt Capturing Stick and Its Influence on Movement of Solution and Solute in Soil

    ABE Yukuo, TSURUI Jun, YAMAGUCHI Tomoharu, OHTSUKA Yoshiyuki, II Hiroyuki (Part: Corresponding author )

    Journal of Arid Land Study   5 ( 1 ) 43 - 54   1995.11  [Refereed]

  • Effective porosity and longitudinal dispersivity of sedimentary rocks determined by laboratory and field tracer tests

    H. Ii (Part: Lead author, Corresponding author )

    Environmental Geology ( Springer-Verlag )  25 ( 2 ) 71 - 85   1995.03  [Refereed]

     View Summary

    We performed two field tracer tests in Tertiary sedimentary rocks and laboratory tracer tests using core samples of the sedimentary rock and bentonite and quartz sand mixtures. We have estimated effective porosity and longitudinal dispersivity, which are essential to the evaluation of mass transport in groundwater. The results of these tests indicate that test scale should be considered in the evaluation of effective porosity and longitudinal dispersivity. As the test scale increases, effective porosity decreases and longitudinal dispersivity increases. The relationship may be useful for estimating mass transport in groundwater. From the laboratory scale to the field scale, the decrease in effective porosity and increase in longitudinal dispersivity may be due to the existence of cracks or fissures. At the laboratory scale, the decrease in effective porosity is probably due to a loss of connectivity of continuous pores. © 1995 Springer-Verlag.

    DOI

  • Groundwater chemistry within a plateau neighboring Matsumoto city, Japan

    H. Ii, S. Misawa (Part: Lead author, Corresponding author )

    Environmental Geology ( Springer-Verlag )  24 ( 3 ) 166 - 175   1994.11  [Refereed]

     View Summary

    The change in groundwater chemistry along the groundwater flow path in the Matsumoto tunnel vicinity was studied, and the origin of the groundwater and dissoluted substances was determined. The relationship between the concentration of HCO , Ca , and Na , and CO gas pressure in the groundwater indicated that the HCO , Ca , and Na were produced by the reaction of the CO gas in the groundwater and feldspar in the rocks. The relationship between the concentration of NO and the Eh and pH values in the groundwater indicated that in an oxidative condition, ammonia-oxidizing and nitriteoxidizing bacteria used NH and produced NO and H , and in a reductive condition, denitrifying bacteria used NO and produced N gas and OH . The stable hydrogen and oxygen isotopic ratio in the groundwater and precipitation indicated that the groundwater originated from precipitation that had fallen on the area. The concentration of H and the stable hydrogen and oxygen isotopic ratios in the groundwater suggested that it has been getting warmer climatically for more than 60 years. The stable carbon isotopic ratio indicated that the HCO in the groundwater, excluding deep well water, originated from CO gas produced by organic matter in the soil. The deep well water, which had a higher concentration of HCO than the other groundwater sampled, was thought to have acquired HCO though contact with rocks. The Cl/Cl ratio indicated the recharge age of the deep well water sampled at a depth of 760 m at the foot of the plateau was recent. © 1994 Springer-Verlag. 3 2 3 2 3 4 3 3 2 3 2 3 3 - 2+ + - 2+ + - + - + - - 3 - - - 36

    DOI

  • The Groundwater Chemistry of the Matsumoto Tunnel and Surrounding Area.

    井伊博行, 三沢伸也 (Part: Lead author, Corresponding author )

    地下水学会誌 ( 日本地下水学会 )  36 ( 1 ) p13 - 29   1994.02  [Refereed]

  • Dispersion coefficient and effective porosity of a sedimentary rock by a field tracer test.

    井伊博行, 石川泰, 杉原弘造, 櫨田吉造

    地下水学会誌 ( 日本地下水学会 )  35 ( 1 ) p23 - 36   1993.02  [Refereed]

    DOI

  • ペーパーロールを用いた土壌の塩類捕集方法に関する実験的研究

    井伊博行

    沙漠研究   3   1 - 7   1993  [Refereed]

  • Estimation of scale effect on effective porosity and longitudinal dispersivity of a Tertiary sedimentary rock by laboratory tracer tests and a field tracer test.(共著)

    Hiroyuki Ii (Part: Lead author, Corresponding author )

    International Association of Hydrogeologists   4   153 - 162   1993  [Refereed]

  • Poughite, Frohbergite and Melonite from the Kobetsuzawa Mine, Sapporo, Hokkaido.

    井伊博行, 岡田昭彦 (Part: Lead author, Corresponding author )

    鉱物学雑誌 ( 日本鉱物学会 )  20 ( 3 ) p89 - 92   1991.07  [Refereed]

▼display all

Books etc

  • Threats to Springs in a Changing World: Science and Policies for Protection

    Hiroyuki ii( Part: Contributor,  Work: Chapter 5 Nitrogen Contamination and Acidification of Groundwater Due to Excessive Feartilizer Use for Tea Plantations)

    AGU (Advacing Earth and Space Science) Geophysical Monograph Series, John Wiley & Sons, Inc.  2022.11  ISBN: 9781119818595

  • Water Environment Diagram of Kinokawa River Plain

    Isao Machida, Hiroyuki ii( Part: Joint author,  Work: Water quality of groundwater)

    Geological Survay of Japan  2021.02 

  • 日本の水環境 5 近畿編

    技報堂出版  2000 

  • 沙漠工学

    森北出版(株)  1999 

  • 建設のニューフロンティア構想と先端材料

    大浜, 嘉彦, 三橋, 博三, 井伊, 博行

    技報堂出版  1995.06  ISBN: 4765524183

  • Geological Basis for Radioactive Waste Disposal

    1995 

  • 放射性廃棄物と地質科学 地層処分の現状と課題(共著)

    東京大学出版会  1995 

  • 沙漠物語(共著)

    森北出版会  1994 

▼display all

Misc

  • 紀の川の水環境 紀の川の概要

    井伊博行 (Part: Lead author, Corresponding author )

    水環境学会誌   40(A) ( 7 ) 216 - 219   2017  [Refereed]  [Invited]

  • 休廃止鉱山を対象とした地下水流動のモデル化に関する研究

    富山眞吾, 井伊博行, 五十嵐敏文

    資源・素材学会春季大会(Web)   2017   2017  [Refereed]

  • Cu, Zn and As pollution of river insect, plant and water along the metal mine tailing in Waidani area, Okayama prefecture, Japan

    Hiroyuki Ii, Shota Kumano, Akio Nishida (Part: Corresponding author )

    International Conference on Marine and Freshwater Environments, iMFE 2014     2014  [Refereed]

     View Summary

    Comparing metal concentration and distribution for river insect larva in metal contaminated and not contaminated areas, dobsonfly was clarified to be an effective indicator for metal contamination. The Waidani area was selected as metal contaminated area. Although the maximum concentration of effluent for Cu, Zn and As was 0.18, 1.5 and 0.07 mg/l, under the Japanese Effluent Standard, the maximum metal load for Cu, Zn and As reached 35, 250 and 9 kg per year, abundant of Japanese diving beetles, were only found and then specialized condition was thought to be made by the effluent. Cu, Zn and As concentrations of dobsonfly and the other river insect larva were measured in the mine areas including the Waidani mine, limestone area and not contaminated area. Dobsonfly, just one specie, Protohermes grandis, was able to cover wide concentration range for Cu (several 10 to several 1000 ppm), Zn (several 100 to several 1000 ppm) and As (0.000 to 400 ppm) and had a wide distribution. Then, its concentration was depended on metal contamination. Although the other insects had wide concentration ranges and wide distributions as well as dobsonfly, they have many kinds of species. Therefore, their concentration did not depend on metal contamination but also species.

  • 釧路湿原における湧水帯の推定及び水質による池沼等の類型化

    土原健雄, 井伊博行, 吉本周平, 石田聡

    日本地下水学会講演会講演予稿   2014   2014

  • 河川生態系における地質・水質と底生動物相との関係

    西田昭夫, 井伊博行

    日本陸水学会大会講演要旨集   78th   2013

  • 高濃度の亜鉛を含む鉱山酸性排水の海辺生物への影響評価

    井伊博行

    環境助成研究成果 概要集 第32回・2011年度助成分:29件 第31回・2010年度助成分:4件 平成25年     2013

  • 水収支解析システムを用いた台風12号の河川流出量の解析

    谷口正伸, 井伊博行, 平田健正

    日本水環境学会年会講演集   46th   2012

  • 水資源量の算定の自動化に関する研究奈良盆地の水収支について—The development of water resource system : The Water balance of Yamato River Baisin

    谷口 正伸, 井伊 博行, 平田 健正

    環境工学研究論文集 = Environmental research / 土木学会環境工学委員会 編 ( 土木学会 )  48   Ⅲ_327 - 334   2011

  • 大和川の地下水量の解析

    谷口正伸, 井伊博行, 平田健正

    日本地下水学会講演会講演要旨   2011   2011

  • トンネル掘削による台地地下水の長期(20年以上)排水実験

    井伊博行

    日本地下水学会講演会講演要旨   2011   2011

  • Modeling of groundwater recharge, discharge and water chemistry in Tomitaka mine, Miyazaki Prefecture

    tomiyama shingo, yamaguchi kohei, ueda akira, ii hiroyuki, aikawa yoshio, metsugi hideya, koizumi yukiko, kitai akiko

    Abstracts of Annual Meeting of the Geochemical Society of Japan ( GEOCHEMICAL SOCIETY OF JAPAN )  58th ( 0 ) 186 - 186   2011

     View Summary

    In the Tomitaka abandoned mine, mine drainage containing arsenic has drained into the sea without any processing and a neutralizing process is discussed to be necessary. The geochemical model is built based on the conceptual. As the result is nearly consistent with the measured value, the conceptual model is thought to be moderate.

    DOI

  • Salinization of the Glenelg River in Southwest Victoria, Australia

    Hiroyuki Ii, John Sherwood, Nick Turoczy

    INTERNATIONAL ASSOCIATION OF THEORETICAL AND APPLIED LIMNOLOGY, VOL 30, PT 10, PROCEEDINGS ( E SCHWEIZERBART'SCHE VERLAGSBUCHHANDLUNG )  30   1515 - +   2010

  • Analysis of organic nitrogen compound in domestic sewage in Yamato River using a social experimental test

    Masanobu Taniguchi, Hiroyuki Ii, Tatemasa Hirata

    INTERNATIONAL ASSOCIATION OF THEORETICAL AND APPLIED LIMNOLOGY, VOL 30, PT 10, PROCEEDINGS ( E SCHWEIZERBART'SCHE VERLAGSBUCHHANDLUNG )  30   1587 - 1590   2010  [Refereed]

  • 大滝ダム周辺の水質の特性

    江川由記, 井伊博行

    日本地下水学会講演会講演要旨   2010   2010

  • 酸素・水素安定同位体比を用いた北海道釧路湿原の湧水起源の推定

    山口甫健, 井伊博行, 谷口正伸, 今泉眞之, 土原健雄

    日本地下水学会講演会講演要旨   2010   2010

  • 海外レポート カナダ報告(3)始生代の金鉱床--カークランドレイク(Kirkland Lake)金鉱床

    井伊 博行

    水晶quartz ( 鉱物同志会 )  20 ( 20 ) 11 - 16,1   2009.12

  • 釧路湿原内の河川・池塘・湧水の水質及び同位体分布特性

    土原健雄, 吉本周平, 石田聡, 皆川裕樹, 今泉眞之, 井伊博行

    日本雨水資源化システム学会研究発表会講演要旨集   17th   2009

  • 酸素・水素安定同位体比による北海道東部の水循環の推定と水質特性

    山口甫健, 井伊博行, 谷口正伸

    土木学会年次学術講演会講演概要集(CD-ROM)   64th ( Disk 1 )   2009

  • 水素・酸素安定同位体を用いた地下水起源の推定

    富山眞吾, 井伊博行, 上原倫子, 田嶌修, 伊藤勇二

    分析化学討論会講演要旨集   70th   2009

  • 紀ノ川中流から下流域における環境変化が及ぼす水質と植物プランクトンへの影響

    河西正樹, 井伊博行

    土木学会年次学術講演会講演概要集(CD-ROM)   64th ( Disk 2 )   2009

  • 湿原流域の変容の監視手法の確立と生態系修復のための調和的管理手法の開発

    神山和則, 藤原英司, 丸谷薫, 高清水康博, 井伊博行, 橘治国, 松本武彦, 酒井治, 八木哲生, 冨士田裕子, 加藤邦彦, 小林創平, 土原健雄, 中矢哲郎, 野原精一, 広木幹也, 林誠二

    環境保全研究成果集(CD-ROM)   2009   2009

  • 蒸発における水の酸素・水素同位体比の変化について

    宮原啓, 井伊博行, 宮路和葉

    土木学会年次学術講演会講演概要集(CD-ROM)   64th ( Disk 1 )   2009

  • オーストラリア,メルボルンにおける乾燥化と高濃度溶存イオンについて

    佐藤中, 井伊博行, 谷口正伸

    土木学会年次学術講演会講演概要集(CD-ROM)   64th ( Disk 2 )   2009

  • 和歌山県の鉱山遺跡の実態-鉱山遺跡の野外ミュージアムとしての可能性について-

    井伊博行

    日本産業教育学会大会研究発表要旨集   49th   2008

  • 湿原流域の変容の監視手法の確立と生態系修復のための調和的管理手法の開発

    神山和則, 藤原英司, 丸谷薫, 高清水康博, 井伊博行, 橘治国, 松本武彦, 酒井治, 八木哲生, 冨士田裕子, 加藤邦彦, 小林創平, 土原健雄, 中矢哲郎, 野原精一, 広木幹也, 林誠二

    環境保全研究成果集(CD-ROM)   2008   2008

  • 海外レポート カナダ報告(2)オンタリオ州、コバルトの銀

    井伊 博行

    水晶quartz ( 鉱物同志会 )  19 ( 19 ) 32 - 37   2007.07

  • (財)日本地下水理化学研究所コーナー 乾燥地の塩害--地下水塩分の集積

    井伊 博行

    地下水技術 ( 地下水技術協会 )  49 ( 2 ) 21 - 28   2007.02

  • Actions of PO<SUB>4</SUB><SUP>3</SUP><SUP>-</SUP>, Fe<SUP>2</SUP><SUP>+</SUP> and Al<SUP>3</SUP><SUP>+</SUP> of surface water in the region of the Inawashiro Lake

    OKADA Satoshi, II Hiroyuki, NAGABAYASI Hisao, YAMADA Syouko

    PROCEEDINGS OF HYDRAULIC ENGINEERING ( Japan Society of Civil Engineers )  51   1367 - 1372   2007

     View Summary

    Hot spring in the Inawashiro lake catchment contained high concentrations of Fe and Al ions and carried them down the stream. Fe and Al ions reached 40 and 55 mg/l respectively. However, most of Fe and Al ions were gradually precipitated with oxidation and increase of pH. As the same time, PO<SUB>4</SUB><SUP>3</SUP><SUP>-</SUP>in the river and the lake was thought to be precipitated as Fe and Al phosphates. In particular, Fe ions in the Nagase River were thought to be precipitated as Fe (OH) <SUB>3</SUB> down the stream and then the deposit contained phosphorus. When the Nagase River flowed into the Inawashiro lake, Al ions change to Al (OH) <SUB>3</SUB> and Al (OH) <SUB>3</SUB> was thought to be precipitated with phosphorus in the lake. Therefore, PO<SUB>4</SUB><SUP>3</SUP><SUP>-</SUP> concentration was thought to be very low in the Inawashiro lake although the catchment was contaminated by fertilizer from rice field, orchard and house sewage.

    DOI

  • 静岡市の丘陵地茶畑における地下水水質の深度変化

    福岡芳枝, 井伊博行, 谷口正伸

    土木学会年次学術講演会講演概要集(CD-ROM)   62nd ( Disk 2 )   2007

  • 湧水の復活と保全の方策

    井伊博行

    日本水環境学会シンポジウム講演集   10th   2007

  • 猿谷ダムにおける栄養塩と植物プランクトンの季節変化

    岩根良和, 寺本健士, 井伊博行, 平田健正

    土木学会年次学術講演会講演概要集(CD-ROM)   61st ( Disk 1 )   2006

  • 酸素・水素安定同位体比及びトリチウムを用いた釧路湿原湧水涵養域の推定

    土原健雄, 井伊博行, 石田聡, 今泉眞之

    アイソトープ・放射線研究発表会要旨集   43rd   2006

  • 安定同位体比及び放射性同位体からみた釧路湿原内湧水の起源

    土原健雄, 井伊博行, 石田聡, 今泉眞之

    農業土木学会大会講演会講演要旨集   2006   2006

  • 茶園地帯における窒素負荷量の把握及び水収支・窒素収支調査事例

    手塚裕樹, 土隆一, 西川雅高, 平田健正, 井伊博行

    地下水・土壌汚染とその防止対策に関する研究集会講演集(CD-ROM)   12th   2006

  • オーストラリア,ビクトリア州南西部の乾燥地河川における塩水化

    登立公平, 北野梓沙, 井伊博行

    土木学会年次学術講演会講演概要集(CD-ROM)   61st ( Disk 1 )   2006

  • 採集レポート カナダ報告1 オンタリオ州サドベリー、バーミリオン鉱山のスペリー鉱

    井伊 博行

    水晶quartz ( 鉱物同志会 )  17 ( 17 ) 54 - 57   2005.06

  • (財)日本地下水理化学研究所コーナー 地下水の硝酸性窒素汚染起源推定の新指標

    井伊 博行

    地下水技術 ( 地下水技術協会 )  47 ( 1 ) 16 - 21   2005.01

  • 窒素同位体と負荷量解析による大和川の生活排水起源の有機物分解について

    井伊 博行, 平田 健正, 西川 雅高

    土木学会 河川技術論文 11     35 - 40   2005

  • Water and material circulation in catchment area

    井伊 博行

    Advance in River Engineering Vol.11     7 - 12   2005

  • Decompose process of sewage organic material using nitrogen isotope and load analyze in Yamato river

    井伊 博行

    Advance in River Engineering Vol.11     35 - 40   2005

  • Character of COD values with flow rate clarified by one hour automatic measurement in the Yamatogawa river

    井伊 博行

    Annual Journal of hydraulic Engineering, JSCE Vo.49     1513 - 1518   2005

  • Effect of Natural remediation of river, private sewage system and sewage disposal plant on water quality of Yamato river, central Japan

    井伊 博行

    6^<th> International Conference, European water Resource association (Proceeding) (CD-ROM)     2005

  • Effect of natural remediation of river, private sewage system and sewage disposal plant on water quality of Yamato river, central Japan

    井伊 博行

    6th International Conference, European Water Resources Association CD-ROM     2005

  • 流域の水と物質循環

    井伊 博行

    河川技術論文集(土木学会) 11     7 - 12   2005

  • Estomation of BOD loads considering water temperature in the Yamato river Catchments

    井伊 博行

    Annual Journal of hydraulic Engineering, JSCE Vo.49     1555 - 1560   2005

  • 紀ノ川大堰上流におけるケイ素を含む栄養塩と植物プランクトンの変化に関する研究

    石塚正秀, 寺本健士, 紺野雅代, 井伊博行, 平田健正

    土木学会年次学術講演会講演概要集(CD-ROM)   60th ( Disk 1 )   2005

  • 茶園地帯における硝酸性窒素による土壌・地下水汚染機構解明調査事例

    手塚裕樹, 土隆一, 西川雅高, 平田健正, 井伊博行

    地下水・土壌汚染とその防止対策に関する研究集会講演集(CD-ROM)   11th   2005

  • 槙尾川流域による定点観測から予測される大津川水系の水質特性

    横田恭平, 井伊博行, 平田健正

    土木学会年次学術講演会講演概要集(CD-ROM)   60th ( Disk 1 )   2005

  • 紀ノ川大堰上流における一年を通じた水中の粒子性・溶解性物質の変動

    石塚正秀, 寺本健士, 紺野雅代, 井伊博行, 平田健正

    土木学会関西支部年次学術講演会講演概要集(CD-ROM)   2005   2005

  • 1時間毎の自動観測測定から導き出された新たなCODの流量依存特性

    井伊博行, 高野芳隆, 石塚正秀, 平田健正

    土木学会年次学術講演会講演概要集(CD-ROM)   60th ( Disk 1 )   2005

  • Estimation of Origin of Tunnel Seepage by Environmental Isotopes and River Flow Rate in Sobu Tunnel, Central Japan.

    Ii, H, Goto, D, Hirata, T, Yoshikuni, T, Ohtuka, Y, Kanagawa, M

    58th Canadian Geotechnical Conference and 6th Joint CGS and IAH-CNC Groundwater Specialty Conference, CD-ROM     2005

  • Changes of substances derived from domestic sewage in Yamato river basin

    井伊 博行

    Annual Journal of hydraulic Engineering, JSCE Vo.48     1465 - 1470   2004

  • 大和川の生活排水起源物質の水質変化

    井伊 博行, 平田 健正, 石塚 正秀

    土木学会 水工学論文集 48     1465 - 1470   2004

  • 奈良盆地降水の水素・酸素安定同位体比季節変動と短時間変動

    町田泉, 井伊博行, 平田健正

    土木学会年次学術講演会講演概要集(CD-ROM)   59th ( Disk 1 )   2004

  • 茶畑での土壊浸透水モニタリングによる硝酸性窒素等の動態

    手塚裕樹, 市川加代子, 土隆一, 西川雅高, 平田健正, 井伊博行

    地下水・土壌汚染とその防止対策に関する研究集会講演集   10th   2004

  • トンネル湧水と周辺の沢水・降水の関連性の解明

    後藤大輔, 井伊博行, 平田健正

    土木学会年次学術講演会講演概要集(CD-ROM)   59th ( Disk 1 )   2004

  • 山岳トンネル工事は大規模排水実験

    井伊博行

    地下水技術   46 ( 2 )   2004

  • 逆様池はなぜ貧栄養池なのか

    室賀英治, 井伊博行, 平田健正

    土木学会年次学術講演会講演概要集(CD-ROM)   59th ( Disk 1 )   2004

  • 窒素肥料汚染による酸性土壌水の移動特性

    井伊博行, 久堀泰佑, 石塚正秀, 平田健正

    土木学会年次学術講演会講演概要集(CD-ROM)   59th ( Disk 2 )   2004

  • 足尾の銅鉱床の成因について (足尾銅山特集号)

    井伊 博行

    水晶quartz ( 鉱物同志会 )  16 ( 1 ) 19 - 30   2003.12

  • Assessment of Water Quality using GIS in Tea Cultivated River Basin

    OGAWA Yumi, NAKASUGI Osami, NISIKAWA Masataka, II Hiroyuki, HIRATA Tatemasa

    Environmental science ( 環境科学会 )  16 ( 3 ) 155 - 166   2003.05

  • (財)日本地下水理化学研究所コーナー 足尾の銅鉱床の成因について--鉱床学から地下水技術を学ぶ

    井伊 博行

    地下水技術 ( 地下水技術協会 )  45 ( 3 ) 17 - 28   2003.03

  • 河川における負荷量算定の誤差評価と最適測定頻度の推定

    高野芳隆, 石塚正秀, 井伊博行, 平田健正

    土木学会年次学術講演会講演概要集(CD-ROM)   58th ( Disk 1 )   2003

  • GISを用いた茶栽培流域における水質影響評価

    小川祐美, 中杉修身, 西川雅高, 井伊博行, 平田健正

    地下水・土壌汚染とその防止対策に関する研究集会講演集   9th   2003

  • 廃棄物処理と環境化学 5.7 アクチノイド環境動態解析のための地表水及び地下水の地球化学

    井伊博行, 江種伸之, 大貫敏彦

    日本原子力研究所JAERI-Review     94 - 97   2003

  • 紀ノ川流域のケイ素濃度の特徴と45年前との比較

    紺野雅代, 石塚正秀, 井伊博行, 平田健正

    土木学会年次学術講演会講演概要集(CD-ROM)   58th ( Disk 1 )   2003

  • ADEC IOP-1におけるタリム盆地の砂砂漠と砂礫砂漠の土壌水分特性

    石塚 正秀, 三上 正男, 曽 凡江, 井伊 博行, 張 希明

    大会講演予講集   82 ( 82 ) 163 - 163   2002.10

  • 重回帰モデルを用いた地表水の酸素同位体比の空間分布の予測

    石塚正秀, 曽根由実, 井伊博行, 平田健正

    土木学会年次学術講演会講演概要集(CD-ROM)   57th   2002

  • 茶畑地域の硝酸性窒素及び金属イオン汚染について

    井伊 博行

    地下水技術 ( 地下水技術協会 )  43 ( 3 ) 48 - 54   2001.03

  • 茶畑周辺の表層水の流下過程における水質変化について

    山野賢一, 井伊博行, 平田健正, 田中豊和, 西川雅高, 中島二夫, 梅原こう一

    土木学会年次学術講演会講演概要集 第7部   56th   2001

  • 紀ノ川流域における汚濁発生負荷に関する研究

    荒木直哉, 井伊博行, 平田健正, 金子泰純

    土木学会年次学術講演会講演概要集 第7部   56th   2001

  • 大和川の水質特性と流量・水温依存性について

    谷口正伸, 井伊博行, 平田建正, 窪原拓馬

    土木学会年次学術講演会講演概要集 第7部   56th   2001

  • 地下水の要監視項目などによる汚染実態の解明

    中島二夫, 河合渉, 小池明, 永谷隆行, 梅原こう市, 西川雅高, 井伊博行, 田中豊和

    静岡県環境衛生科学研究所報告   ( 43 )   2001

  • 硝酸汚染をした茶畑流出水の特徴 δ<sup>15</sup>Nと多成分濃度変動

    小川祐美, 西川雅高, 中杉修身, 松尾喜義, 井伊博行, 平田健正

    環境化学討論会講演要旨集   10th   2001

  • 山地流域における河川水・地下水の水素・酸素同位体比の特性

    堤久行, 石塚正秀, 井伊博行, 平田健正

    土木学会年次学術講演会講演概要集 第2部   56th   2001

  • 大阪市と富田林市の降水のpH値と溶存イオンの季節変化

    佐原尚美, 井伊博行, 平田健正, 伏井邦彦

    土木学会年次学術講演会講演概要集 第7部   56th   2001

  • Groundwater Nitrogen and Metals Such as Al, Ni, Zn and Mn Contaminations Caused by Nitrogen Fertilizer in Two Japanese Tea Plantations

    Future Groundwater Resources at Risk, Proceedings of the 3rd International Conference   Theme 3, 373-380   2001

  • 環境同位体を用いた河川水・地下水の物質起源の解析

    井伊 博行

    地下水技術 ( 地下水技術協会 )  42 ( 4 ) 1 - 7   2000.04

  • 茶畑への施肥がもたらす地下水への影響について

    田中豊和, 中島二夫, 井伊博行, 梅原こう一, 平田建正

    土木学会年次学術講演会講演概要集 第7部   55th   2000

  • 和泉山脈周辺の降水の溶存イオンおよび水素・酸素安定同位体比に関する研究

    佐原尚美, 井伊博行, 平田健正

    土木学会年次学術講演会講演概要集 第7部   55th   2000

  • 降雨中の水素と酸素の安定同位体比

    落合志穂, 井伊博行, 平田健正

    土木学会年次学術講演会講演概要集 第7部   55th   2000

  • 西部(小笠)地域の窒素による地下水等汚染調査 (第2報)

    中島二夫, 河合渉, 小池明, 永谷隆行, 梅原こう市, 井伊博行, 田中豊和

    静岡県環境衛生科学研究所報告   ( 42 )   2000

  • 地下水の硝酸性窒素による汚染について (第2報)

    中島二夫, 河合渉, 小池明, 永谷隆行, 梅原こう市, 井伊博行

    東海公衆衛生学会講演集   46th   2000

  • Groundwater Remediation with In Situ Air Sparging - Full Scale Field Experimenm -

    EGUSA Nobuyuki, HIRATA Takemasa, II Hiroyuki, FUKUURA Kiyoshi, MATSUSHITA Takashi

    年会一般講演   18   429 - 430   1999.07

  • 札内川流域と石川流域の水質特性の比較について

    加藤友美, 平田健正, 井伊博行, 長谷部正彦, 粂川高徳

    土木学会年次学術講演会講演概要集 第2部   54th   1999

  • Survey on Contamination of Nitrate in Groundwater.

    中島二夫, 河合渉, 小池明, 山本光宣, 梅原こう市, 井伊博行

    静岡県環境衛生科学研究所報告   ( 41 )   1999

  • Pond Water chemistry of tea plantations in Fukuoka and Shizuoka prefecture, Japan

    Hiroyuki Ii (Part: Corresponding author )

    Proc. 23th IAHR Congress   D-006   1999  [Refereed]

  • Analysis of Water Cycle and Migration in Faculty of Systems Engineering, Wakayama University

    HIRATA Takemasa, II Hiroyuki, EGUSA Nobuyuki

    Japanese journal of multiphase flow ( 日本混相流学会 )  12 ( 2 ) 170 - 173   1998.06

  • Nitrate nitrogen as an acidic substance and the pH variation of the surface water.

    井伊博行, 平田健正

    水 ( 月刊「水」発行所 )  39 ( 7 ) 59 - 64   1997.06

  • Development of in-situ water collecting and measuring device of groundwater.

    井伊博行, 堀江芳博, 石井卓, 嶋田純, 渡辺和博

    地下水技術 ( 地下水技術協会 )  39 ( 2 ) 1 - 7   1997.02

  • Nitrogen isotopes in groundwater as indicator of land use

    Tatemasa Hirata, Hiroyuki Ii, Norio Tase, Masataka Nishikawa

    Proceedings, Congress of the International Association of Hydraulic Research, IAHR   C   271 - 276   1997

     View Summary

    The nitrogen isotope values of nitrate were analyzed at six groundwater basins to examine the land use effect on groundwater chemistry and to discriminate nitrate sources to groundwater. The results show that the threshold value of nitrogen isotope value in groundwater between residential and agricultural areas takes 7 to approximately 8 per mill and the nitrogen isotopic composition can be a qualitative land use indicator.

  • Formation stage of spot state deformed crystal of albite.

    伏井邦彦, 井伊博行

    日本鉱物学会年会講演要旨集   1997   1997

  • Soil erosion and desertification in the Yellow River basin.

    井伊博行, 平田健正

    アジア内陸起源の風送ダスト     1997

  • Nitrate nitrogen in surface water around tea plantations.

    井伊博行, 平田健正, 松尾宏, 田瀬則雄, 西川雅高

    地下水・土壌汚染とその防止対策に関する研究集会講演集   5th   1997

  • Crude oil spill pollution in Kuwait.

    井伊博行, 岩淵雅和, 熊本進誠, 末吉マーク, 川口正人

    日本地下水学会講演会講演要旨   1996   1996

  • 438. Flow velocity effect on effective porosity of a sedimentary formation

    II Hiroyuki, OHTUKA Yoshiyuki, MORI Naoki, MISAWA Shinya

    Annual Meeting of the Geological Society of Japan ( The Geological Society of Japan )  1995 ( Gakujutsu Taikai ) 313 - 313   1995

    DOI

  • A novel lunar regolith simulant produced in Japan.

    高野晃, 高野裕, 富樫茂子, 吉田哲二, 井伊博行, 金森洋史, 山口範洋

    宇宙科学技術連合講演会講演集   39th   1995

  • 438. Scale effect on effective porosity and logitudinal disoersivity of a sedimentary formation

    II Hiroyuki, OHTUKA Yoshiyuki

    Annual Meeting of the Geological Society of Japan ( The Geological Society of Japan )  1994 ( Gakujutsu Taikai ) 279 - 279   1994

    DOI

  • 埼玉県西部荒川流域の砂金と自然金の化学組成

    井伊博行, 岡田昭彦, 矢吹貞代

    日本鉱物学会年会講演要旨集   1994   1994

  • 松本トンネルにおける湧水のトリチウム濃度と有効間隙率,透水係数の関係について

    井伊博行, 榊原晋, 大塚義之

    日本地下水学会講演会講演要旨   1994   1994

  • オアシスの水はどこから

    井伊博行

    沙漠物語 ( 森北出版 )    5 - 6   1994

  • 足尾鉱山のRucklidgeite:(Bi,Pb)<sub>3</sub>Te<sub>4</sub>について

    井伊博行, 岡田昭彦, 小川哲夫, 竹内英雄, 猪俣一郎

    日本鉱物学会年会講演要旨集   1993   1993

  • 兵庫県生野鉱山太盛本ひ周辺の金銀鉱物

    井伊博行, 岡田昭彦, 大川久夫, 藤原寅勝, 庭野勝一

    日本岩石鉱物鉱床学会・日本鉱物学会・資源地質学会秋季連合学術講演会講演要旨集   1993   1993

  • 三次元F.E.M.による野外トレーサ試験の物質移行解析

    井伊博行, 新藤静夫, 森直樹, 大塚義之, 三沢伸也, 河村隆二

    日本地下水学会講演会講演要旨   1993   1993

  • 足尾鉱山のBismoclite,Laitakeriteについて

    井伊博行, 堀秀道

    日本鉱物学会年会講演要旨集   1992   1992

  • 415 Chemical properties of groundwater from tunnel in volcanic sedimentary rocks in Matsumoto city

    II Hiroyuki, OHTUKA Yoshiyuki

    Annual Meeting of the Geological Society of Japan ( The Geological Society of Japan )  1992   535 - 535   1992

    DOI

  • 埼玉県長瀞町樋口の砂鉱床中の白金属鉱物について

    井伊博行, 井伊洋子, 岡田昭彦

    日本鉱物学会年会講演要旨集   1991   1991

  • Comparison between porosity and effective porosity of bentonite.

    井伊博行, 杉山博道, 大塚義之, 堀江芳博

    土木学会年次学術講演会講演概要集 第2部   45th   1990

  • Landside and valuation of the stability of the cutting slope about the Tertiary (Asakawa Formation)

    Ii Hiroyuki, Kusakari Taiti, Yosioka Ryouiti, Sasaki Nobuhiko

    Annual Meeting of the Geological Society of Japan ( The Geological Society of Japan )  1987   534 - 534   1987

    DOI

  • P2-23 放射性廃棄物処分におけるベントナイトの応用

    黒坂 昭人, 新野 正明, 鈴木 啓三, 橋本 修左, 井伊 博行, 飯塚 友之助

    粘土科学討論会講演要旨集 ( 一般社団法人日本粘土学会 )  29   78 - 78   1985

    DOI

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Works

  • アジア内陸部起源の風送ダストの発生メカニズムおよび長距離輸送過程

    1999

  • アクチノイド環境動態解析のための地表水及び地下水の地球化学

    1999

  • Studies on origin and transport of aeolian dust and its impact on climate

    1999

  • Geochemistry of surface water and groundwater about actinide

    1999

  • 物質トレーサによる水循環調査の新たな手法の開発

    1996
    -
    1998

  • Development of new method to study water cycle using isotope

    1996
    -
    1998

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Awards & Honors

  • 支部功労表彰

    Winner: 井伊博行

    2014.12   (公社)水環境学会   関西支部での幹事として長年水環境学会の発展と環境保全の普及に貢献した点の評価

  • Best Pasper Award

    Winner: Hiroyuki Ii

    2014.11   International Journal of GEOMATE   CU, ZN AND AS CONTAMINATION OF SEAWEED BESIDE SHIZUKI AND KANAYAMA METAL MINES IN JAPAN

  • 環境科学会 論文賞

    Winner: 小川祐美, 中杉修身, 西川雅高, 井伊博行, 平田健正

    2003.05   環境科学会   GISを用いた茶栽培流域における水質評価法の検討

Conference Activities & Talks

  • CU, ZN AND AS CONTAMINATION OF SEAWEED BESIDE SHIZUKI AND KANAYAMA METAL MINES IN JAPAN

    Hiroyuki Ii

    Fourth International Conference on Geotechnique, Construction Materials and Environment, Brisbane, Australia,  2014.11  

  • GROWTH CHARACTERISTICS OF PINUS DENSIFLORA IN SIMULATED HEAVY METAL CONTAMINATED SOIL

    Takuma Kubohara, Hiroyuki Ii, Ryoichi Araki, Masakazu Saito

    SEE MIE 2022 (The Eighth International Conference on Structure, Engineering & Environment,)  2022.11.12  

  • DIFFERENCES IN PLANTS HEAVY METAL CONCENTRATIONS BY REGION

    Takuya Ueda, Hiroyuki Ii

    SEE MIE 2022 (The Eighth International Conference on Structure, Engineering & Environment,)  2022.11.12  

  • TUNGSTEN, COPPER, MANGANESE, ZINC, IRON AND ARSENIC CONCENTRATIONS OF PLANTS IN KIWADA MINE

    Daiki Yamamoto, Hiroyuki Ii

    SEE MIE 2022 (The Eighth International Conference on Structure, Engineering & Environment,)  2022.11.12  

  • Cu,Zn,Fe AND Mn CONCENTRATIONS OF SOME GASTROPODS IN THE WAKAGAWA ESTUARY TIDAL FLAT

    Kazuko Kubo, Hiroyuki Ii

    SEE MIE 2022 (The Eighth International Conference on Structure, Engineering & Environment,)  2022.11.11  

  • EFFECTIVENESS OF BRYOPHYTES AND CICADA SHELLS AS A BIO-INDEX FOR HEAVY METAL CONTAMINATION OF RIVER WATER AND SOIL

    Hiroyuki ii  [Invited]

    SEE MIE 2022 (The Eighth International Conference on Structure, Engineering & Environment,)  2022.11.11  

  • 福島県富岡町でのオートラジオグラフィーによる植物体の放射性汚染の評価

    井伊博行  [Invited]

    日本放射化学会 第66回討論会  2022.09.16  

  • Estimation of useful species of benthic animals and water plants for index of Al and Cr contamination for river in the Kinokawa River catchment

    Takuma Kubphara, Hiroyuki Ii

    11th Int. Conf. on Geotechnique, Construction Materials & Environment, Kyoto, Japan  2021.11.04  

  • Heavy metal concentration change in oyster after changing living places with various heavy metal condition in Osaka Bay, Japan

    Tetsuya Fukano, Hiroyuki II

    9th Int. Conf. on Geotechnique, Construction Materials & Environment, Tokyo, Japan  2019.11.21  

  • Mapping stbale isotopic ratios of stream water and Cu, Zn, Pb and As concentrations of Bryophyte along streams in the east of Okayama and Tottori prefectures , Japan

    Hiroyuki Ii, Masahito Yoshimursa

    4th Int. Conf. on Science, Engineering & Environment (SEE) Nagoya, Kyoto  2018.11.13  

  • Effectiveness of using cicada shell and river bryophyte as an index of available Cu, Zn, Pb, As, Ni and Cr contamination

    Hiroyuki Ii

    4th Int. Conf. on Science, Engineering & Environment (SEE) Nagoya, Kyoto  2018.11.13  

  • Arsenic concentration and stable isotopic ratios of oxygen and hydrogen for groundwater and river water around the Midoro and Shindenhigashisami Tunnels in Gose city, Nara, Japan

    Hiroyuki Ii

    7th Int. Conf. on Geotechnique, Construction Materials & Environment, Mie, Japan  2017.11.23  

  • PRECIPITATION AMOUNT ON TOPOGRAPHY AT BETWEEN THE OSAKA PLAIN AND THE SOUTH IKOMA MOUNTAINS, OSAKA PREFECTURE, JAPAN

    Hiroki Nishiwaki, Hiroyuki Ii

    Seventh International Conference on Geotechnique, Construction Materials and Environment, Mie, Japan,  2017.11.21  

  • THE ORIGIN OF GROUNDWATER IN THE KIONOKAWA RIVER CATCHMENT

    Hiroki Kitagawa, Takuma Kubohara, Hiroyuki Ii

    Seventh International Conference on Geotechnique, Construction Materials and Environment, Mie, Japan,  2017.11.21  

  • MEASUREMENT METHOD OF HEAVY METAL CONCENTRATION IN SOIL OF OSAKA PREFECTURE USING CICADA SHELL

    Satoru Ueda, Hiroyuki Ii

    Seventh International Conference on Geotechnique, Construction Materials and Environment, Mie, Japan,  2017.11.21  

  • HEAVY METAL CONCENTRATION OF SEAWEED BY INFLUENCE ON COPPER MINE AT SADAMISAKI PENINSULA

    Erika Ueno, Hiroyuki Ii

    Seventh International Conference on Geotechnique, Construction Materials and Environment, Mie, Japan  2017.11.21  

  • TUNNEL CONSTRUCTION IMPACT ON GROUNDWATER CHEMISTRY OVER 25 YEARS OF OBSERVATION AT MATSUMOTO TUNNEL, MATSUMOTO CITY, JAPAN

    Hiroyuki Ii  [Invited]

    2nd Int. Conf. on Science, Engineering & Environment (SEE) Osaka Kyoto  2016.11.22  

  • EFFECTIVENESS OF USING RIVER INSECT LARVAE AS AN INDEX OF CU, ZN AND AS CONTAMINATIONS IN RIVERS, JAPAN

    Hiroyuki Ii, Akio Nishida

    Second International Conference on Science, Engineering & Environment, Osaka City, Japan  2016.11.21  

  • POTENTIAL OF OYSTERS AS AN ENVIRONMENTAL INDEX

    Tetsuya Fukano, Hiroyuki Ii

    Second International Conference on Science, Engineering & Environment, Osaka City, Japan,  2016.11.21  

  • THE RELATION BETWEEN PRECIPITATION AND THE RIVER RUNOFF IN THE SHINGU RIVER BASIN AT THE TYPHOON NO.12 IN 2011

    Masanobu Taniguchi, Hiroyuki Ii

    Second International Conference on Science, Engineering & Environment, Osaka City, Japan  2016.11.21  

  • HYDROGEN ISOTOPES AND AMOUNT OF PRECIPITATION SAMPLED BETWEEN OSAKA PLAIN AND SOUTH IKOMA MOUNTAIN, JAPAN

    Hiroki Nishiwaki, Hiroyuki Ii

    Second International Conference on Science, Engineering & Environment, Osaka City, Japan,  2016.11.21  

  • EVALUATION OF CU CONTAMINATION FOR RIVER USING BRYOPHYTE IN THE KINOKAWA RIVER CATCHMENT

    Takuma Kubohara, Hiroyuki Ii

    Second International Conference on Science, Engineering & Environment, Osaka City, Japan,  2016.11.21  

  • IMPORTANCE OF ROOM VENTILATION FOR MAINTAINING HEALTHY CO2 CONCENTRATIONS

    Hiroyuki Ii, Kazuki Taguchi, Masahiro Yamashita

    Fifth International Conference on Geotechnique, Construction Materials and Environment, Osaka, Japan,  2015.11.16  

  • DISTRIBUTION CHARACTERISTICS OF THE LOAD AMOUNT OF NUTRIENTS, INCLUDING AT THE FLOODS TIME IN YAMATO RIVER BASIN

    Masanobu Taniguchi, Hiroyuki Ii, Tatemasa Hirata

    Fifth International Conference on Geotechnique, Construction Materials and Environment, Osaka, Japan, Nov  2015.11.16  

  • HEAVY METAL CONCENTRATIONS OF SEAWEED FROM OSAKA BAY TO SOUTH OF KII PENINSULA, JAPAN

    Hiroyuki Ii, Miho Kohara

    Fifth International Conference on Geotechnique, Construction Materials and Environment, Osaka, Japan  2015.11.16  

  • ESTIMATION OF EVAPORATION RATE OF SURFACE WATER TO USING HYDROGEN AND OXYGEN ISOTOPIC RATIO

    Masahiro Yamashita, Hiroyuki Ii

    Fifth International Conference on Geotechnique, Construction Materials and Environment, Osaka, Japan,  2015.11.16  

  • ESTIMATION OF USEFUL SPECIES OF RIVER INSECTS AND WATER PLANTS AS AN INDEX OF METAL CONTAMINATION IN THE KINOKAWA RIVER CATCHMENT

    Takuma Kubohara, Hiroyuki Ii

    Fifth International Conference on Geotechnique, Construction Materials and Environment, Osaka, Japan,  2015.11.16  

  • OXYGEN AND HYDROGEN ISOTOPE STUDY FOR PRECIPITATION SAMPLED AT OSAKA AND MATSUE IN JAPAN

    Tetsuya Fukano, Hiroyuki Ii

    Fifth International Conference on Geotechnique, Construction Materials and Environment, Osaka, Japan,  2015.11.16  

  • WATER BALANCE ANALYSIS CONSIDERING RUNOFF OF UNGAUGED CATCHMENTS IN IWAKI RIVER BASIN, NORTHERN JAPAN

    Soichiro Kageyama, Shingo Tomiyama, Makoto Ikeda, Hiroyuki Ii

    Fourth International Conference on Geotechnique, Construction Materials and Environment, Brisbane, Australia,  2014.11.19  

  • UNEXPECTED HIGH CO2 CONCENTRATION IN CLASSROOMS OF WAKAYAMA UNIVERSITY

    Masahiro Yamashita, Hiroyuki Ii

    Fourth International Conference on Geotechnique, Construction Materials and Environment, Brisbane, Australia, N  2014.11.19  

  • CHEMISTRY OF RIVER WATER, RIVER INSECT AND WATER PLANT IN THE KINOKAWA RIVER CATCHMENT

    Takuma Kubohara, Hiroyuki Ii

    Fourth International Conference on Geotechnique, Construction Materials and Environment, Brisbane, Australia  2014.11.19  

  • IMPORTANCE OF CORYDALIDAE AS AN INDEX OF METAL CONTAMINATION OF RIVER

    Akihiro Fujino, Hiroyuki Ii

    Fourth International Conference on Geotechnique, Construction Materials and Environment, Brisbane, Australia, N  2014.11.19  

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Patents

  • 砂採取用補助器具

    Patent no: 3694748

    Date registered: 2005.07.08 

    Date applied: 2003.05.13 ( 特願2003-134488 )   Publication date: 2004.12.02 ( 特開2004-340604 )  

    Inventor(s)/Creator(s): 石塚正秀、井伊博行、平田健正  Applicant: 国立大学法人和歌山大学

  • 蒸発率推定方法、蒸発率推定システム、蒸発率推定用プログラムおよび記録媒体

    Date applied: 2010.08.16 ( 特願2010-181967 )   Publication date: 2012.03.01 ( 特開2012-42255 )  

    Inventor(s)/Creator(s): 井伊博行、宮路和葉、宮原啓  Applicant: 国立大学法人和歌山大学

Research Exchange

  • ベトナム ドンタップ省の農地の酸性化対策

    2022.11
    -
    Now
     

     International research exchanges

  • 豪州、ビクトリア州の硝酸性窒素汚染の解明

    2018.03
     

     International research exchanges

  • 豪州、ビクトリア州のアンチモニー、砒素汚染地域の植物、河川水、地下水調査

    2018.03
     

     International research exchanges

  • 豪州、ビクトリア州の硝酸性窒素汚染の解明

    2018.03
     

     International research exchanges

  • 豪州、ビクトリア州の硝酸性窒素汚染の解明

    2018.03
     

     International research exchanges

  • 豪州、ビクトリア州の硝酸性窒素汚染の解明

    2018.03
     

     International research exchanges

  • 豪州、ビクトリア州の硝酸性窒素汚染の解明

    2018.03
     

     International research exchanges

  • 豪州、ビクトリア州の硝酸性窒素汚染の解明

    2018.03
     

     International research exchanges

  • 豪州、ビクトリア州の湖水の塩水化解明研究

    2018.03
     

     International research exchanges

  • 豪州、ビクトリア州の湖水の塩水化解明研究

    2018.03
     

     International research exchanges

  • 豪州、ビクトリア州の海藻の重金属汚染調査

    2018.03
     

     International research exchanges

  • 豪州、ビクトリア州のアンチモニー、砒素汚染地域の植物、河川水、地下水調査

    2018.03
     

     International research exchanges

  • 豪州、ビクトリア州のアンチモニー、砒素汚染地域の植物、河川水、地下水調査

    2018.03
     

     International research exchanges

  • 豪州、ビクトリア州のアンチモニー、砒素汚染地域の植物、河川水、地下水調査

    2018.03
     

     International research exchanges

  • 豪州、ビクトリア州のアンチモニー、砒素汚染地域の植物、河川水、地下水調査

    2017.03
     

     International research exchanges

  • 豪州、メルボルンの地下鉄の漏水の評価方法に関する共同研究

    2017.03
     

     International research exchanges

  • 豪州、ビクトリア州の硝酸性窒素汚染の解明

    2017.03
     

     International research exchanges

  • 豪州、ビクトリア州の湖水の塩水化解明研究

    2017.03
     

     International research exchanges

  • 豪州、ビクトリア州の海藻の重金属汚染調査

    2017.03
     

     International research exchanges

  • タスマニア島での鉛クロム汚染地域の植物、河川水、地下水調査

    2016.04
     

     International research exchanges

  • 伊豆半島の縄地鉱山周辺の金属汚染と鉱床学的な調査を行った

    2016.02
     

     International research exchanges

  • シドニー郊外の乾燥地湖水の水循環の解明

    2014.11
     

     International research exchanges

  • ビクトリア州 メルボルン東部、ギップスランドの石炭露天掘り地域の地下水解明

    2014.11
     

     International research exchanges

  • 乾燥地湖水, ミネラルウォーターの共同研究 乾燥地研究所の見学

    2014.04
     

     International research exchanges

  • バララット大学が2,014年1月からモナシュ大学 Gippslandキャンパスと合併するので、今後発生するGippslamnd周辺の地下水問題の調査を行った

    2013.11
     

     International research exchanges

  • デイキン大学とビクトリア州メルボルン北部地域の調査。

    2013.04
    -
    2013.05
     

     International research exchanges

  • 乾燥地湖水, ミネラルウォーターの共同研究 乾燥地研究所の見学

    2013.04
     

     International research exchanges

  • デイキン大学とビクトリア州の乾燥地河川の研究を実施。研究者間の国際交流協定を1999年に結んでおり、共同研究を行っている。

    2012.08
     

     International research exchanges

  • 乾燥地湖水, ミネラルウォーターの共同研究

    2012.04
     

     International research exchanges

  • 乾燥地湖水, ミネラルウォーターの共同研究

    2011.11
     

     International research exchanges

  • 乾燥地湖水の共同研究

    2010.03
     

     International research exchanges

  • デイキン大学とビクトリア州の乾燥地河川の研究を実施。研究者間の国際交流協定を1999年に結んでおり、共同研究を行っている。

    1999.04
    -
    2012.03
     

     International research exchanges

▼display all

KAKENHI

  • トンネルを使った大規模、長期排水実験による地下構造物が地下水に与える影響評価

    2011.04
    -
    2014.03
     

    Grant-in-Aid for Scientific Research(C)  Principal investigator

  • 簡易窒素同位体分析による大和川流域の窒素循環の解析

    2004.04
    -
    2006.03
     

    Grant-in-Aid for Scientific Research(C)  Principal investigator

  • 水素・酸素同位体比を用いた大気中の水循環システムの解析

    2001.04
    -
    2002.03
     

    Grant-in-Aid for Scientific Research(C)  Principal investigator

  • 汚染された地下環境修復技術の評価と最適化に関する研究

    1999.04
    -
    2002.03
     

    Grant-in-Aid for Scientific Research(B)  Co-investigator

  • 環境同位体を用いた地下環境における物質の動態と起源の解明

    1998.04
    -
    2001.03
     

    Grant-in-Aid for Scientific Research(C)  Co-investigator

  • 環境同位体を用いた表層水の硝酸性窒素の動態解析

    1997.04
    -
    2000.03
     

    Grant-in-Aid for Scientific Research(C)  Principal investigator

▼display all

Competitive funding, donations, etc. from foundation, company, etc.

  • システム工学部寄附金(大貫 敏彦)

    2023.11
     

    Contribution  Principal investigator

  • システム工学部寄附金(綾羽株式会社)

    2023.04
     

    Contribution  Principal investigator

  • システム工学部寄附金(一般社団法人日本アジア医療福祉教育研究所)

    2023.02
     

    Contribution  Principal investigator

  • システム工学部寄附金(株式会社アート科学)

    2022.05
     

    Contribution  Principal investigator

  • システム工学部寄附金(綾羽株式会社)

    2022.04
     

    Contribution  Principal investigator

  • システム工学部寄附金(株式会社アート科学)

    2021.05
     

    Contribution  Principal investigator

  • システム工学部寄附金(DOWAエコシステム株式会社)

    2015.11
     

    Contribution  Principal investigator

  • システム工学部寄附金(DOWAエコシステム株式会社)

    2014.11
     

    Contribution  Principal investigator

  • システム工学部寄附金(JX日鉱日石探開株式会社)

    2013.07
     

    Contribution  Principal investigator

  • システム工学部寄附金(JX日鉱日石探開株式会社)

    2012.11
     

    Contribution  Principal investigator

  • システム工学部寄附金((財)鉄鋼業環境保全技術開発基金研究助成)

    2010.11
    -
    2012.10
     

    Research subsidy  Principal investigator

  • システム工学部寄附金((財)鉄鋼業環境保全技術開発基金研究助成)

    2010.11
    -
    2012.10
     

    Research subsidy  Principal investigator

  • システム工学部寄附金(中央温泉研究所)

    2010.04
    -
    2011.03
     

    Contribution  Principal investigator

  • システム工学部寄附金(株式会社ニュージェック)

    2009.04
    -
    2010.03
     

    Contribution  Principal investigator

  • システム工学部寄附金(河川財団研究助成)

    2009.04
    -
    2010.03
     

    Research subsidy  Principal investigator

  • システム工学部寄附金(株式会社ニュージェック)

    2008.04
    -
    2009.03
     

    Contribution  Principal investigator

  • システム工学部寄附金(社団法人全国地質調査業協会連合会)

    2007.04
    -
    2008.03
     

    Contribution  Principal investigator

  • システム工学部寄附金(河川財団研究助成)

    2007.04
    -
    2008.03
     

    Research subsidy  Principal investigator

  • システム工学部寄附金(株式会社日さく関東支店研究助成)

    2006.04
    -
    2007.03
     

    Research subsidy  Principal investigator

  • システム工学部寄附金(社団法人土木学会研究助成)

    2006.04
    -
    2007.03
     

    Research subsidy  Principal investigator

  • システム工学部寄附金(株式会社東伸技術コンサルタント)

    2005.04
    -
    2006.03
     

    Contribution  Principal investigator

  • システム工学部寄附金(東伸技術コンサルタント)

    2005.02
     

    Contribution  Principal investigator

  • システム工学部寄附金(株式会社日さく関東支店研究助成)

    2004.04
    -
    2006.03
     

    Research subsidy  Principal investigator

  • システム工学部寄附金(社団法人土木学会研究助成)

    2004.04
    -
    2006.03
     

    Research subsidy  Principal investigator

  • システム工学部寄附金(株式会社環境科学コーポレーション研究助成)

    2004.04
    -
    2006.03
     

    Research subsidy  Principal investigator

  • システム工学部寄附金(社団法人全国地質調査業協会連合会)

    2004.04
    -
    2005.03
     

    Contribution  Principal investigator

  • システム工学部寄附金(株式会社ニュージェック)

    2004.04
    -
    2005.03
     

    Contribution  Principal investigator

  • システム工学部寄附金(BMLフードサイエンス)

    2004.04
    -
    2005.03
     

    Contribution  Principal investigator

  • システム工学部寄附金((社)土木学会研究助成)

    2003.04
    -
    2004.03
     

    Research subsidy  Principal investigator

  • システム工学部寄附金(応用地質株式会社関西支社)

    2002.04
    -
    2003.03
     

    Contribution  Principal investigator

  • システム工学部寄附金(応用地質株式会社関西支社)

    2001.04
    -
    2002.03
     

    Contribution  Principal investigator

  • システム工学部寄附金(応用地質株式会社大阪支社)

    2000.04
    -
    2001.03
     

    Contribution  Principal investigator

  • システム工学部寄附金(応用地質株式会社大阪支社)

    1999.04
    -
    2000.03
     

    Contribution  Principal investigator

▼display all

Joint or Subcontracted Research with foundation, company, etc.

  • 模擬月土の模擬特性向上に関する研究 月の高地模擬土原料の調達性評価(その2)

    2018.06
    -
    2019.03
     

    Contracted research  Principal investigator

  • 模擬月土の原料選定に関する研究

    2018.02
    -
    2018.03
     

    Contracted research  Principal investigator

  • 模擬月土の模擬特性向上に関する研究 月の高地模擬土原料の調達性評価

    2017.09
    -
    2018.02
     

    Contracted research  Principal investigator

  • 和歌山平野における地下水の化学性状把握

    2017.05
    -
    2018.03
     

    Contracted research  Principal investigator

  • 和歌山平野における地下水の化学性状把握

    2016.05
    -
    2017.03
     

    Contracted research  Principal investigator

  • 和歌山平野における地下水の化学性状把握

    2015.07
    -
    2016.03
     

    Contracted research  Principal investigator

  • 湿原流域の変容の監視手法の確立と生態系修復のための調和的管理手法の開発

    2012.07
    -
    2013.03
     

    Contracted research  Principal investigator

  • 湿原流域の変容の監視手法の確立と生態系修復のための調和的管理手法の開発

    2010.05
    -
    2012.03
     

    Contracted research  Principal investigator

  • Understanding the connections between ground and surface water on the Werribee Plains

    2009.04
    -
    2011.03
     

    Joint research  Principal investigator

  • 釧路湿原プロジェクト:湿原流域の変容の監視手法の確立と生態系修復のための調和的管理手法の開発

    2008.08
    -
    2010.03
     

    Contracted research  Principal investigator

  • 和歌山県内における保全すべき自然資源に関する実績調査

    2008.04
    -
    2009.03
     

    Joint research  Principal investigator

  • ワラビー川流域の調査研究

    2007.04
    -
    2008.03
     

    Joint research  Principal investigator

  • 地下ダム流域の空洞性石灰岩中の水溶質動態の解明

    2007.04
    -
    2008.03
     

    Contracted research  Principal investigator

  • 最終処分場適地選定のための評価基準及び評価システムに関する研究

    2005.04
    -
    2007.03
     

    Joint research  Principal investigator

  • 斜面地 地滑り災害予測ネットワークシステム構築

    2003.04
    -
    2004.03
     

    Joint research  Principal investigator

  • 環境同位体を用いた水環境評価に関する研究

    2000.04
    -
    2001.03
     

    Joint research  Principal investigator

  • 安定同位体比を用いた河川水質の評価に関する研究

    1999.04
    -
    2000.03
     

    Joint research  Principal investigator

  • 窒素同位体による表層水の物質循環の解明

    1998.04
    -
    1999.03
     

    Joint research  Principal investigator

  • 物質トレーサによる水循環調査の新たな手法の開発

    1996.04
    -
    1999.03
     

    Contracted research  Co-investigator

▼display all

Instructor for open lecture, peer review for academic journal, media appearances, etc.

  • 座長

    2022.08.18
    -
    2022.08.19

    特定非営利活動法人瀬戸内海研究会議

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    海洋保全

    8月18日と19日に和歌山県民文化会館で開催する第29回2022年度瀬戸内海研究フォーラム第1セッション座長と運営

  • 研究業績評価会審査員

    2022.03.03

    国立研究開発法人日本原子力研究開発機構 人事部

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    「学協会、政府、自治体等の公的委員」以外の委員

    当機構おいて任期付の研究員を採用するにあたり、応募者がこれまで行ってきた研究業績について審査し、採用の可否の審議を行う。

  • 令和3年度農林水産研究推進事業委託プロジェクト研究「炭素貯留能力に優れた造林樹種の効率的育種プロジェクト」審査委員会委員

    2021.03.16

    農林水産省 農林水産技術会議事務局

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    農業

    上記職名欄公募研究課題に係る提案書の審査及び委託予定先の決定

  • 講演講師

    2020.11.06

    和歌山県立向陽高等学校

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    実験 実習

    本校生徒を対象に、実習等を交えた講座を担当していただく。

  • 非常勤講師

    2019.08
    -
    Now

    東京大学アイソトープ総合センター

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    非常勤講師等

    非常勤講師,任期:2019年8月~

  • Adjunct professor

    2019.04
    -
    2020.03

    University of Ballarat

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    国際交流事業

    大学院学生の指導,相手国:豪州

  • モンゴルツインプログラム

    2019.04
    -
    2020.03

    モンゴル科学技術大学

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    国際交流事業

    モンゴルの大学生の編入学,相手国:モンゴル

  • Regional Representatives/GEOMATE Members

    2019.04
    -
    2019.12

    International Journal of GEOMATE

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    学術雑誌等の編集委員・査読・審査員等

    Regional Representatives/GEOMATE Members ,任期:1

  • 水工学論文集 査読

    2019.03
    -
    2020.03

    日本土木学会 

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    学術雑誌等の編集委員・査読・審査員等

    水工学論文集 査読,任期:2

  • とびたて 留学制度

    2018.04
    -
    2019.03

    上田敏貴

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    国際交流事業

    研究パートナー、共同研究の補助,相手国:豪州 デイキン大学

  • モンゴルツインプログラム

    2018.04
    -
    2019.03

    モンゴル科学技術大学

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    国際交流事業

    モンゴルの大学生の編入学,相手国:モンゴル

  • Adjunct professor

    2018.04
    -
    2019.03

    University of Ballarat

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    国際交流事業

    大学院学生の指導,相手国:豪州

  • とびたて 留学制度

    2018.04
    -
    2019.03

    西脇 大貴

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    国際交流事業

    研究パートナー、共同研究の補助,相手国:豪州 デイキン大学

  • Regional Representatives/GEOMATE Members

    2018.04
    -
    2018.12

    International Journal of GEOMATE

     View Details

    学術雑誌等の編集委員・査読・審査員等

    Regional Representatives/GEOMATE Members ,任期:1

  • とびたて 留学制度

    2017.04
    -
    2018.03

    北側 裕貴

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    国際交流事業

    研究パートナー、共同研究の補助,相手国:豪州 連邦大学

  • モンゴルツインプログラム

    2017.04
    -
    2018.03

    モンゴル科学技術大学

     View Details

    国際交流事業

    モンゴルの大学生の編入学,相手国:モンゴル

  • Adjunct professor

    2017.04
    -
    2018.03

    University of Ballarat

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    国際交流事業

    大学院学生の指導,相手国:豪州

  • Regional Representatives/GEOMATE Members

    2017.04
    -
    2017.12

    International Journal of GEOMATE

     View Details

    学術雑誌等の編集委員・査読・審査員等

    Regional Representatives/GEOMATE Members ,任期:1

  • 査読者

    2017.03
    -
    2018.03

    Water resource research

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    学術雑誌等の編集委員・査読・審査員等

    査読者,任期:1

  • 講師

    2016.11
    -
    Now

    休廃止鉱山に係る講演

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    講演講師等

    講師

  • 編集委員

    2016.04
    -
    2018.03

    水環境学会

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    学術雑誌等の編集委員・査読・審査員等

    編集委員,任期:2

  • Regional Representatives/GEOMATE Members

    2016.04
    -
    2017.12

    International Journal of GEOMATE

     View Details

    学術雑誌等の編集委員・査読・審査員等

    Regional Representatives/GEOMATE Members ,任期:1

  • Adjunct professor

    2016.04
    -
    2017.03

    University of Ballarat

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    国際交流事業

    大学院学生の指導,相手国:豪州

  • 水工学論文集 査読

    2016.03
    -
    2017.03

    日本土木学会 

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    学術雑誌等の編集委員・査読・審査員等

    水工学論文集 査読,任期:2

  • 世界の水環境 

    2015.12

    花王株式会社 和歌山工場

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    公開講座・講演会の企画・講師等

    世界の水環境を紹介し、環境問題に関心をもってもらい、日ごろ工場から排出される水やガスについて考える機会を与えるための講演。,日付:2015.6.12

  • Regional Representatives/GEOMATE Members

    2015.04
    -
    2017.12

    International Journal of GEOMATE

     View Details

    学術雑誌等の編集委員・査読・審査員等

    Regional Representatives/GEOMATE Members ,任期:1

  • Adjunct professor

    2015.04
    -
    2016.03

    University of Ballarat

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    国際交流事業

    大学院学生の指導,相手国:豪州

  • national advisory committee

    2015.04
    -
    2015.11

    国際会議 2015GEOMATE

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    学術雑誌等の編集委員・査読・審査員等

    national advisory committee,任期:1

  • 地球温暖化による「海」と「さかな」の変化

    2014.12

    農林水産省 独立行政法人水産総合研究センター

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    公開講座・講演会の企画・講師等

    水産業を営む関係者に温暖化による影響、変化、対応策を講演した ,日付:2014.12.4

  • Adjunct professor

    2014.04
    -
    2015.03

    University of Ballarat

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    国際交流事業

    大学院学生の指導,相手国:豪州

  • Adjunct professor

    2013.04
    -
    2014.03

    University of Ballarat

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    国際交流事業

    大学院学生の指導,相手国:豪州

  • SSH中高合同ゼミ講義 (向陽高校)

    2011.11

    その他

     View Details

    小・中・高校生を対象とした学部体験入学・出張講座等

    1時限目:身近な水の水質測定を通じた水環境の理解 2時限目:放射線を計る,日付:2011年11月4日

  • 論文集編集委員

    2011.04
    -
    2013.03

    日本土木学会 

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    学術雑誌等の編集委員・査読・審査員等

    論文集編集委員,任期:2

  • 南紀熊野サテライト5周年記念事業 講演会

    2010.12

    南紀熊野サテライト

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    公開講座・講演会の企画・講師等

    紀伊半島学,日付:2010.12

  • 吉野川・紀ノ川流域協議会 講演会

    2010.03

    吉野川・紀ノ川流域協議会 講演

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    公開講座・講演会の企画・講師等

    水環境に関する講演会 講演者,日付:2010.3

  • 講演講師

    2007.07

    和歌山市中学理科教育研究会

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    公開講座・講演会の企画・講師等

    8月7日環境に関する講演,日付:2007.7

  • 講演講師

    2003.10

    放送大学講師

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    公開講座・講演会の企画・講師等

    面接授業:「鉱物と水からみた地球環境問題」について,授業を行った.,日付:2003.10

  • メディア出演等

    2003.09

    The border watch (オーストラリアの新聞)

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    研究成果に係る新聞掲載、テレビ・ラジオ出演

    ブルーレイクのなぞを解くプロジェクト
    南オーストラリア州政府,デイキン大学,和歌山大学との間でのマウントガンビアにあるクレーター湖の水質に関する共同研究プロジェクトが行われようとしている.州政府としてフィル・ゴレイ,デイキン大学のニック・タルコジー,和歌山大学の井伊教授によって,すでに,予備的な研究が進められている.

  • メディア出演等

    2002.02

    The standard (オーストラリアの新聞)

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    研究成果に係る新聞掲載、テレビ・ラジオ出演

    デイキン大学と和歌山大学の井伊教授との共同研究によって,ビクトリア州南部のグレナッグ川の水質調査が行われており,これをきっかけに,和歌山大学の修士学生,デイキン大学の修士学生が相互に,大学で実験解析を行っている.デイキン大学のカーリーが和歌山大学で,パプアニュウギニア沖のリヒール島の鉱山海水汚染のサンプルの分析を,和歌山大学で行うことで,短期間で多くの分析を行い,汚染についての成果をあげています.一方,和歌山大学からの学生も,デイキン大学で河川,湖沼の調査に参加し,現在,調査している河川の研究プロジェクトで成果を挙げています.

  • 講演講師

    2000.04

    筑波大学

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    公開講座・講演会の企画・講師等

    非常勤講師 「水文学特論II」の集中授業,日付:2000.11~2000.12

  • 講演講師

    1999.04

    和歌山工業高等専門学校

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    公開講座・講演会の企画・講師等

    都市工学科「環境科学」の非常勤講師,日付:1999.10~2000.2

▼display all

Committee member history in academic associations, government agencies, municipalities, etc.

  • 近畿地方整備局和歌山県域総合評価委員会

    2022.05.16
    -
    2025.03.31
     

    国土交通省近畿地方整備局和歌山河川国道事務所

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    環境工事

    和歌山県域総合評価委員会において、公共工事の品質確保を推進するため総合評価落札方式に関しての審査。

  • かつらぎ町環境保全審議会委員

    2022.04.01
    -
    2024.03.31
     

    かつらぎ町

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    環境保全

    環境保全等に関する必要な事項の審議

  • 和歌山県河川整備審議会委員

    2021.10.01
    -
    2023.09.30
     

    和歌山県

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    地域包括支援センター

    和歌山県が管理する河川の整備に関する方針、計画及び評価についての重要事項
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  • 和歌山県リサイクル製品認定審査会委員

    2021.09.01
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    2023.03.31
     

    和歌山県

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    廃棄物 リサイクル

    和歌山県リサイクル製品認定適否について、知事への意見具申

  • 脱炭素型農業実現のためのパイロット研究プロジェクト運営委員会運営委員

    2021.04.27
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    2025.03.31
     

    農林水産省 技術会議事務局

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    学協会、政府、自治体等の公的委員

    農林水産研究推進事業委託プロジェクト研究課題に係る研究実施計画案の策定及び研究推進方策の検討

  • 和歌山市入札監視委員会委員

    2021.04.01
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    2023.03.31
     

    和歌山市役所

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    公共事業

    建設工事に係る入札及び契約手続きの運用や状況についての審議

  • 和歌山県建設工事等実績認定審査会

    2021.04.01
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    2023.03.31
     

    和歌山県

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    学協会、政府、自治体等の公的委員

    県が発注する建設工事及び建設工事に係る委託業務の条件付き一般競争入札における実績条件と同等の能力を有すると認められる者についての審査に関する事務

  • 和歌山県建設工事等総合評価審査委員会

    2021.04.01
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    2023.03.31
     

    和歌山県

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    学協会、政府、自治体等の公的委員

    県が発注する建設工事及び建設工事に係る委託業務の総合評価落札方式による入
    札についての重要事項の調査審議に関する事務

  • 紀の川流域懇談会委員

    2020.08.01
    -
    2023.07.31
     

    国土交通省 近畿地方整備局

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    学協会、政府、自治体等の公的委員

    河川整備計画に基づく事業の進捗やその点検結果について、専門的立場から助言を行う。

  • 熊野川懇談会委員

    2020.06.18
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    2022.06.30
     

    国土交通省近畿地方整備局

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    学協会、政府、自治体等の公的委員

    熊野川懇談会において、専門的立場から助言を行う。

  • 委員

    2019.10
    -
    2021.09
     

    和歌山県河川整備審議会

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    国や地方自治体、他大学・研究機関等での委員

    委員,任期:2019年10月~2021年9月

  • 学識経験者

    2019.08
    -
    Now
     

    エヌエス環境株式会社西日本支社

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    国や地方自治体、他大学・研究機関等での委員

    学識経験者,任期:2019年8月~

  • 委員

    2019.06
    -
    2021.03
     

    和歌山県リサイクル製品認定審査会

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    国や地方自治体、他大学・研究機関等での委員

    委員,任期:2019年6月~2021年3月

  • 委員

    2019.04
    -
    2021.03
     

    和歌山市入札監視委員会

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    国や地方自治体、他大学・研究機関等での委員

    委員,任期:2019年4月~2021年3月

  • 委員

    2018.07
    -
    2020.03
     

    「農林水産分野における気候変動対応のための研究開発」運営委員会

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    国や地方自治体、他大学・研究機関等での委員

    委員,任期:2018年7月~2020年3月

  • 委員

    2018.05
    -
    2020.03
     

    近畿地方整備局和歌山県総合評価委員会

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    国や地方自治体、他大学・研究機関等での委員

    委員,任期:2018年5月~2020年3月

  • アドバイザー

    2018.02
    -
    Now
     

    平成29年度農林水産省委託プロジェクト研究「気候変動に対応した循環型食料生産等の確立のためのプロジェクト」における大課題「A-8漁業・養殖業に係る気候変動の影響評価」推進会議

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    国や地方自治体、他大学・研究機関等での委員

    アドバイザー,任期:2018年2月~

  • 鑑定人

    2017.12
    -
    2018.11
     

    和歌山地方裁判所

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    国や地方自治体、他大学・研究機関等での委員

    鑑定人,任期:2017年12月~2018年11月

  • 外部委員

    2017.11
    -
    2018.03
     

    農林水産省委託プロジェクト研究「農林水産分野における気候変動対応のための研究開発」A-8農林業に係る気候変動の影響評価

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    国や地方自治体、他大学・研究機関等での委員

    外部委員,任期:2017年11月~2018年3月

  • アドバイザー

    2017.10
    -
    Now
     

    平成29年度農林水産省委託プロジェクト研究「気候変動に対応した循環型食料生産等の確立のためのプロジェクト」における大課題「A-8漁業・養殖業に係る気候変動の影響評価」中間検討会

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    国や地方自治体、他大学・研究機関等での委員

    アドバイザー,任期:2017年10月~

  • 委員

    2017.08
    -
    2019.08
     

    和歌山県河川整備審議会

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    国や地方自治体、他大学・研究機関等での委員

    委員,任期:2017年8月~2019年8月

  • 委員

    2017.05
    -
    2018.03
     

    近畿地方整備局和歌山県総合評価委員会

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    国や地方自治体、他大学・研究機関等での委員

    委員,任期:2017年5月~2018年3月

  • 理事

    2017.04
    -
    2019.03
     

    日本水環境学会 関西支部 

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    学協会、政府、自治体等の公的委員

    関西支部の活動の補助,任期:2年

  • 委員

    2017.04
    -
    2019.03
     

    和歌山県リサイクル製品認定審査会

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    国や地方自治体、他大学・研究機関等での委員

    委員,任期:2017年4月~2019年3月

  • 委員

    2017.04
    -
    2019.03
     

    和歌山市入札監視委員会

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    国や地方自治体、他大学・研究機関等での委員

    委員,任期:2017年4月~2019年3月

  • アドバイザー

    2017.03
    -
    Now
     

    和歌山市合流式下水道緊急改善事業事後評価アドバイザー会議

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    国や地方自治体、他大学・研究機関等での委員

    アドバイザー

  • アドバイザー

    2017.02
    -
    Now
     

    平成28年度農林水産省委託プロジェクト研究「気候変動に対応した循環型食料生産等の確立のためのプロジェクト」における大課題「A-8漁業・養殖業に係る気候変動の影響評価」推進会議

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    国や地方自治体、他大学・研究機関等での委員

    アドバイザー

  • 委員

    2016.04
    -
    2020.03
     

    紀の川流域懇談会

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    国や地方自治体、他大学・研究機関等での委員

    委員,任期:2016年4月-2020年3月

  • 実行委員長

    2016.04
    -
    2018.03
     

    日本水環境学会 シンポジウム実行委員長

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    学協会、政府、自治体等の公的委員

    2017年水環境学会シンポジウムの開催運営,任期:2年

  • 委員

    2016.04
    -
    2017.07
     

    「水環境学会誌」編集企業部会

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    国や地方自治体、他大学・研究機関等での委員

    委員,任期:2016年4月-2017年7月

  • 委員

    2016.04
    -
    2017.03
     

    農林水産省委託プロジェクト研究「農林水産分野における気候変動対応のための研究開発」A-8農林業に係る気候変動の影響評価の外部委員

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    国や地方自治体、他大学・研究機関等での委員

    委員,任期:2016年4月-2017年3月

  • 委員

    2016.04
    -
    2017.03
     

    近畿地方整備局和歌山県総合評価委員会

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    国や地方自治体、他大学・研究機関等での委員

    委員,任期:2016年4月-2017年3月

  • 委員

    2015.05
    -
    2017.06
     

    和歌山県河川整備審議会

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    国や地方自治体、他大学・研究機関等での委員

    委員,任期:2015/05/26~2017/06/03

  • 委員

    2015.05
    -
    2017.04
     

    和歌山県環境審議会

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    国や地方自治体、他大学・研究機関等での委員

    委員,任期:2015/05/01~2017/04/30

  • 委員

    2015.05
    -
    2017.04
     

    和歌山県環境審議会

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    国や地方自治体、他大学・研究機関等での委員

    委員,任期:2015/05/01~2017/04/30

  • 委員

    2015.05
    -
    2017.03
     

    和歌山県リサイクル製品認定審査会

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    国や地方自治体、他大学・研究機関等での委員

    委員,任期:2015/05/25~2017/03/31

  • 委員

    2015.04
    -
    2017.03
     

    和歌山市入札監視委員会

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    国や地方自治体、他大学・研究機関等での委員

    委員,任期:2015/04/01~2017/03/31

  • 委員

    2015.04
    -
    2017.03
     

    研究成果最適展開支援プログラム

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    国や地方自治体、他大学・研究機関等での委員

    委員,任期:2015/04/21~2017/03/31

  • 委員

    2015.03
    -
    2015.04
     

    委託プロジェクト研究「温暖化適応・異常気象対応のための研究開発」

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    国や地方自治体、他大学・研究機関等での委員

    委員,任期:2015/03/27~2015/04/24

  • 外部委員

    2014.10
    -
    2016.03
     

    農林水産省委託プロジェクト研究「気候変動に対応した循環型食料生産の確立のための技術開発(農業分野における温暖化緩和技術の開発)」

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    国や地方自治体、他大学・研究機関等での委員

    外部委員,任期:2014/10/08~2016/03/31

  • 外部委員

    2014.10
    -
    2016.03
     

    独立行政法人農業環境技術研究所

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    国や地方自治体、他大学・研究機関等での委員

    外部委員,任期:2014/10/17~2016/03/31

  • 外部委員

    2014.10
    -
    2016.03
     

    農研機構 農村工学研究所研究に関する指導

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    国や地方自治体、他大学・研究機関等での委員

    外部委員,任期:2014/10/17~2016/3/31

  • 外部委員

    2014.10
     

    中央農業総合研究センター

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    国や地方自治体、他大学・研究機関等での委員

    外部委員,任期:2014/10/29~2014/10/30

  • 委員

    2014.08
    -
    2015.03
     

    和歌山河川国道事務所和歌山河川国道事務所かつらぎ西PA連結申請審査委員会

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    国や地方自治体、他大学・研究機関等での委員

    委員,任期:2014/08/25~2016/03/31

  • 委員

    2014.06
    -
    2016.07
     

    近畿地方整備局和歌山県域総合評価委員会

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    国や地方自治体、他大学・研究機関等での委員

    委員,任期:2014/06/26~2016/03/31

  • 委員

    2014.06
    -
    2016.03
     

    近畿地方整備局和歌山県域総合評価委員会

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    国や地方自治体、他大学・研究機関等での委員

    委員,任期:2014/06/26~2016/3/31

  • 委員

    2014.06
    -
    2015.07
     

    近畿地方整備局和歌山県域総合評価委員会

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    国や地方自治体、他大学・研究機関等での委員

    委員,任期:2014/06/18~2015/07/15

  • 委員

    2014.06
    -
    2015.07
     

    近畿地方整備局和歌山県域総合評価委員会

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    国や地方自治体、他大学・研究機関等での委員

    委員,任期:2014/06/26~2016/03/31

  • 委員

    2014.03
    -
    2018.02
     

    委託プロジェクト研究「気候変動に対応した循環型食料生産等の確立のためのプロジェクト」運営委員会

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    国や地方自治体、他大学・研究機関等での委員

    委員,任期:2014年3月-2018年2月

  • 外部委員

    2014.03
    -
    2018.02
     

    農林水産省「気候変動に対応した循環型食料生産等の確立のためのプロジェクト」運営委員会委員

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    国や地方自治体、他大学・研究機関等での委員

    外部委員,任期:2014/03/01~2018/02/28

  • 委員

    2013.12
    -
    2016.12
     

    紀の川流域懇談会

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    国や地方自治体、他大学・研究機関等での委員

    委員,任期:2013年12月-2016年12月

  • 委員

    2013.12
    -
    2016.12
     

    国土交通省近畿地方整備局 紀の川流域懇談会委員

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    国や地方自治体、他大学・研究機関等での委員

    委員,任期:2013/12/05~2016/12/04

  • 委員

    2013.12
    -
    2016.12
     

    紀の川流域懇談会

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    国や地方自治体、他大学・研究機関等での委員

    委員,任期:2013/12/05~2016/12/04

  • 委員

    2013.12
    -
    2015.11
     

    大阪府廃棄物処理施設等の設置に係る生活環境影響評価委員会

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    国や地方自治体、他大学・研究機関等での委員

    委員,任期:2013/12/02~2015/11/30

  • 委員

    2013.12
    -
    2015.11
     

    大阪府廃棄物処理施設等の設置に係る生活環境影響評価委員会委員

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    国や地方自治体、他大学・研究機関等での委員

    国や地方自治体、他大学・研究機関等での委員,任期:2013/12/02~2015/11/30

  • 委員長

    2013.11
    -
    2016.03
     

    和歌山県リサイクル製品認定審査会委員

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    国や地方自治体、他大学・研究機関等での委員

    委員長,任期:2013/11/05~2016/03/31

  • 委員

    2013.10
    -
    2014.03
     

    大和川水環境協議会アドバイザー

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    国や地方自治体、他大学・研究機関等での委員

    国や地方自治体、他大学・研究機関等での委員,任期:2013/10/25~2014/03/31

  • 委員長

    2013.09
    -
    2016.03
     

    入札監視委員会

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    国や地方自治体、他大学・研究機関等での委員

    委員長,任期:2013/09/05~2016/03/31

  • 委員

    2013.09
    -
    2015.03
     

    和歌山市入札監視委員会委員

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    国や地方自治体、他大学・研究機関等での委員

    国や地方自治体、他大学・研究機関等での委員,任期:2013/09/05~2015/03/31

  • 専門委員・書面審査員

    2013.08
    -
    2014.07
     

    特別研究員等審査会及び国際事業委員会

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    国や地方自治体、他大学・研究機関等での委員

    専門委員・書面審査員,任期:2013/08/01~2014/07/31

  • 委員

    2013.08
    -
    2014.07
     

    独立行政法人日本学術振興会 特別研究員等審査会専門委員及び国際事業委員会書面審査員

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    国や地方自治体、他大学・研究機関等での委員

    国や地方自治体、他大学・研究機関等での委員,任期:2013/08/01~2014/07/31

  • 委員

    2013.06
    -
    2014.03
     

    独立行政法人 農業環境技術研究所農林水産省委託プロジェクト研究「気候変動に対応した循環型食料生産等の確立のための技術開発(農業分野における温暖化緩和技術の開発)」の外部委員

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    国や地方自治体、他大学・研究機関等での委員

    国や地方自治体、他大学・研究機関等での委員,任期:2013/06/12~2014/03/31

  • 委員

    2013.06
    -
    2014.03
     

    独立行政法人農業環境技術研究所農林水産省委託プロジェクト研究「気候変動に対応した循環型食料生産等の確立のための技術開発(農林業に係る気候変動の影響評価の開発)」の外部委員

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    国や地方自治体、他大学・研究機関等での委員

    国や地方自治体、他大学・研究機関等での委員,任期:2013/06/12~2014/03/31

  • 委員

    2013.05
    -
    2015.05
     

    和歌山県河川整備審議会

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    国や地方自治体、他大学・研究機関等での委員

    委員,任期:2013/05/16~2015/05/15

  • 委員

    2013.05
    -
    2015.05
     

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    和歌山県県土整備部 和歌山県河川整備審議委員会

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    2013.04
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    委員,任期:2012/07/30~2014/12/31

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    国や地方自治体、他大学・研究機関等での委員,任期:2011/04/01~2013/03/31

  • 委員

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    2011.05
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  • 日本学術会議委員

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    2012.03
     

    内閣府 日本学術会議

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    国や地方自治体、他大学・研究機関等での委員

    日本学術会議委員,任期:2010.4~2012.3

  • 「地球温暖化が農林水産業に及ぼす影響評価と緩和及び適応技術の開発」 プロジェクト研究の運営委員会 外部委員

    2010.03
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    2014.12
     

    農林水産省

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    国や地方自治体、他大学・研究機関等での委員

    「地球温暖化が農林水産業に及ぼす影響評価と緩和及び適応技術の開発」 プロジェクト研究の運営委員会 外部委員 ,任期:2010.3~2014.12

  • 地球温暖化プロジェクト研究の審査員

    2010.03
     

    農林水産省

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    国や地方自治体、他大学・研究機関等での委員

    地球温暖化プロジェクト研究の審査員 ,任期:2010.3~2010.3

  • 和歌山県河川整備計画に係わる委員会

    2009.04
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    2012.12
     

    和歌山県

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    学協会、政府、自治体等の公的委員

    学協会、政府、自治体等の公的委員,任期:2009.4~2011.12

  • 和歌山県リサイクル製品認定審査会委員

    2009.03
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    2012.12
     

    和歌山県

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    学協会、政府、自治体等の公的委員

    学協会、政府、自治体等の公的委員,任期:2009.3~2011.12

  • 外部専門家  (温暖化)に関わる平成20年度農業系推進会議

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    独立行政法人 農業環境技術研究所

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    国や地方自治体、他大学・研究機関等での委員

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  • 博士論文審査

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  • 平成20年度「大学等地域貢献促進事業」審査会委員

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    国や地方自治体、他大学・研究機関等での委員

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    国や地方自治体、他大学・研究機関等での委員

    地球温暖化プロジェクト研究の審査員 ,任期:2008.3~2008.3

  • 湯浅御坊道路環境技術検討委員会

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    国土交通省 近畿地方整備局

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    国や地方自治体、他大学・研究機関等での委員

    湯浅御坊道路環境技術検討委員会 ,任期:2008.1~2010.3

  • 委員長

    2007.06
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    2011.03
     

    和歌山市 環境審議会

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    学協会、政府、自治体等の公的委員

    学協会、政府、自治体等の公的委員,任期:2007.6~2011.12

  • 日本学術会議委員

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    2008.06
     

    内閣府 日本学術会議事務局

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  • 紀南にふさわしい最終処分場を考える委員会委員及び技術アドバイザー会議委員

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  • 切目川ダム環境委員会委員

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    国や地方自治体、他大学・研究機関等での委員

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    国や地方自治体、他大学・研究機関等での委員

    県立公園あり方検討委員 委員長 ,任期:2006.8~2010.6

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    国や地方自治体、他大学・研究機関等での委員

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    社団法人 日本技術士会

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    近畿地方整備局

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    学協会、政府、自治体等の公的委員

    学協会、政府、自治体等の公的委員,任期:2004.10~2010.3

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    2004.05
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    和歌山県環境審議会 自然環境部会

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    委員長 ,任期:2004.5~2017.4

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    2004.05
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    和歌山県

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    国や地方自治体、他大学・研究機関等での委員

    環境審議会 自然環境部会委員長 ,任期:2004.5~2014.12

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    日本地下水理化学研究所

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    産業界、行政諸機関等と行った共同研究、新技術創出、コンサルティング等

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