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The seismicity and tectonic stress field characteristics of the Longmenshan fault zone before the Wenchuan M_S8.0 earthquake |
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| Authors: | Zhiwei Zhang Wanzheng Cheng Xiang Ruan Peng Wu Lanzhou Institute of Seismology China Earthquake Administration Lanzhou China Earthquake Administration of Sichuan Province Chengdu China |
| Institution: | Zhiwei Zhang 1,2,Wanzheng Cheng 2 Xiang Ruan 2 , Peng Wu 2 1 Lanzhou Institute of Seismology,China Earthquake Administration,Lanzhou 730000,China 2 Earthquake Administration of Sichuan Province,Chengdu 610041,China |
| Abstract: | The seismicity of Longmenshan fault zone and its vicinities before the 12 May 2008 Wenchuan MS8.0 earthquake is studied.Based on the digital seismic waveform data observed from regional seismic networks and mobile stations, the focal mechanism solutions are determined.Our analysis results show that the seismicities of Longmenshan fault zone before the 12 May 2008 Wenchuan earthquake were in stable state.No obvious phenomena of seismic activity intensifying appeared.According to focal mechanism solutions of ... |
| Keywords: | Wenchuan earthquake Longmenshan fault zone focal mechanism solution tectonic stress field |
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