由激电异常进行异常体快速定位的方法  

Method of Quickly Locating Polarizable Body from TDIP Data

作　　者：韩江涛[1] 刘国兴[1] 刘伟[1] 

机构地区：[1]吉林大学地球探测科学与技术学院,长春130026

出　　处：《吉林大学学报（地球科学版）》2008年第2期324-329,335,共7页Journal of Jilin University：Earth Science Edition

基　　金：国家"863"项目(2006AA06Z109)

摘　　要：通过对时间域激发极化法视极化率异常进行水平导数分析,由形状因子和深度的函数绘制不同的窗口曲线,然后利用不同窗口曲线的交叉点获得极化异常体的形状和深度信息,从而实现了同时确定极化体形状和埋深的一种简便快速的定位方法——窗口曲线法。利用这种方法,能够实现对均匀场中极化体形状和深度信息的快速定位。为了检验本方法,对无随机噪声和有随机噪声的理论数据、实验室物理模拟数据和矿山实例分别进行了验证,解释结果与理论值相对误差基本小于10%。Window curve method, a simple domain induced polarization （TDIP） method is method to quickly locate a polarizable body from time- addressed. In the method, the shape and depth of a polarizable body can be calculated from the horizontal derivatives of TDIP abnormal. And window curves can be generated from the functions of different shape factor and depth. From the cross point of different window curves, a final shape factor and depth information of a polarizable body can be estimated. The method has been applied to theoretical data with or without noise, as well as experiment and field data. The results shows that the derived shape and top buried depth of abnormal body agrees well with the known information. The relative error between the interpretation results and the theoretical values is basically less than 10%.

关 键 词：均匀场 激发极化法 二次水平导数 快速定位 窗口曲线法 

分 类 号：P631.324[天文地球—地质矿产勘探]