1. Institute of Seismology, China Seismological Bureau, Wuhan 430071, China.
2. Center for Crustal Movement Studies and Institute of Geology, China Seismological Bureau, Beijing 100029, China.
3. Geophysical Institute, University of Alaska, Fairbanks, AK 99775, USA.
4. Department of Geological Sciences and CIRES, University of Colorado, Boulder, CO 80309, USA.
5. Department of Aerospace Engineering Sciences, University of Colorado, Boulder, CO 80309, USA.
6. First Crustal Deformation Monitoring Center, China Seismological Bureau, Tianjin 300180, China.
7. School of Geodesy and Geomatics, Wuhan University, Wuhan, 430071, China.
8. Department of Surveying Engineering, Chang'an University, Xi'an 710064, China.