Abstract:To explore the influence of geodetic data with different dimensions and precisions on the inversion of fault slip distribution, we take three typical faults as subjects to discuss and analyze. We also experiment with slip distribution inversion where the deep slip varies along depth direction of the three categories faults from the different accuracy InSAR and GPS geodetic deformation. Comparing the results of three categories of faults, we find that the conclusions are highly consistent. The results show that at the same depth, the residual error by InSAR and GPS geodetic deformation with high accuracy is small, and the residual error of InSAR geodetic deformation with normal accuracy is larger. As center depth increases, the detection capability of deep slip inversion decreases gradually. The detection capability of deep slip inversion based on deformation (InSAR or GPS) with high accuracy is higher than that based on InSAR deformation with normal accuracy. When the accuracy of InSAR and GPS deformation is the same, the dimensionality has a certain influence on the detectability of the deep slip of the fault.
ONG Qi,GAO Ertao,YU Hangming et al. Research on the Sensitivity of Deep Slip Inversion for Earthquake Fault Slip Constrained by InSAR and GPS Geodetic Deformation Data[J]. jgg, 2022, 42(1): 59-64.