稳定点电流源场三维有限差分正演模拟

文章阐述了用有限差分模拟计算三维稳定点电场的原理，提出了可以节约内存，提高运算速度的剖分网格，差分格式和超松弛迭代数值解的计算方法。并采用解析法计算点电源在均匀大地条件下产生的正常电位场，用有限差分计算异常地电异常体引起的异常电位场，进而得到实际电位场，简化了三维地电场数值模拟的问题，并且有效地控制了模拟计算精度。

Three-Dimensional Finite Differential Front Demonstrates Simulation of Stable Point Electrical Source Field

This paper expatiate upon applying the principle of using finite difference method in siumlating three dimensional stable point electrical source field, and brings forward grid dissection, differential format and super relaxation iterative evaluation method which can save EMS memory, and improve operation speed. In the paper the analytical method is introduced to compute the natural electrical field of spot electricity source formed under the condition of homosphere. And via the finite difference method, the abnormity potentio field which is aroused by the geoelectric abnormity body is computed and the practicality simulating potentio field is achieved, which simplifies the question to simulate three dimensional geoelectric field and the computing precision can be controlled effectively.