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Development of non-traditional isotope proxies for groundwater hydrological study

Research Project

Project/Area Number 17K00527
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Environmental dynamic analysis
Research InstitutionKwansei Gakuin University

Principal Investigator

Tanimizu Masaharu  関西学院大学, 理工学部, 教授 (20373459)

Co-Investigator(Kenkyū-buntansha) 細野 高啓  熊本大学, 大学院先端科学研究部(理), 准教授 (30367065)
若木 重行  国立研究開発法人海洋研究開発機構, 超先鋭研究開発部門(高知コア研究所), 技術研究員 (50548188)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords地下水 / 同位体 / 質量分析 / 微量元素 / ICP / 阿蘇山 / 金属元素
Outline of Final Research Achievements

The flow velocity and direction of groundwater have been estimated mainly from hydraulic models, but the isotopic ratios of elements are useful to constrain the parameters independently. In this study, 7Li/6Li and 234U/238U isotope ratios dissolved in groundwater were analyzed to use as new isotopic proxies. Their spacial and temporal changes and trends in concentration and isotope ratio of groundwater in the Kumamoto area showed the usefulness of the isotopic proxies to detect small injection of sea water component or hydrothermal fluid, and groundwater mixing process, respectively.

Academic Significance and Societal Importance of the Research Achievements

地下水は、涵養から流出まで数年から数千年の時間がかかるため、汚染物質が一度混入すると、その除去には膨大な費用と時間が必要となる。熊本市域地下水の例では、上昇傾向にあった硝酸性窒素の濃度は、さまざまな努力により近年減少傾向に向かっているが、その混入起源物質や混入域の特定には完全には至っていない。このような地下水中に混入した人為起源物質の移行を把握し、さらに元素の地下水中での挙動を正しく把握するために、本研究で確立した溶存微量元素の同位体指標による地下水流動の解析は、有用であると考えられる。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (21 results)

All 2020 2019 2018 2017

All Journal Article (5 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 5 results,  Open Access: 3 results) Presentation (16 results) (of which Int'l Joint Research: 9 results,  Invited: 1 results)

  • [Journal Article] Changes of groundwater flow systems after the 2016 Mw 7.0 Kumamoto earthquake deduced by stable isotopic and CFC-12 compositions of natural springs2020

    • Author(s)
      Ide Kiyoshi、Hosono Takahiro、Kagabu Makoto、Fukamizu Keisuke、Tokunaga Takahiro、Shimada Jun
    • Journal Title

      Journal of Hydrology

      Volume: 583 Pages: 124551-124551

    • DOI

      10.1016/j.jhydrol.2020.124551

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Recovery of lost nexus synergy via payment for environmental services in Kumamoto, Japan2019

    • Author(s)
      Taniguchi, M.、Burnett, K.、Shimada, J.、Hosono, T.、Wada, C.A.、Ide, K.
    • Journal Title

      Frontiers in Environmental Science

      Volume: 7 Pages: 28-28

    • DOI

      10.3389/fenvs.2019.00028

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Sequential chemical separation of Sr, Nd and Pb from geological samples using multi-step extraction column chromatography2018

    • Author(s)
      若木重行、川合達也、永石一弥、石川剛志
    • Journal Title

      JAMSTEC Report of Research and Development

      Volume: 27 Issue: 0 Pages: 1-12

    • DOI

      10.5918/jamstecr.27.1

    • NAID

      130007506144

    • ISSN
      1880-1153, 2186-358X
    • Year and Date
      2018-09-01
    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] A Rapid and Precise Determination of Boron Isotope Ratio in Water and Carbonate Samples by Multiple Collector ICP-MS2018

    • Author(s)
      Tanimizu, M.、Nagaishi, K.、Ishikawa, T.
    • Journal Title

      Analytical Sciences

      Volume: 34 Issue: 6 Pages: 667-674

    • DOI

      10.2116/analsci.18SBP05

    • NAID

      130007395544

    • ISSN
      0910-6340, 1348-2246
    • Year and Date
      2018-06-10
    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] On the use of coprostanol to identify source of nitrate pollution in groundwater2017

    • Author(s)
      Nakagawa Kei、Amano Hiroki、Takao Yuji、Hosono Takahiro、Berndtsson Ronny
    • Journal Title

      Journal of Hydrology

      Volume: 550 Pages: 663-668

    • DOI

      10.1016/j.jhydrol.2017.05.038

    • NAID

      120006987495

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Coseismic hydroenvironmental changes in response to 2016 Mw 7.0 Kumamoto crustal earthquake, southern Japan: insights from multidisciplinary approaches2019

    • Author(s)
      Hosono, T., Manga, M., Wang, C.-Y. and Working Group of Japanese Association for Groundwater Hydrology
    • Organizer
      AGU Fall Meeting 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Distribution and formation of highly saline water in the northwest plain of Aso caldera, south Japan2019

    • Author(s)
      Okamura, K., Hosono, T., Romero-Mujalli, G., Amann, T., Louvat, P., Hartmann, J.
    • Organizer
      Goldschmidt Conference 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 海水Ba安定同位体組成の高精度分析法の開発2019

    • Author(s)
      若木重行、手塚勇輝、宮崎隆、堀川恵司
    • Organizer
      2019年度日本地球化学会年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Trace of anthropogenic nitrate in groundwater by isotopic proxies in Kumamoto area2019

    • Author(s)
      Sugimoto, N.、Sakiyama, M.、Hosono, T.、Tanimizu, M.
    • Organizer
      European Winter Conference on Plasma Spectrochemistry 2019
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] B-Li isotope systematic of groundwater for water flow proxy2018

    • Author(s)
      Sugimoto, N.、Hosono, T.、Tanimizu, M.
    • Organizer
      Resources for Future Generations 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Deciphering downward movement of nitrate through volcanic unsaturated formation using high composition δ15N and δ18O tracers2018

    • Author(s)
      Boateng, D.、Hosono, T.、Okumura, A.、Sakiur Rahman, A.T.M.、Shimada J.
    • Organizer
      45th IAH Congress
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Fully Coupled Surface and Subsurface Flow Simulation with Model Validation Using Stable Isotopes and Tracer of Kumamoto Region in Japan2018

    • Author(s)
      Sakiur Rahman, A.T.M.、Hosono, T.、Tawara, Y.、Boateng, D.、Shimada, J.
    • Organizer
      45th IAH Congress
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] δ11B-δ7Li 同位体指標を用いた地下水の起源推定と熊本地震の影響評価2018

    • Author(s)
      杉本直人、先山正祐、細野高啓、谷水雅治
    • Organizer
      2018年度日本地球化学会年会
    • Related Report
      2018 Research-status Report
  • [Presentation] 微量元素濃度組成と金属元素同位体比からみた熊本地域地下水の地域的特徴と熊本地震による影響評価2018

    • Author(s)
      Sugimoto, N.、Tanimizu, M.、Hosono, T.
    • Organizer
      日本地球惑星科学連合2018年大会
    • Related Report
      2018 Research-status Report
  • [Presentation] 地下温度の繰返し測定による熊本地域の地下水流動変化の検討-2017・2018年測定値と過去データの比較2018

    • Author(s)
      宮越昭暢、谷口真人、井手淨、奥村梓、利部慎、細野高啓、嶋田純
    • Organizer
      日本地球惑星科学連合2018年大会
    • Related Report
      2018 Research-status Report
  • [Presentation] Origin of groundwater in Kumamoto city estimated from multipe stable isotope proxies (B, Li, O H)2017

    • Author(s)
      Sugimoto N.、Hosono T.、Tanimizu M.
    • Organizer
      Asia-Pacific Winter Conference on Plasma Spectrochemistry
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 微量元素B,Liからみた熊本市地下水の起源解析2017

    • Author(s)
      杉本直人、細野高啓、谷水雅治
    • Organizer
      日本分析化学会66回年会
    • Related Report
      2017 Research-status Report
  • [Presentation] 阿蘇山西麓域における同位体指標B,Liを用いた地下水の起源推定2017

    • Author(s)
      杉本直人、細野高啓、谷水雅治
    • Organizer
      2017年度日本質量分析学会同位体比部会
    • Related Report
      2017 Research-status Report
  • [Presentation] 環境試料の高精度ホウ素同位体比測定に関する分析条件の最適化2017

    • Author(s)
      谷水雅治
    • Organizer
      日本分析化学会66回年会
    • Related Report
      2017 Research-status Report
  • [Presentation] Behaviors of nitrate in unsaturated zone in groundwater recharge area in Kumamoto, southern Japan2017

    • Author(s)
      Okumura A.、Hosono T.、Shimada J.
    • Organizer
      44th IAH Congress Groundwater Heritage and Sustainability
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Nitrate behaviors and its transportation time scale in unsaturated zone under farmlands with different fertilization log in Kumamoto region2017

    • Author(s)
      Okumura A.、Hosono T.、Shimada J.
    • Organizer
      European Geosciences Union General Assembly 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research

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Published: 2017-04-28   Modified: 2021-02-19  

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