1 State Key Laboratory of Tibetan Plateau Earth System, Resources and Environment, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China. Electronic address: wangwm@itpcas.ac.cn.
2 State Key Laboratory of Tibetan Plateau Earth System, Resources and Environment, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China.
3 Institute of Earthquake Forecasting, China Earthquake Administration, Beijing 100036, China.
4 Institute of Geophysics, China Earthquake Administration, Beijing 100081, China.
5 Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China.