插值切割位场分离方法改进及其在资料处理中的应用

The improvement of the interpolation cutting potential field separation method and its application to data processing

异常分离一直是重磁数据处理研究的重点。插值切割是一种空间域位场数据分离方法,其对重磁异常的不同非线性部分有不同的作用,从而提高了对不同特征异常的分辨率,该方法在去噪、异常分离、三维成像等方面均有应用。本文结合该方法在模型资料处理过程中遇到的问题,对插值切割算法进行了改进,并对改进前后的效果进行了比较。利用改进后的插值切割方法对中国西部某研究区的重磁数据进行处理,在深层重力构造异常提取和火成岩三维成像等方法均取得了较好的应用效果。

Anomaly separation has always been the focus of gravity and magnetic data processing. Interpolation cutting is a spatial potential field data separation method, which has different effects on different nonlinear parts of the gravity and magnetic anomalies, so as to improve the resolution of different feature anomalies. It can be applied to denoising, anomaly separation and 3 D imaging. In this paper, based on the problems encountered in the process of model and actual data processing, the interpolation algorithm is improved, and the effects before and after the improvement are compared. The improved interpolation cutting method was used to process the gravity and magnetic data of a certain exploration area in western China. Good results were obtained in the extraction of deep gravity anomalies and the three-dimensional imaging of igneous rocks.