1. 1Institute of Seismology, China Earthquake Administration, Wuhan, China
2. 2Key Laboratory of Earthquake Geodesy, China Earthquake Administration, Wuhan, China
3. 3Sichuan Earthquake Agency, Chengdu, China
4. 4Center of Space Research, Institute of Geophysics and Geomatics, China University of Geosciences, Wuhan, China
5. 5China Earthquake Networks Center, Beijing, China
6. 6GNSS Research Center, Wuhan University, Wuhan, China