众所周知,封闭区域的拉普拉斯(Laplace)方程可用有限差分法求解,但是,在重磁测量中只能测得某一地形曲面上的重磁场值,难以构成一个封闭的曲面,于是就归结为这样一个数学问题: 式中Γ是区域G的边界中的某一段,f It is well-known that the Laplace equation in a closed area can be solved by the finite difference method. However, in a gravity and magnetic survey, only the gravity and magnetic field values ​​of a certain terrain surface can be measured and it is difficult to form a closed surface. For such a mathematical problem: where Γ is a segment of the boundary of region G, f