1. State Key Laboratory of Geological Processes and Mineral Resources, Center for Global Tectonics, School of Earth Sciences, China University of Geosciences , Wuhan 430074 , China
2. Badong National Observatory and Research Station for Geohazards, China University of Geosciences , Wuhan 430074 , China
3. Department of Earth, Environmental and Planetary Sciences, Brown University , Providence , RI 02912 , USA