有限元法在大地电磁场正演计算中的应用及改进

APPLICATION AND IMPROVEMENT OF FINITE-ELEMENT METHOD IN FORWARD CALCULATION OF GEO-ELECTROMAGNETIC FIELD

本文讨论了有限元法在大地电磁测深二维正演问题中的应用.研究了现有文献中的方法,提出了以矩形单元为主,结合采用三角形单元的方案,作为对现有方法的改进,并以潜伏倾斜界面为例,给出了具体的计算公式.

This paper deals with the application of finite element method to the two dimensional forward calculation of geo-eletromagnetic sounding. Having examined all the methods presented in the REFERENCES, a suggestion of "taking the rectangle (unit) as primary and the triangular (unit) as supplementary" has been made for improving the methods available. By taking the underground inclinatory boundary as an example, the formula for its calculation is given.