高密度电阻率法地形影响校正

TERRAIN CORRECTION IN HIGH-DENSITY RESISTIVITY METHOD

采用有限元法实现高密度电阻率法二维模型的正演模拟,将一定地形条件下的二维地电模型的视电阻率响应,分解为畸变场和正常场二部分进行分析。采用比值法消除由地形引起的畸变场,从而获得水平地形条件下二维地电结构的视电阻率值。在实际资料的校正中,取得了较好的应用效果。

With Finite Element Method to simulate the 2D High-Density Resistivity forward model, we divided the apparent resistivity response of 2D High-Density Resistivity model into two parts: normal part and abnormal part, and by using Ratio-Method we removed the abnormal effects of the topography, and got the resistivity value of 2D electric structure without topographic effects. A good result was obtained in a real data processing.