Abstract：In this study, a pair of SAR imagestaken before and after the Pishan earthquake acquired from the Sentinel-1A satellite are used to extract the coseismic deformation field. Based on the above coseismic deformation field and the Okada model, considering the varying incidence angle and unwrapping datum error, we inverse the fault slip distribution of this earthquake. The inversion results indicate that the Pishan earthquake is a thrust earthquake with smaller dip, the fault ruptures 5 km under the surface, and the maximum slip is about 0.76 m, and the main slip area is at the depth of 9-14 km. The estimated seismic moment is 5.14×1018, approximately equivalent to the magnitude of MW6.47.
HAN Yingying,ZENG Haowei,WU Kangliang et al. Fault Slip Distribution of 2015 MW6.5 Pishan, Xijiang Earthquake Inversed from Sentinel-1A Data[J]. jgg, 2017, 37(6): 590-593.
