1. State Key Laboratory of Geodesy and Earth’s Dynamics, Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Xudong Road 340#, Wuhan 430077, Hubei Province, China
2. Also at State Key Laboratory of Geological Processes and Mineral Resources, Institute of Geophysics and Geomatics, China University of Geosciences, Lumi Road 388#, Wuhan 430074, Hubei Province, China; and College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Yuquan Road 19#, Shijingshan District, Beijing 100049, China.
3. State Key Laboratory of Geological Processes and Mineral Resources, Institute of Geophysics and Geomatics, China University of Geosciences, Lumi Road 388#, Wuhan 430074, Hubei Province, China, zhengyong@cug.edu.cn
4. Southwest Jiaotong University Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Xipu Campus, 999 Xi‐An Road, Pidu District, Chengdu 611756, Sichuan Province, China