重磁对应分析方法在东北地区实际资料处理中的应用

本文从泊松定理出发,设计三度体理论模型,运用重磁对应分析方法,研究理论模型的重磁异常相关系数R、斜率B和截距A。由其等值线图得出点、线距的疏密不影响分析窗口半径的选择,确定了分析窗口半径的选择范围在模型半径的1.5倍左右以及截距的变化是剩磁反映的结论。进而从东北地区实际资料的重磁对应分析方法处理中推断出:该区强磁性岩石的剩磁较强,且由重磁异常的斜率B和截距A确定了强磁与剩磁的分布范围。

The application of correspondence analysis method of gravity and magnetic anomalies in the process of factual data, in northeast China

According to the Poisson`s theorem,the theories model of three degrees body was designed,and the related coefficient R,inclined rate B and intercepts A of model`s gravity and magnetic anomalies by using correspondence analysis method were studied.The authors found that the density of spacing of dots and lines doesn't almost influence the choice of analyzing window's radiuses,and the space of choosing windows is about 1.5 times of model radius,the change of intercepts reflected mostly residual magnetism.Then,in the processing of the method of correspondence analysis of gravitational and magnetic anomalies to actual data in northeast China,concluded that the strong magnetic rock has stronger residual magnetism,and determined the distributive scope of strong magnetism and residual magnetism from the inclined rate B and intercepts A of model's gravity and magnetic anomalies in the study area.