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《中国地震研究(英文版)》 2018-04
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Relocation of the Jinghe M_S6.6 Earthquake Sequence on August 9,2017 and Analysis of the Seismogenic Structure

Liu Jianming;Gao Rong;Wang Qiong;Nie Xiaohong;Earthquake Agency of Xinjiang Uygur Autonomous Region;  
Based on the digital waveforms of the Xinjiang Digital Seismic Network,the Jinghe M_S6.6 earthquake sequence( M_L≥1. 0) were relocated by HypoDD,The characteristics of the spatial distribution and the seismogenic structure of this earthquake sequence were analyzed. The results show that the main shock is relocated at 44. 2639° N,82. 8294° E,and the initial rupture depth is 17. 6 km. The earthquake sequence clearly demonstrates a unilateral extension of about 20 km in the EW direction,and is mainly located at a depth of 7km-17 km. The depth profile along the aftershock direction shows that the focal depth of aftershocks tend to be shallower within 10 km to the west of the main shock,the focal depth of the aftershock sequence with the tail direction deflecting SW is deeper. The depth profile perpendicular to the earthquake sequence shows a gradual deepening of the seismic sequence from north to south,which indicates that the fault plane is dipping south.According to the focal mechanism solution,given by the Institute of Geophysics,China Earthquake Administration,and the geological structure of the seismic source region,it is inferred that the seismogenic structure of the Jinghe M_S 6.6 earthquake may be the eastern segment of the Kusongmuxieke fault.
【Fund】: jointly funded by the Scientific Research Project of Jinghe MS6.6 Earthquake-Anatomy of Jinghe M S6.6 Earthquake and Strong Earthquake Trend Following and Prediction in Northern Tianshan Mountains Institute of Earthquake Forecasting CEA(1747074512);; the National Natural Science Foundation of China(41672208);; Science for Earthquake Resilience(XH17043Y);; Science Fund for Earthquake Agency of Xin Jiang Uygur Autonomous Region(201705)
【CateGory Index】: P315
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