Investigation on physico-chemical processes of earthquake faults

地震断层物理化学过程研究

• 批准号: 20740264
• 负责人: HIROSE Takehiro
• 金额: $ 2.58万
• 依托单位: Japan Agency for Marine-Earth Science and Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2009
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20740264/
• 关键词: 地震; 断層; 高速摩擦; 間隙水; 摩擦発熱

含水条件下で地震性高速断層運動を再現できる試験機を開発することに成功した.その結果,(1)断層摩擦発熱に起因する間隙水圧の上昇に伴って断層の強度が低下すること(有効圧の法則が断層運動時にも適応可能であること),(2)マグニチュード1以下の地震においても,様々なガスの放出と間隙流体の化学組成の著しい変化が起こることが確認された.また,これら断層起源ガスや流体組成の変化が地下生命圏に影響を与える可能性を指摘することができた.

The reconstruction of seismic high-speed fault motion under water-bearing condition is successful. The results are as follows: (1) the rise of interstitial water pressure due to fault friction heat generation is accompanied by the decrease of fault strength (there is a law of pressure and fault movement is suitable for the possible change),(2) the occurrence of chemical composition of interstitial fluid due to earthquake below 1 is confirmed. The origin of the fault, the change of fluid composition and the influence of subsurface life cycle are discussed.

项目成果

Fluid lubrication of faults during earthquakes: Evidence from high velocity experiments on fluid-saturated gouge

地震期间断层的流体润滑：来自流体饱和凿岩高速实验的证据

• 发表时间: 2009
• 作者: 廣瀬丈洋;ほか
• 通讯作者: ほか

Influence of fault slip rate on shear-induced permeability

• DOI: 10.1029/2009jb007013
• 发表时间: 2010-07
• 期刊: Journal of Geophysical Research
• 作者: W. Tanikawa;M. Sakaguchi;O. Tadai;T. Hirose

(2009) Grain size distribution and microstructures of experimentally sheared granitoid gouge at coseismic slip rates - criteria to distinguish seismic and aseismic faults?

(2009) 同震滑动速率下实验剪切花岗岩泥的粒度分布和微观结构 - 区分地震和地震断层的标准？

• 发表时间: 2009
• 期刊: Journal of Structural Geology
• 影响因子: 3.1
• 作者: Stunitz;H.;Keulenb;N.;Hirose;T.;Heilbronnerb;R.
• 通讯作者: R.

Energy Partitioning during Frictional Sliding at Coseismic Slip Rates

同震滑移率摩擦滑动过程中的能量分配

• 发表时间: 2008
• 作者: Hirose;T.;et;al.
• 通讯作者: al.

(2010) Influence of fault slip rate on shear-induced permeability

(2010) 断层滑动速率对剪切诱发渗透率的影响

• 发表时间: 2010
• 期刊: Journal of Geophysical Research 115(印刷中)
• 作者: Tanikawa;W.;Sakaguchi;M.;Tadai;O.;Hirose;T.
• 通讯作者: T.