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2011 Fiscal Year Final Research Report

Exploring the diversity and scaling laws of landslides using small-scale laboratory experiments

Research Project

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Project/Area Number 21654068
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeSingle-year Grants
Research Field Geology
Research InstitutionKanazawa University

Principal Investigator

SUMITA Ikuro  金沢大学, 自然システム学系, 准教授 (90334747)

Project Period (FY) 2009 – 2011
Keywords地すべり / 地下水 / 浸透流 / 湿った砂 / 圧力 / 間隙水圧
Research Abstract

We have conducted laboratory experiments in which the ground water percolating into the wet sand triggers the landslides. We find that(1) landslides are triggered after the water percolates through the sand column,(2) as the groundwater level rises, the number of slides increases from 0 to 3, after which the whole sand column is pushed in the form of debris flow,(3) the time until the slide occurs agree well with the pressure diffusion time scale determined by the groundwater level. In addition we find that as the water percolates, the pressure at the bottom of the sand column decreases whereas that at the sides increases, prior to the landslide. This suggests that pressure measurements may be used to monitor the precursory stage of the landslides.

  • Research Products

    (13 results)

All 2012 2011 2010 2009 Other

All Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (10 results) Remarks (1 results)

  • [Journal Article] Experiments on upward migration of a liquid-rich layer in a granular medium : Implications for a crystalline magma chamber2012

    • Author(s)
      Shibano, Y., Namiki, A., Sumita, I.
    • Journal Title

      Geochem. Geophys. Geosys

      Pages: Q03007

    • DOI

      doi:10.1029/2011GC003994

    • Peer Reviewed
  • [Journal Article] Experiments on granular rheology : effects of particle size and fluid viscosity2009

    • Author(s)
      Higashi, N. and I. Sumita
    • Journal Title

      J. Geophys. Res.

      Volume: 114 Pages: B04413

    • DOI

      doi:10.1029/2008JB005999

    • Peer Reviewed
  • [Presentation] Experiments on a liquid-rich layer ascent in a granular medium : Implications for slab fluid, First International Symposium on Geofluids2011

    • Author(s)
      Namiki, A., Shibano, Y., Sumita, I.
    • Organizer
      Tokyo Institue of Technology
    • Place of Presentation
      東京都
    • Year and Date
      20110317-19
  • [Presentation] Experiments on Upward Migration of a Liquid-Rich Layer in a Granular Medium : Implications for Slab Fluid2011

    • Author(s)
      Namiki, A. Shibano, Y. Sumita, I.
    • Organizer
      AGU 2011 Fall Meeting
    • Place of Presentation
      San Francisco、Moscone Convention Center, USA
    • Year and Date
      2011-12-08
  • [Presentation] The effect of target rheology on impact cratering : case for a wet sand2011

    • Author(s)
      Takita, H., Sumita, I.
    • Organizer
      AGU 2011 Fall Meeting
    • Place of Presentation
      San Francisco、Moscone Convention Center, USA
    • Year and Date
      2011-12-07
  • [Presentation] 衝突クレーターリングにおけるターゲットレオロジーの影響:湿った砂の場合2011

    • Author(s)
      瀧田、隅田
    • Organizer
      2011地球惑星科学連合大会幕張メッセ国際会議場
    • Place of Presentation
      千葉県
    • Year and Date
      2011-05-25
  • [Presentation] 粉粒体の固着すべり実験:パラメータ依存性の精査2010

    • Author(s)
      隅田、東、坪田
    • Organizer
      地球惑星科学連合2010年大会
    • Place of Presentation
      幕張メッセ国際会議場,千葉県
    • Year and Date
      2010-05-26
  • [Presentation] 粉粒体を用いた固着滑り-安定滑り遷移の実験2010

    • Author(s)
      坪田、隅田
    • Organizer
      地球惑星科学連合2010年大会
    • Place of Presentation
      幕張メッセ国際会議場,千葉県
    • Year and Date
      2010-05-25
  • [Presentation] 部分溶融層におけるメルト上昇のモデル実験2010

    • Author(s)
      柴野、隅田
    • Organizer
      地球惑星科学連合2010年大会
    • Place of Presentation
      幕張メッセ国際会議場,千葉県
    • Year and Date
      2010-05-24
  • [Presentation] Laboratory experiments of Landslides using a wet granular matter2009

    • Author(s)
      Shibuya, F. Sumita, I.
    • Organizer
      2009 AGU Fall meeting
    • Place of Presentation
      San Francisco, Moscone Convention Center, USA
    • Year and Date
      2009-12-17
  • [Presentation] Experiments on granular rheology : effects of particle size and fluid viscosity2009

    • Author(s)
      Sumita, I., Higashi, N.
    • Organizer
      2009 AGU Fall meeting
    • Place of Presentation
      San Francisco, Moscone Convention Center, USA
    • Year and Date
      2009-12-17
  • [Presentation] 洪水に起因する崖崩れの実験的研究2009

    • Author(s)
      澁谷、隅田
    • Organizer
      日本流体力学会年会2009
    • Place of Presentation
      東洋大学白山キャンパス,東京都
    • Year and Date
      2009-09-03
  • [Remarks]

    • URL

      http://hakusan.s.kanazawa-u.ac.jp/~sumita/

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Published: 2013-07-31  

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