Figure 1

Geologic structure, faults, river systems, earthquake location, and station location in the study area and its adjacent regions. The inset figure shows the locations of the study area and its adjacent regions (red box) and the NCB, LYP represent North China Block, and Lower Yangtze Plate, respectively. (The software used to create the map is MAPGIS 6.7, http://www.mapgis.com.cn/).