AMT近源干扰压制方法  

Method of suppressing the adjacent source interference in AMT

作　　者：王刚[1] 王书民[1] 朱威[1] 张振宇[1] 姚大为[1] 李永博[1] 

机构地区：[1]中国地质科学院地球物理地球化学勘查研究所,河北廊坊065000

出　　处：《物探与化探》2015年第2期371-375,共5页Geophysical and Geochemical Exploration

基　　金：中国地质调查局科技项目(1212010811009)

摘　　要：音频大地电磁法(AMT)在野外采集的是包含了多种频率的时间序列数据,这些数据中常含有干扰信号。大量查看音频大地电磁法野外实测时间序列数据,发现测量数据受到严重的近源干扰,但干扰信号不是连续出现的。于是通过分析V5-2000大地电磁仪的原始数据格式,根据干扰信号的特征,提出一种自动筛选时间序列数据的方法。宁芜地区的实测资料处理结果表明,该方法能在一定程度上压制近源干扰。The time series data with multiple frequencies which are collected by using audio frequency magnetotelluric method（AMT）often contain interference signals. After a lot of measured time series data viewed,we have found that the data are seriously interfered by adjacent source,but the interference signal appearance is not continuous. According to the features of the interference signal and the analysis result of original data format of V5- 2000 magnetotelluric instrument,the author proposed a method for automatic selection of time series data. Real data processing results in Ningwu area show that this method can partly suppress the adjacent source interference.

关 键 词：音频大地电磁 V5-2000大地电磁仪 TBL文件 TSn文件 近源干扰 

分 类 号：P631[天文地球—地质矿产勘探]