Earthquake Administration of Hunan Province,Changsha,410012,China;
Earthquake Administration of Hunan Province,Changsha,410012,China;
Institute of Seismology,China Earthquake Administration,Wuhan,430071,China;
Institute of Seismology,China Earthquake Administration,Wuhan,430071,China;
Institute of Seismology,China Earthquake Administration,Wuhan,430071,China;
GPS time series; micro-behavior of strain field; annual strain field;