1. Key Laboratory of Earth and Planetary Physics Institute of Geology and Geophysics, Chinese Academy of Sciences Chaoyang District Beijing 100029 China
2. National University of Singapore Department of Civil and Environmental Engineering Singapore 117576 Singapore
3. Institutions of Earth Science Chinese Academy of Sciences Chaoyang District Beijing 100029 China
4. School of Resources and Environment, University of Electronic Science and Technology of China Qingshuihe Campus Chengdu 611731 China