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2008 Fiscal Year Final Research Report

Generation mechanism of slow slip-Effects of pore pressure

Research Project

  • PDF
Project/Area Number 19540439
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Solid earth and planetary physics
Research InstitutionThe University of Tokyo

Principal Investigator

YAMASHITA Teruo  The University of Tokyo, 地震研究所, 教授 (10114696)

Research Collaborator SUZUKI Takehito  東京大学, 地震研究所, 特任研究員 (10451874)
Project Period (FY) 2007 – 2008
Keywords地震現象
Research Abstract

多孔質媒質を仮定し、さらに流体の移動を考慮に入れてスロースリップの発生機構を理論的・数値的に調べた。これによると、透水係数が異なる媒質境界に断層が存在する場合に、もっとも大規模な余効すべりが起こりうることがわかった。また、低周波地震などのいわゆるゆっくり地震は、摩擦発熱による流体圧の上昇と空隙生成に伴う流体圧の減少の間の相互作用および流体拡散により説明可能であることがわかった。

  • Research Products

    (8 results)

All 2009 2008 2007

All Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (6 results)

  • [Journal Article] Dynamic modeling of slow earthquakes based on thermoporoelastic effects and inelastic generation of pores2009

    • Author(s)
      Suzuki, T. and T.Yamashita
    • Journal Title

      J. Geophys. Res (in press)

    • Peer Reviewed
  • [Journal Article] Quasi-static fault slip on an interface between poroelastic media with different hydraulic diffusivity : a generation mechanism of afterslip2008

    • Author(s)
      Yamashita, T. and T.Suzuki
    • Journal Title

      J. Geophys. Res B03405

      Pages: 114

    • URL

      doi : 10.1029/2008JB005930

    • Peer Reviewed
  • [Presentation] Fault bending promotes postseismic fault growth2008

    • Author(s)
      Yamashita, T.
    • Organizer
      American Geophysical Union 2008 Fall Meeting
    • Place of Presentation
      San Francisco
    • Year and Date
      2008-12-18
  • [Presentation] Slow Earthquakes Induced by Fluid Flow and Inelastic Pore Creation2008

    • Author(s)
      Suzuki, T.
    • Organizer
      American Geophysical Union 2008 Fall Meeting
    • Place of Presentation
      San Francisco
    • Year and Date
      2008-12-18
  • [Presentation] Dynamic modeling of low-frequency earthquakes with fluid flow2008

    • Author(s)
      Suzuki, T.
    • Organizer
      ASC-SSJ Fall meeting
    • Place of Presentation
      Tsukuba
    • Year and Date
      2008-11-26
  • [Presentation] 異種多孔性媒質境界での地震破壊-非地震性滑りのモデル化2008

    • Author(s)
      山下輝夫
    • Organizer
      日本地球惑星科学連合2008年大会
    • Place of Presentation
      千葉市
    • Year and Date
      2008-05-30
  • [Presentation] Quasistatic fault slip on an interface separating poroelastic media with different diffusivity2007

    • Author(s)
      Yamashita, T.
    • Organizer
      American Geophysical Union 2007 Fall Meeting
    • Place of Presentation
      San Francisco
    • Year and Date
      2007-12-10
  • [Presentation] 異種多孔性媒質境界での準静的地震破壊-拡散率の違いの効果2007

    • Author(s)
      山下輝夫
    • Organizer
      日本地震学会2007年秋季大会
    • Place of Presentation
      仙台市
    • Year and Date
      2007-10-25

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Published: 2010-06-10   Modified: 2016-04-21  

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