• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Development of a quantitative reconstruction method for paleotemperature in freshwater lakes during the Holocene Climatic Optimum

Research Project

Project/Area Number 18K03763
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 17030:Human geosciences-related
Research InstitutionThe University of Shiga Prefecture

Principal Investigator

DOMITSU Hanako  滋賀県立大学, 環境科学部, 准教授 (70397206)

Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2018: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywordsセタシジミ / 成長線解析 / 酸素同位体比分析 / 完新世 / 貝殻 / 成長線 / 酸素同位体比
Outline of Final Research Achievements

The purpose of this study was to develop a quantitative reconstruction method for paleotemperature in freshwater lakes. We carried out sclerochronological and oxygen isotope analyses of Corbicula sandai shells from Lake Biwa, Japan. As a result, it was found that the growth history of Corbicula sandai and the ambient paleoenvironmental information are recorded as the growth lines in cross-section of the shell. The paleotemperature equation based on oxygen isotope ratios of Corbicula sandai shell was successfully established.

Academic Significance and Societal Importance of the Research Achievements

陸域の温度指標が限られるなか,琵琶湖の表層水温は気温の変化に同調することから,過去の琵琶湖の表層水温の変動記録は当時の内陸部の気温変動を推定する有力な手がかりになると期待される.本研究で開発した水温換算式によって琵琶湖の表層水温を高分解能で定量的に復元することが可能となったことから,今後,琵琶湖の環境変遷史に加え,日本列島の気候記録,とくに気温について新たな知見を得られる可能性がある.

Report

(5 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (2 results)

All 2022

All Presentation (2 results)

  • [Presentation] 琵琶湖産現生セタシジミの殻の酸素同位体比2022

    • Author(s)
      瀬戸川正和・堂満華子・坂井三郎・尾坂兼一・勝山正則
    • Organizer
      日本古生物学会第171回例会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 完新世の琵琶湖水温の定量的復元法の開発2022

    • Author(s)
      瀬戸川正和・堂満華子・坂井三郎・尾坂兼一・勝山正則
    • Organizer
      第6回金沢大学環日本海域環境研究センター連携部門国際テーマシンポジウム「東アジアの農村社会・都市社会をめぐる環境とその発展」
    • Related Report
      2021 Annual Research Report

URL: 

Published: 2018-04-23   Modified: 2023-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi