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The ability of sand and gravel bars to trap and discharge muddy sediments affecting the redeposition of undecontaminated forest soils: a fluvial geomorphological study

Research Project

Project/Area Number 18K11631
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 63010:Environmental dynamic analysis-related
Research InstitutionUniversity of Tsukuba (2020)
福島県環境創造センター (2018-2019)

Principal Investigator

Taniguchi Keisuke  筑波大学, アイソトープ環境動態研究センター, 研究員 (80774794)

Co-Investigator(Kenkyū-buntansha) 遠藤 徳孝  金沢大学, 地球社会基盤学系, 准教授 (60314358)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords放射性セシウム / 河川 / 堆積物 / 混合粒径 / 粒度分布 / 河川地形 / ベッドフォーム / 泥質堆積物 / 数値モデル
Outline of Final Research Achievements

The purpose of this study was to evaluate the ability of sand and gravel bars to internalize fine-grained particles using radiocesium, which is selectively adsorbed by fine-grained particles. We summarized the migration of radiocesium in rivers in Fukushima, observed the flooded area of a sand and gravel bar by fixed-point cameras, and made a digital elevation map by a UAV. Then, we conducted flume experiments and numerical simulations.

Academic Significance and Societal Importance of the Research Achievements

本研究の過程で得られた、福島県の主要河川における放射性セシウム動態のデータベースは、筑波大学のサイトで広く公開され、河川や海洋への放射性セシウムの移行に関する研究で広く利用されるものとなった。また、2019年台風19号出水直後の河川における観測で得られた地形変化データは、福島県環境創造センターにおいて、洪水による浸水エリアにおける放射性セシウムによる再汚染が少ないことを確認するデータとして使用された。

Report

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

    (5 results)

All 2020 2019

All Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (4 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] Dataset on the 6-year radiocesium transport in rivers near Fukushima Daiichi nuclear power plant2020

    • Author(s)
      Taniguchi Keisuke、Onda Yuichi、Smith Hugh G.、Blake William、Yoshimura Kazuya、Yamashiki Yosuke、Kuramoto Takayuki
    • Journal Title

      Scientific Data

      Volume: 7 Issue: 1 Pages: 433-433

    • DOI

      10.1038/s41597-020-00774-x

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Elevation change in a river park flooded by the typhoon Hagibis in 20192020

    • Author(s)
      Taniguchi, K., Arai, H., Yoshita, H., Fujita, K., Yamasaki, T. And Rndo, N.
    • Organizer
      JpGU-AGU Joint Meeting 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 福島における放射性物質分布調査(16)懸濁態放射性セシウムを用いたダムによる細粒粒子の捕捉能の評価2020

    • Author(s)
      谷口圭輔, 恩田裕一, 新井宏受, 竹内幸生, 吉田博文, 藤田一輝
    • Organizer
      日本原子力学会2020年秋の大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 2019年台風19号により冠水した河川公園の地形変化2020

    • Author(s)
      谷口 圭輔、新井 宏受、吉田 博文、藤田 一輝、山崎 琢平、前川 暁洋、遠藤 徳孝
    • Organizer
      JpGU-AGU Joint Meeting 2020
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Riverine radiocesiumdynamics in two rivers affected by the Fukushima Daiichi Nuclear Power Plant accident2019

    • Author(s)
      Keisuke Taniguchi, HirotsuguArai, Hirofumi Yoshita, Kazuki Fujita, Takayuki Kuramoto, Yuichi Onda, Yasuo Onishi
    • Organizer
      AGU Fall Meeting 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research

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Published: 2018-04-23   Modified: 2022-01-27  

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