Fault plane parameters of Tancheng M8? earthquake on the basis of present-day seismological data

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• 作者：Cuiying Zhou (1)
  Guiling Diao (2)
  Jie Geng (1)
  Yonghong Li (1)
  Ping Xu (1)
  Xinliang Hu (2)
  Xiangdong Feng (2)
  
• 关键词：Tancheng M8? earthquake ; present ; day moderate ; small earthquakes ; double ; difference earthquake location method ; focal mechanism ; fault plane parameters ; P315.3
• 刊名：Earthquake Science
• 出版年：2010
• 出版时间：December 2010
• 年：2010
• 卷：23
• 期：6
• 页码：567-576
• 全文大小：690KB
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• 作者单位：Cuiying Zhou (1)
  Guiling Diao (2)
  Jie Geng (1)
  Yonghong Li (1)
  Ping Xu (1)
  Xinliang Hu (2)
  Xiangdong Feng (2)
  
  1. Earthquake Administration of Shandong Province, Ji’nan, 250014, China
  2. Earthquake Administration of Hebei Province, Shijiazhuang, 050021, China
  
• ISSN：1867-8777

文摘

The great Tancheng earthquake of M8? occurred in 1668 was the largest seismic event ever recorded in history in eastern China. This study determines the fault geometry of this earthquake by inverting seismological data of present-day moderate-small earthquakes in the focal area. We relocated those earthquakes with the double-difference method and found focal mechanism solutions using gird test method. The inversion results are as follows: the strike is 21.6°, the dip angle is 89.5°, the slip angle is 170°, the fault length is about 160 km, the lower-boundary depth is about 32 km and the buried depth of upper boundary is about 4 km. This shows that the seismic fault is a NNE-trending upright right-lateral strike-slip fault and has cut through the crust. Moreover, the surface seismic fault, intensity distribution of the earthquake, earthquake-depth distribution and seismic-wave velocity profile in the focal area all verified our study result.