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正演计算是重磁资料解释推断中的基本问题之一。而任意形体重磁正演计算的多边形截面法又是其主要方法之一。这方法的特点是用一系列平行面将任意形体分割成若干截面,再用多边形去逼近每一截面的形态。由于多边形的边数是任意的,因此能够以任意地精度逼近任意形体,并且对每一截面的作用值能够用精确的解析表达式表示。这是该方法的优点。但
Forward calculation is one of the basic problems in inference of gravity and magnetic data interpretation. However, one of the main methods is polygonal cross-section method, which is calculated by arbitrary shape gravity and magnetic forward modeling. The characteristic of this method is that a series of parallel surfaces are used to divide arbitrary shape into several sections, and then polygons are used to approximate the shape of each section. Since the number of sides of a polygon is arbitrary, arbitrary shapes can be approximated with an arbitrary precision, and the action value for each cross section can be expressed with a precise analytic expression. This is an advantage of this method. but