利用水平截面法对任意形状三度体的重力异常的快速正演

自然界中的地质体,不可能是规则的几何形体,用规则形体的理论方法去逼近,往往造成很大的误差。本文的方法则是对一三度体,用水平截面法对其切割,并用一多边形去逼近,从而得到一精确的数学解析表达式,来确定一三度体的重力异常。本文的方法不仅精度高,而且速度快,是目前一种比较好的正演方法。

RAPID DIRECT METHOD OF GRAVITY ANOMALY OF ARBITRARY THREE-DIMENSIONAL BODY BY HORIZONTAL SECTION

To use theoretic method of regular shape often causes serious error because there is noany regular geological body in the nature.A three-dimensional body is cut away by horizontal sectionand close to a polygon so as to get a precise mathematic analytic formula to define gravity anomaly ofthree dimensional body.The method described in this article is not only high precision but also highspeed and a better direct method at present.