Abstract On 8 August 2017, a MS7.0 earthquake struck Jiuzhaigou county, Sichuan province, China. In this study, we use GPS, InSAR and strong motion data to invert the fault geometry and rupture model associated with the earthquake and analyze the cause of the earthquake. The results show that the Jiuzhaigou earthquake occurred on a blind strike-slip fault with strike 154° and dip 80°. The coseismic slip is dominated by left-lateral strike slip with a slight normal slip component and mainly locates at a depth of 2~12 km. The maximum slip is 1.6 m at a depth of 6 km. There is no slip on the subfault patches near the surface. The total seismic moment released in the Jiuzhaigou earthquake is 5.59×1018 Nm, corresponding to an MW6.44 event. We believe that the seismogenic fault is the hidden northern segment of the Huya fault.
HUANG Yong,CHEN Wei,LI Qi et al. Coseismic Slip Distribution of the 2017 MS7.0 Jiuzhaigou Earthquake from Joint Inversion of GPS, InSAR and Strong Motion Data[J]. jgg, 2020, 40(6): 565-570.
HUANG Yong,CHEN Wei,LI Qi et al. Coseismic Slip Distribution of the 2017 MS7.0 Jiuzhaigou Earthquake from Joint Inversion of GPS, InSAR and Strong Motion Data[J]. jgg, 2020, 40(6): 565-570.