稳定的频率域变深度视密度反演方法

Stable inversion of apparent density in undulating layers in frequency domain

视密度反演的频率域方法具有速度快的特点,但由于其关键运算向下延拓算子的不稳定,造成该方法精度不能达到实际应用的要求.本文利用徐世浙开发的迭代向下延拓方法代替该算子,使其精度和稳定性都得到很大的提高.同时,本文还引入一个起伏因子,使频率域视密度反演方法的适用性得到很大的提高.并在新疆某地区的实际应用中取得了较好的效果.

The method of apparent density mapping in frequency domain is very quick. But as the core of the method based on an instabile downward continuation operator,the method is of inefficacy in application. In this paper,a more stabile downward continuation is used to improve the method. In addition,anundulating factor is introduced to improve the practicability of this method.