Second Crust Monitoring and Application Center, CEA, Xi'an 710054 China;
Second Crust Monitoring and Application Center, CEA, Xi'an 710054 China;
Second Crust Monitoring and Application Center, CEA, Xi'an 710054 China;
Second Crust Monitoring and Application Center, CEA, Xi'an 710054 China;
Gansu-Ningxia-Qinghai area; vertical deformation field; horizontal deformation evolution; fault activitiy anormaly; earthquake prediction;