Abstract: Time series and characteristics of crustal deformation and coseismic displacement of the 2013 Minxian-Zhangxian M_S6.6 Earthquake in Gansu province and its adjacent areas were obtained by high precision processing of CMONOC GPS data. The result indicates that only the GSMX of CMONOC fiducial stations in this area observed obvious coseismic displacement (about 18.7 mm), which means that the affected area of this earthquake is about 30～50 km from the epicenter, and the crustal movement in this area is active, regular and consistent. The velocity in the west is faster than in the east , the minimum (about 4.4 mm/a) is in the southeast and the maximum (about 18.4 mm/a) is in the southwest . The tectonic deformation in this area is mostly in compressed regime.

Key words: GPS time series, Crustal movement, Coseismic displacement, CMONOC