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High-velocity frictional behavior of Longmenshan fault gouge from Hongkou outcrop and its implications for dynamic weakening of fault during the 2008 Wenchuan earthquake |
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| Authors: | Tetsuhiro Togo Toshihiko Shimamoto Shengli Ma Takehiro Hirose |
| Affiliation: | Tetsuhiro Togo~(1,) Toshihiko Shimamoto~2 Shengli Ma~2 and Takehiro Hirose~3 1 Department of Earth and Planetary Systems Science,Graduate School of Science,Hiroshima University,Higashi-Hiroshima,739-8526,Japan 2 State Key Laboratory of Earthquake Dynamics.Institute of Geology,China Earthquake Administration,Beijing 100029,China 3 Kochi Institute for Core Sample Research,Japan Agency for Marine-Earth Science and Technology(JAMSTEC),200 Monobe-otsu,Kochi 783-8502,Japan |
| Abstract: | High-velocity friction experiments were conducted on clayey fault gouge collected from Hongkou outcrop of Beichuan fault,located at the southwestern part of Longmenshan fault system that caused the disastrous 2008 Wenchuan earthquake.The ultimate purpose of this study is to reproduce this earthquake by modeling based on measured frictional properties.Dry gouge of about 1 mm in thickness was deformed dry at slip rates of 0.01 to 1.3 m/s and at normal stresses of 0.61 to 3.04 MPa,using a rotary-shear high-vel... |
| Keywords: | Wenchuan earthquake high-velocity friction fault mechanics Longmenshan fault system Beichuan fault |
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