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Journal: |
Earthquake Research In China 2009 No.4
clicks:819 |
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Title:
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Author:
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Tian Qinjian Diao Guiling3 Hao Ping Feng Xiangdong and Sun Qing |
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Adress: |
Tian Qinjian1, 2) , Diao Guiling3) , Hao Ping2) , Feng Xiangdong3) , and Sun Qing |
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Abstract:
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The M810 Wenchuan earthquake occurred on the Longmenshan fault zone. Based on field investigation of the surface rupture and focal mechanism study of the aftershocks, we discuss the geological relationship of the main, secondary and triggered ruptures. The main rupture is about 200km long and can be divided into the south part and the north part. The south part
consists of two parallel fault zones characterized by reverse faulting, with several parallel secondary ruptures on the hanging wall of the main fault, and the north part is a single main fault zone characterized by lateral strike-slip and reverse faulting. Compared to a 300km long aftershock distribution, the surface rupture only occupies 200km, and the remaining 100km on
the northeast of the main rupture was triggered by aftershocks. Study on the ruptures of this earthquake will be useful for studying the earthquake risk evolution on the Longmenshan fault system. |
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Comment: |
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