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Recharge process of water resources associated with snowmelt in alpine areas focusing on the residence time of water

Research Project

Project/Area Number 19K13433
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 04010:Geography-related
Research InstitutionShinshu University

Principal Investigator

Sakakibara Koichi  信州大学, 学術研究院理学系, 助教 (40821799)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords高山帯 / 雪氷融解 / 水涵養 / 水流出 / トレーサー / 土地被覆 / 雪渓後退 / 端成分 / 水資源涵養 / 水貯留 / 植生 / 高山域 / 流出 / 雪氷 / 水の安定同位体比 / 水の滞留時間 / 安定同位体比
Outline of Research at the Start

中~高緯度の高山地域では,水資源涵養に対して雪氷融解水の果たす役割が重要である.しかしながら,高山地域における雪氷融解水がどのように水資源涵養に寄与しているかを定量的に解明した研究はほとんどない.そこで本研究は,乗鞍岳山頂流域を対象とし,雪渓後退速度の直接的計測,トレーサー法による湧水滞留時間の推定と湧水に対する融雪水の寄与率算出を高時間精度で行うことで雪氷融解に伴う水資源涵養機構を明らかにする.国内最大級の積雪量を有する当該地域における研究成果は,持続的水資源利用の政策決定に幅広く寄与できるだけでなく,下流地域における洪水発生予測・被害低減という防災の面にも波及効果をもたらすと期待される.

Outline of Final Research Achievements

Hydrological observations, water sampling, and chemical/isotopic analyses were conducted in the alpine area above the forest limit to clarify the mechanism of water recharge and discharge associated with snowmelt in headwaters of the alpine zone. The results suggest that the dominant factors controlling water runoff and recharge in the alpine zone are short-term accumulated precipitation and the supply of snowmelt water. The application of a tracer-based component separation method revealed that the components of runoff water change from snow/ice and precipitation to groundwater and soil water as the snow/ice retreats during the summer season. Furthermore, the distinctly different water quality and isotopic ratios of runoff between vegetated and bare areas indicated that land cover conditions may determine the water storage function in alpine zones.

Academic Significance and Societal Importance of the Research Achievements

気候変動の影響を受けやすい高山帯は極めて多い降水量を有し,下流域に豊富な水資源を供給する.本研究は,これまで,実測による研究例が少なかった高山帯水文学研究に現地観測を主手法として取り組んだ.水涵養・流出過程の定性的・定量的解析を実施することで,雪氷融解・短期積算降水量・土地被覆が高山帯水循環を主に制御することを示唆した.本研究成果は,水資源賦存量の将来予測技術の向上や近年頻発する土砂災害・洪水の予測・警報システム開発という防災の面に貢献でき,学術的のみならず社会的に意義があると考えられる.

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (23 results)

All 2022 2021 2020 2019

All Journal Article (6 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (17 results) (of which Int'l Joint Research: 5 results)

  • [Journal Article] Controlling Factors and Characteristics of Peak Runoff in an Alpine Headwater Under the Asian Monsoon Climate2022

    • Author(s)
      Sakakibara Koichi, Suzuki Keisuke
    • Journal Title

      Mountain Research and Development

      Volume: 42 Issue: 2

    • DOI

      10.1659/mrd-journal-d-21-00030.1

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 諏訪湖流域における地下水の滞留時間推定と水資源の持続性評価2021

    • Author(s)
      榊原厚一, 堀瑞季, 宮原裕一, 鈴木啓助
    • Journal Title

      国土地理協会報告

      Volume: 6 Pages: 1-12

    • Related Report
      2020 Research-status Report
  • [Journal Article] 名水を訪ねて, 信州・上高地の水2021

    • Author(s)
      榊原厚一, 鈴木啓助
    • Journal Title

      地下水学会誌

      Volume: 63 Pages: 19-27

    • Related Report
      2020 Research-status Report
  • [Journal Article] 高山源流部・一次流域における水文観測をベースとした水流出・地下水循環研究2020

    • Author(s)
      榊原厚一, 鈴木啓助
    • Journal Title

      日本水文科学会誌

      Volume: 50 Pages: 99-103

    • NAID

      130007897385

    • Related Report
      2020 Research-status Report
  • [Journal Article] Dissolved 137Cs concentrations in stream water and subsurface water in a forested headwater catchment after the Fukushima Dai-ichi Nuclear Power Plant accident.2019

    • Author(s)
      Iwagami, S., Tsujimura, M., Onda, Y., Konuma, R., Satou, Y., Sakakibara, K., Yoschenko, V.
    • Journal Title

      Journal of Hydrology

      Volume: 573 Pages: 688-696

    • DOI

      10.1016/j.jhydrol.2019.04.019

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] 森林流域の地下水をはかる2019

    • Author(s)
      榊原厚一
    • Journal Title

      森林科学

      Volume: 87 Pages: 32-33

    • NAID

      130007733009

    • Related Report
      2019 Research-status Report
  • [Presentation] 北アルプス・乗鞍岳高山帯におけるピーク流出発生の特徴とその制御要因の解明2021

    • Author(s)
      榊原厚一, 鈴木啓助
    • Organizer
      日本地下水学会2021年春季講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] マルチトレーサーを用いた八ヶ岳西麓から諏訪湖に至る地域地下水流動系の解明2021

    • Author(s)
      堀瑞季, 榊原厚一, 宮原裕一, 鈴木啓助
    • Organizer
      日本地下水学会2021年春季講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 流出水の水質・同位体比特性から推定される高山帯植生部の水貯留機能2021

    • Author(s)
      藤野真優, 榊原厚一, 鈴木啓助
    • Organizer
      水文・水資源学会/日本水文科学会2021年度研究発表会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 森林源流域における降雨流出時の河畔部飽和帯を介した水流出過程2021

    • Author(s)
      長幡嘉健, 榊原厚一, 宮原裕一, 鈴木啓助
    • Organizer
      日本地下水学会2021年秋季講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 火山性緩斜面流域において流域特性が地下水涵養・流動過程に与える影響2021

    • Author(s)
      堀瑞季, 榊原厚一, 宮原裕一, 鈴木啓助
    • Organizer
      日本地下水学会2021年秋季講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Clarification of cause of temporal tracer variations in spring water, Kamikochi, Shinshu2020

    • Author(s)
      Yoshitake Nagahata, Koichi Sakakibara, Keisuke Suzuki
    • Organizer
      Japan Geoscience Union (JpGU) Meeting 2020
    • Related Report
      2020 Research-status Report
  • [Presentation] Hydraulic connectivity between groundwater and surface water in Suwa region, Japan2020

    • Author(s)
      Mizuki Hori, Koichi Sakakibara, Yuichi Miyabara, Keisuke Suzuki
    • Organizer
      Japan Geoscience Union (JpGU) Meeting 2020
    • Related Report
      2020 Research-status Report
  • [Presentation] リターから溶出した放射性セシウムの流出水への寄与2020

    • Author(s)
      榊原厚一, 岩上翔, 辻村真貴, 小沼亮平, 佐藤雄太郎, 恩田裕一
    • Organizer
      日本地球化学会第67回オンライン年会
    • Related Report
      2020 Research-status Report
  • [Presentation] Water circulation processes based on spatial variations of environmental tracers in the mildly acidic deep lake, Japan2019

    • Author(s)
      Koichi Sakakibara, Sae Mizushima, Hodong Park, Yoshikuni Hodoki, Maki Tsujimura
    • Organizer
      American Geophysical Union (AGU) Fall Meeting 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Groundwater recharge processes in a complex aquifer system of the Lake Suwa watershed, Japan2019

    • Author(s)
      Mizuki Hori, Koichi Sakakibara, Yuichi Miyabara
    • Organizer
      American Geophysical Union (AGU) Fall Meeting 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Understanding water circulation with tritium-tracer measurements in selected catchments across Japan2019

    • Author(s)
      Maksym Gusyev, Yoshito Kikumori, Masatoshi Denda, Shigeru Mizugaki, Isao Machida, Naofumi Akata, Koichi Sakakibara, Maki Tsujimura, Yuki Imaizumi, Uwe Morgenstern, Michael K Stewart
    • Organizer
      Symposium on Isotope Hydrology: Advancing the Understanding of Water Cycle Processes CN-271, International Atomic Energy Agency (IAEA)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Spatial and temporal variation of residence time and microbe in spring and groundwater at headwater catchments2019

    • Author(s)
      Maki Tsujimura, Chisato Yamamoto, Yuki Imaizumi, Koichi Sakakibara, Ayumi Sugiyama, Kosuke Nagano, Kenji Kato, Yuichi Onda
    • Organizer
      European Geosciences Union (EGU) General Assembly 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Long term temporal change of sulfur hexafluoride concentration in spring water at a forested headwater catchment2019

    • Author(s)
      Kosuke Nagano, Maki Tsujimura, Koichi Sakakibara, Ayumi Sugiyama, Sho Iwagami, Yuichi Onda
    • Organizer
      European Geosciences Union (EGU) General Assembly 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 上高地湧水における環境トレーサーの時間変化特性の解明2019

    • Author(s)
      長幡嘉健, 榊原厚一, 鈴木啓助
    • Organizer
      日本山の科学会2019年秋季研究大会
    • Related Report
      2019 Research-status Report
  • [Presentation] 水質・同位体トレーサーを用いた田沢湖湖水の起源の解明2019

    • Author(s)
      水嶋彩恵, 榊原厚一, 朴虎東
    • Organizer
      2019年度日本水文科学会学術大会
    • Related Report
      2019 Research-status Report
  • [Presentation] 山岳域から河口に至る信濃川河川水の水質・同位体比の空間分布特性の解明2019

    • Author(s)
      吉田暁人, 増本泰河, 伊藤拓生, 林穣, 榊原厚一
    • Organizer
      2019年度日本水文科学会学術大会
    • Related Report
      2019 Research-status Report
  • [Presentation] 福島第一原子力発電所事故後の福島県内山地源流域におけるトリチウム・フロン類を用いた地下水の年代推定2019

    • Author(s)
      榊原厚一, 岩上翔, 辻村真貴, 安部豊, 羽田真奈美, Pun Ishwar, 恩田裕一
    • Organizer
      Japan Geoscience Union (JpGU) Meeting 2019
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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