Abstract：We use Sentinel-1 data of three tracks to obtain the three-dimensional surface deformation rate field in the Zhangjiakou-Xuanhua basin and its surrounding area by using the PS-InSAR and the least-squares iterative approximation method combining prior conditions. We calculate the slip rate and locking depth of the Zhangjiakou fault and the southern margin fault of Xuanhua basin by profile projection and the mathematical expression for interseismic deformation of dip-slip faults of edge dislocation. The results of fault parameters show that the middle section of Zhangjiakou fault and the southern margin fault of Xuanhua basin have a high locking degree and background condition for strain energy accumulation to occur moderate to strong earthquake.
GAO Chen,MA Dong,CAO Jun et al. Characteristics of Present-Day Crustal Deformation and Inversion of Fault Slip Rate in the Zhangjiakou-Xuanhua Basin[J]. jgg, 2023, 43(11): 1143-1149.
