Abstract:We obtain the high-spatial resolution crustal deformation velocity based on the interferometric synthetic aperture radar (InSAR). The interseismic creep velocity distribution and locking depth are inversed based on the InSAR deformation, using the deep and shallow seismic dislocation model. The results show that, firstly, Gyaring Co fault is a right-lateral strike-slip, with differential motion on both sides of the fault. From west to east, the differential motion on the fault gradually weakens. Secondly, InSAR deformation features are highly consistent with GPS observations, and the largest difference in far-field deformation is 4 mm/a(LOS). Thirdly, the analysis of the fault profile in the study area shows that the difference in crustal deformation on both sides of the Gyaring Co fault is the largest, which is the main fault that controls the long-wavelength signal in the area. Fourthly, the slip rate of the Gyaring Co fault is 2~6 mm/a, withthe locking area located at the range between Tangra Yum Co and Zigui Co.There is a risk of future earthquakes in this area.
CHEN Weiran,ZHU Liangyu,SUN He et al. The Monitoring and Analysis of Current Crustal Movement of Gyaring Co Fault Based on InSAR[J]. jgg, 2021, 41(5): 478-483.