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Processes of sediment production from large landslides in humid and tectonically active mountains

Research Project

Project/Area Number 19K01156
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 04010:Geography-related
Research InstitutionNiigata University

Principal Investigator

Nishii Ryoko  新潟大学, 災害・復興科学研究所, 准教授 (00596116)

Co-Investigator(Kenkyū-buntansha) 今泉 文寿  静岡大学, 農学部, 教授 (80378918)
早川 裕弌  北海道大学, 地球環境科学研究院, 准教授 (70549443)
Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2019: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords湿潤変動帯 / 大規模崩壊地 / 土砂生産 / 航空レーザ測量 / ドローン測量 / 重力性変形地形 / 南アルプス
Outline of Research at the Start

湿潤変動帯に位置する日本列島は,世界的にも高い削剥速度を有していることが,ダムの堆砂量などから明らかにされている。そのような高い削剥速度を維持するための土砂生産プロセスについて,これまで,大規模崩壊(の発生)による寄与が大きいと考えられてきた。しかし,近年の研究成果によって,南アルプスに分布する大規模崩壊地では,大規模崩壊地形成後の継続的な土砂生産による削剥速度が非常に高く,流域の主要な土砂生産源の可能性が示された。そこで,本研究では,南アルプスを対象に,航空レーザ測量データや無人航空機による写真測量技術,現地観測を組み合わせ,大規模崩壊地における活発な土砂生産プロセスの実態解明を目指す。

Outline of Final Research Achievements

To clarify persistent sediment supply from large landslide scars after the original events, we examined spatial distribution and sediment supply processes of large landslides in Hayakawa River basin, southern Japanese Alps. Geomorphological analysis using airborne LiDAR data in 2009 and 2015 and maps in 1910s revealed spatial distribution and volume lost of large landslides. Persistent type of landslides has more impact on sediment supply into Hayakawa River basin than new landslides. In addition, we discussed dynamics of sediment supply based on on-site meteorological monitoring and UAV surveys in Shichimensan-kuzure.

Academic Significance and Societal Importance of the Research Achievements

湿潤変動帯の大起伏山地において,既存の大規模崩壊地からの継続的な土砂生産の寄与度とその重要性については必ずしも十分に評価されていなかった。本研究によって,既存の大規模崩壊地は流域の主要な土砂生産源であることが明らかになった。大規模崩壊地での土砂生産の実態解明は,山地の土砂生産システムのさらなる理解に貢献するとともに,流域の適切な砂防計画・対策を行う上で重要な知見となることが期待できる。

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (19 results)

All 2022 2021 2020 2019

All Journal Article (6 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 6 results,  Open Access: 4 results) Presentation (13 results) (of which Int'l Joint Research: 4 results,  Invited: 3 results)

  • [Journal Article] Debris flow disaster in Atami, Japan, in July 20212022

    • Author(s)
      Imaziumi, F., Osanai, N., Jato, S., Koike, M., Kosugi, K., Sakai, Y., Sakaguchi, H., Satofuka, Y., Takayama, S., Tanaka, T., Nishi, Y.
    • Journal Title

      International Journal of Erosion Control Engineering

      Volume: 15 Issue: 1 Pages: 1-6

    • DOI

      10.13101/ijece.15.1

    • ISSN
      1882-6547
    • Year and Date
      2022-06-06
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Influence of sampling design on landslide susceptibility modeling in lithologically heterogeneous areas2022

    • Author(s)
      Dornik, A., Dragut, L., Oguchi, T., Hayakawa, Y., Micu, M.
    • Journal Title

      Scientific Reports

      Volume: 12 Issue: 1 Pages: 2106-2106

    • DOI

      10.1038/s41598-022-06257-w

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Methods to reduce the doming effect of three-dimensional model without GCPs in RTK-UAV surveys2021

    • Author(s)
      小花和宏之・早川裕弌・坂上清一
    • Journal Title

      Journal of the Japanese Agricultural Systems Society

      Volume: 37 Issue: 2 Pages: 29-38

    • DOI

      10.14962/jass.37.2_29

    • ISSN
      0913-7548, 2189-0560
    • Year and Date
      2021-09-25
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Temporal changes in the debris flow threshold under the effects of ground freezing and sediment storage on Mt. Fuji2021

    • Author(s)
      Imaizumi, F., Ikeda, A., Yamamoto, K., Ohsaka, O.
    • Journal Title

      Earth Surface Dynamics

      Volume: 9 Issue: 6 Pages: 1381-1398

    • DOI

      10.5194/esurf-9-1381-2021

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Interpreting rockfall activity on an outcrop?talus slope system in the southern Japanese Alps using an integrated survey approach2020

    • Author(s)
      Imaizumi Fumitoshi、Trappmann Daniel、Matsuoka Norikazu、Ballesteros C?novas Juan Antonio、Yasue Koh、Stoffel Markus
    • Journal Title

      Geomorphology

      Volume: 371 Pages: 107456-107456

    • DOI

      10.1016/j.geomorph.2020.107456

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Initiation and runout characteristics of debris flow surges in Ohya landslide scar, Japan2019

    • Author(s)
      Imaizumi Fumitoshi、Masui Takeshi、Yokota Yushi、Tsunetaka Haruka、Hayakawa Yuichi S.、Hotta Norifumi
    • Journal Title

      Geomorphology

      Volume: 339 Pages: 58-69

    • DOI

      10.1016/j.geomorph.2019.04.026

    • NAID

      120006775039

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] 南アルプスにおける大規模崩壊地からの継続的な土砂生産の重要性2022

    • Author(s)
      西井稜子、今泉文寿、早川裕弌
    • Organizer
      Japan Geoscience Union Meeting 2022
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Runout characteristics of debris flow under effects of ground freezing on Mt. Fuji2022

    • Author(s)
      Imaizumi, F., Yamamoto, R., Ikeda, A.
    • Organizer
      Japan Geoscience Union 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 多次元高精細地表情報(MHESD)の地球科学・歴史考古学における高度利活用2022

    • Author(s)
      早川裕弌・齋藤 仁・小倉拓郎
    • Organizer
      JHPCN学際大規模情報基盤共同利用・共同研究拠点第14回シンポジウム
    • Related Report
      2022 Annual Research Report
  • [Presentation] 大谷崩におけ る土石流の流動形態と間隙水圧の関係2021

    • Author(s)
      大屋俊祐、今泉文寿、堀田紀文、經隆悠、早川裕弌
    • Organizer
      令和3年度砂防学会研究発表会
    • Related Report
      2021 Research-status Report
  • [Presentation] 不飽和河床上における土石流の発生・発達過程に関する実験的研究2021

    • Author(s)
      高山翔揮、今泉文寿、里深好文
    • Organizer
      令和3年度砂防学会研究発表会
    • Related Report
      2021 Research-status Report
  • [Presentation] 富士山大沢川における土砂流出形態と侵食堆積特性の関係2021

    • Author(s)
      今泉文寿、山本蓮、池田敦、逢坂興宏、柏原佳明、西村直記
    • Organizer
      令和3年度砂防学会研究発表会
    • Related Report
      2021 Research-status Report
  • [Presentation] 渓床堆積物の堆積状況と降雨条件が土石流段波の流動形態に及ぼす影響2020

    • Author(s)
      大屋俊祐,今泉文寿,逢坂興宏,早川裕弌,經隆悠,堀田紀文
    • Organizer
      2020年度砂防学会研究発表会概要集
    • Related Report
      2020 Research-status Report
  • [Presentation] 高精細地形情報を用いた山岳斜面 プロセスの地形学的研究2020

    • Author(s)
      早川裕弌・今泉文寿・堀田紀文・西井稜子
    • Organizer
      Japan Geoscience Union - American Geophysical Union Joint Meeting 2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] LiDAR データを用いた大規模崩壊地群における土砂生産の把握2019

    • Author(s)
      西井稜子,今泉文寿
    • Organizer
      日本地形学連合2019 年秋季大会
    • Related Report
      2019 Research-status Report
  • [Presentation] 干渉SAR解析を用いた大規模崩壊地周辺における重力変形の抽出2019

    • Author(s)
      加瀬篤実,今泉文寿,逢坂興宏,西井稜子,横山修,千木良雅弘
    • Organizer
      2019年度砂防学会研究発表会
    • Related Report
      2019 Research-status Report
  • [Presentation] 山岳砂礫堆積域における土石流の発生流下特性2019

    • Author(s)
      今泉文寿,早川裕弌,經隆悠,堀田 紀文
    • Organizer
      Japan Geoscience Union 2019
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] Spatial distribution of land surface displacements in the crater of Tateyama Midagahara Volcano using high-definition topographic data2019

    • Author(s)
      Hayakawa, Y.S., Kusumoto, S., Ogura, T.
    • Organizer
      Japan Geoscience Union International Meeting 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] TLS measurement data and 3D printing of an artificial cave for geotechnical and educational applications2019

    • Author(s)
      Hayakawa, Y.S., Ogura, T., Tamura, Y., Oguchi, C.T., Shimizu, K.
    • Organizer
      Japan Geoscience Union International Meeting 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

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Published: 2019-04-18   Modified: 2024-01-30  

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