Fault Detection by 2D Resistivity Inversion on a Topographic Area



Direct current (DC) resistivity data acquired on rough terrain can be interpreted by using an appropriate two-dimensional (s-D) finite element inversion with the topography-incorporated technique developed by Tong and Yang (1990). This technique is computationally efficient and provides a geological interpretation that is an improvement on the standard 2-D inversion. The main feature of this scheme is that sounding data incorporated the topography into the inversion without any perevious topographic correction of field data. Thus errors inherited by the inversion data from an imperfect topographic correction can be avoided, especially in an area that has complex subsurface structures.

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