1. Institute of Hazard and Risk Research and Department of Geography; Durham University; Durham; UK
2. Center for Earthquake Research and Information; University of Memphis; Memphis; Tennessee; USA
3. National Key Laboratory of Oil and Gas Reservoir Geology and Exploitation; Chengdu University of Technology; Chengdu; Sichuan; China
4. Seismological Bureau of Sichuan Province; Chengdu; Sichuan; China
5. Department of Geology; College of William and Mary; Williamsburg; Virginia; USA
6. Department of Earth Sciences; Swiss Federal Institute of Technology; Zurich; Switzerland