1. Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences , Beijing 100029 , China
2. University of Chinese Academy of Sciences , Beijing 100049 , China
3. Heilongjiang Mohe Observatory of Geophysics, Institute of Geology and Geophysics, Chinese Academy of Science , Beijing 100029 , China
4. State Key Laboratory of Geodesy and Earth's Dynamics, Innovation Academy for Precision Measurement Science and Technology , CAS, Wuhan430071 , China