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Spatial distribution of water balance components of Lake Kasumigaura and its change over 40 years

Research Project

Project/Area Number 15K01159
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Geography
Research InstitutionUniversity of Tsukuba

Principal Investigator

SUGITA Michiaki  筑波大学, 生命環境系, 教授 (80235887)

Project Period (FY) 2015-10-21 – 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: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Keywords熱収支 / 水収支 / 霞ヶ浦 / 湖沼 / 水文 / 土地利用変化
Outline of Final Research Achievements

We determined the current water balance of Lake Kasumigaura by combining available data such as river discharge and our own estimates of lake evaporation, agricultural water use, etc. The results were compared with the estimates in the past. It was found that natural hydrologic components such as precipitation, evaporation, and river discharge were not very different while artificial water use such as industrial water or domestic water increased due to change in watershed population and social structure.

Academic Significance and Societal Importance of the Research Achievements

本研究の結果,気候変化や土地利用変化の影響が大きくは霞ヶ浦の水収支に影響を与えていないことがわかり,これは水資源量の増減による社会生活への影響を考慮しなくてもさしあたり問題がないことを示している.また,湖の水収支は扱う項目が多岐にわたり,きちんと推定されていない場合がほとんどであるが,本研究はそれを行った点,過去と比較した点に学術的な意義がある.また,個々の項目を推定する上で得られた新しい知見,今後の研究につながる課題を見いだした点も重要である.

Report

(6 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (6 results)

All 2020 2019 2018 2015

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (4 results) (of which Invited: 1 results)

  • [Journal Article] Spatial variability of the surface energy balance of Lake Kasumigaura and implications for flux measurements.2020

    • Author(s)
      Sugita, M.
    • Journal Title

      Hydrological Sciences Journal

      Volume: 65 Issue: 3 Pages: 410-414

    • DOI

      10.1080/02626667.2019.1701676

    • NAID

      120007133036

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] International Collaboration and Cooperation through Researches of Hydrologic Science2015

    • Author(s)
      杉田倫明
    • Journal Title

      Journal of Japanese Association of Hydrological Sciences

      Volume: 45 Issue: 3 Pages: 73-84

    • DOI

      10.4145/jahs.45.73

    • NAID

      130005108727

    • ISSN
      1342-9612, 1883-7166
    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 霞ヶ浦西浦における水面熱収支の時空間変化2019

    • Author(s)
      杉田倫明・小川信平・河出麻里奈
    • Organizer
      日本水文科学会2019年度学術大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Radiation, energy and water balance of a shallow, medium-sized lake in humid environments2019

    • Author(s)
      Sugita, M.
    • Organizer
      Guest lecture, School of Engineering of Nazarbayev University
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] 霞ヶ浦の水循環と水収支2018

    • Author(s)
      杉田 倫明
    • Organizer
      第17回世界湖沼会議
    • Related Report
      2018 Research-status Report
  • [Presentation] 霞ヶ浦と山中湖における湖沼水収支の全項目解明の試み2018

    • Author(s)
      杉田 倫明
    • Organizer
      平成30年度第4回水資源セミナー
    • Related Report
      2018 Research-status Report

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Published: 2015-10-21   Modified: 2021-02-19  

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