基于体积分方程法的起伏地形三维电场正演

Three-dimensional Electric Field Forward Modeling Based on Volume Integral Equation Method of Undulating Topography

利用体积分方程实现了起伏地形三维电场的正演模拟。首先推导了起伏地形条件下的积分方程,在求解电并矢格林函数积分这一关键问题时,将其分解为一次电流项、一次电荷项和二次项;随后进行了模型试算,结果表明电场在地形和地下不均匀体处均有异常出现。

3-D electric field forward modeling of undulating topography can be achieved by volume integral equation method.First,under the condition of undulating topography,this paper deduced integral equation,while calculating tensor Green＇s functions,the algorithm divided it into first current part,first charge part,and second part;by model calculation,proved that electric field appear abnormal on uneven body and undulating topography.