Inversion comparison study in the cases of different array configuration and inversion method

摘要

By inversion comparison study in the cases of different arrays (WN, SH, PP, DD, PD, GN) and inversion methods, 3-D effects on 2-D resistivity imaging were showed via numerical simulation of synthetic models and subsequent inversion of synthetic datasets and field datasets. Inversion was executed using 2-D and 3-D inversion software. 3-D finite difference forward modeling was carried out,and datasets were extracted as 2-D pseudosection along parallel profiles in one direction of the models.These datasets were inverted individually using a 2-D inversion algorithm and combined using a 3-D algorithm. In both cases inversions were carried out with L1-norm (robust) inversion as well as L2-norm (least-square) inversion.