Characteristics of InSAR Coseismic Deformation and Slip Distribution of the Akto MS6. 7 Earthquake,Xinjiang

作者：QIU Jiangtao,ZHAO Qiang,LIN Peng

摘要：The Akto MS6. 7 earthquake occurred near the western end of the Muji fault basin in the top of the Pamir syntaxis. The main shock of this earthquake is complicated and the focal mechanism solutions based on the seismic wave inversions are different. Based on the Sentinel-1 SAR data,the coseismal deformation field of the earthquake is obtained by In SAR technique. Based on the elastic half-space dislocation model,the geometrical parameters and the slip distribution model are determined by nonlinear and linear inversion algorithms. The results show that the distributed slip model can well explain the coseismic deformation field. The earthquake includes at least two rupture events,which are located at 7 km(74. 11°E,39. 25°N)and 33 km(74. 49°E,39. 16°N)east from the epicenter according to the CENC. The deformation field caused by the earthquake shows a symmetry distribution,with the maximum LOS deformation of 20 cm. The main seismic slip is concentrated in the 0-20 km depth,and the maximum slip is 0. 84 m. The seismic fault is the Muji fault,and this earthquake indicates that the northeastward push of the Indian plate is enhanced.

发文机构：The Second Monitoring and Application Center

关键词：TheAktoEARTHQUAKEINSARCOSEISMICSLIPdistributionMUJIfaultFOCALmechanism

分类号： P31[天文地球—固体地球物理学][天文地球—地球物理学]