电测深资料二维反演

2D inversion for electric sounding data

青岛海洋大学地质系, 青岛266003

Dept. of Geology, Ocean University of Qingdao, Qingdao City, Intercode: 266003

目前二维电测深反演普遍采用最优化迭代方法, 这种方法应用的关键所在便是Jacobian矩阵的求取, 本文成功地将有限元的电阻率编导数求法与厚度编导数的差分数值求法结合起来, 使Jacobian矩阵容易得到, 从而在微机上实现二线电测深反演。

The 2D inversion technique that is most commonly used for electric sounding is an optimally iteractive one. The calculation of the Jacobian matrix is vital in applying the method. This paper has successfully combined finite element solutions for local derivatives of resistivities and difference numerical solutions for local derivatives of thickness to facilitate the calculation of the Jacobbo matrix. So,the 2D electric sounding inversion can be implemented on a microcomputer.