Abstract We use InSAR deformation data after the 2014 Kangding MS6.3 earthquake as constraints, and use the three-layer viscoelastic seismic period model and genetic algorithm to invert the viscoelastic layer thickness and viscosity coefficient of deep medium in the focal region of Kangding earthquake in the southeast section of Xianshuihe fault. The results show that: 1) The thickness of the viscoelastic layer in the lower crust of Kangding area is 5 km, and the viscosity coefficient is 9.9 × 1017 Pa·s. The rheological properties of lower crust and lower mantle media on both sides of the fault have significant lateral heterogeneity. 2) By inversion on both sides of the fault, the viscous coefficient of the lower crust of the southwest fault (8.7 × 1017 Pa·s) is slightly smaller than that of the northeast fault (1.2 × 1018 Pa·s).
LIU Yanhui,ZHU Liangyu,JI Lingyun et al. Regional Medium Characteristics Based on Post-Earthquake Deformation Analysis of Kangding MS6.3 Earthquake in 2014[J]. jgg, 2022, 42(6): 559-564.
LIU Yanhui,ZHU Liangyu,JI Lingyun et al. Regional Medium Characteristics Based on Post-Earthquake Deformation Analysis of Kangding MS6.3 Earthquake in 2014[J]. jgg, 2022, 42(6): 559-564.
