1. State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing 100029, China
2. Centre for the Observation and Modelling of Earthquakes, Volcanoes and Tectonics (COMET), Department of Earth Sciences, University of Oxford, Oxford OX1 3AN, UK
3. Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
4. School of Earth Sciences and Engineering, Sun Yat-Sen University, Guangzhou 510275, China