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Geological landslide hazard analyses for lacustrine coastal and shallow area

Research Project

Project/Area Number 18H01287
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 17030:Human geosciences-related
Research InstitutionKyoto University

Principal Investigator

Yamasaki Shintaro  京都大学, 防災研究所, 准教授 (40584602)

Co-Investigator(Kenkyū-buntansha) 山下 聡  北見工業大学, 工学部, 教授 (00174673)
Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2021: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2019: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
Fiscal Year 2018: ¥8,450,000 (Direct Cost: ¥6,500,000、Indirect Cost: ¥1,950,000)
Keywords海底地すべり / 液状化 / 沿岸域 / 浅水域 / 音響調査 / 水中ドローン / 地質構造 / 湖 / 水底地すべり / 内陸湖 / 音響地層探査 / サイドスキャンソナー / 地すべり / 堆積構造 / ROV / 沿岸
Outline of Final Research Achievements

To elucidate landsliding mechanism in coastal and shallow area, I analyzed the preserved remnant of landslides in inland lake and shallow sea area by using up-to-date acoustic technology and small remotely operated vehicles. Lake Kussharo, Lake Inawashiro, the crater lake in Zao volcano, Yokoshima area in Nagasaki were investigated. In particular, I acquired precisive acoustic geological profiles, cutting across a large subaquatic landslide, and I found the structure indicating large area liquefaction at the bottom sediment. Then I found topographic and geological features relating to ground surface deformation at other sites in coastal and shallow area.

Academic Significance and Societal Importance of the Research Achievements

十分に解明されていない沿岸および浅水域で発生する地すべりの発生メカニズムを解明するため,地形が保存されている内陸湖や浅海域を対象にその地質・地形条件の分析を行った.特に本研究で得られた地すべりの発生地質条件を示す資料は,沿岸部や浅海域でどの場所が地震などによって崩壊しやすいかを評価するための基礎的なデータである.さらに,沿岸域の地すべりと火山活動や人間活動の関係についても成果が得られ,今後防災・自然災害の研究者が考慮すべき新しい視点を提示した.

Report

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

    (5 results)

All 2022 2021 2018

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (4 results) (of which Invited: 3 results)

  • [Journal Article] Geological and seafloor investigations of the cause of partial submergence of Yokoshima Island, Nagasaki, Japan2021

    • Author(s)
      Yamasaki Shintaro、Kamai Toshitaka、Watanabe Tatsuya
    • Journal Title

      Engineering Geology

      Volume: 287 Pages: 106108-106108

    • DOI

      10.1016/j.enggeo.2021.106108

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Presentation] 福島県・猪苗代湖湖底下の大規模地すべり構造と流体移動痕跡2022

    • Author(s)
      山崎新太郎
    • Organizer
      京都大学防災研究所研究発表会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 沿岸域・浅水域で発生する地すべりの発生場2021

    • Author(s)
      山崎 新太郎
    • Organizer
      日本地すべり学会関西支部シンポジウム
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] 地すべりの研究における「観る」技術の進歩2018

    • Author(s)
      山崎新太郎
    • Organizer
      平成30年度(公社)日本地すべり学会北海道支部および北海道地すべり学会総会・設立40周年記念講演・シンポジウム
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] 音響技術を用いた小水域・浅水域の地形・地質調査2018

    • Author(s)
      山崎新太郎
    • Organizer
      日本地質学会第125年学術大会(2018札幌)
    • Related Report
      2018 Annual Research Report
    • Invited

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

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