Fig. 1

Map showing the tectonic setting of the Jiuzhaigou area. Red stars indicated the epicenter of the Ms7.0 Jiuzhaigou earthquake. The Minjiang, Tazang and Huya active faults are indicated by red lines. Beach ball diagrams are from CENC. Black triangles denote the locations of ground-motion stations. The details of ground-motion stations are listed in Table 1. The inset shows the location of the current working area