Fig. 1

Distributions of strong motion stations during the mainshock (M_w 6.6) and the EGF event (M_w 4.3). The large rectangle denotes the projection of the kinematic source model (Li et al. 2017), of which the thick line part denotes the top edge of the fault. The focal mechanisms are shown with beach balls. The star denotes the epicenter of the mainshock. Triangles and solid red circles represent the strong motion stations during the mainshock and the EGF event, respectively. Gray lines show fault traces (Deng et al. 2003) in the study area