瞬变电磁快速成像解释系统研究  

A study of the interpretation system for TEM tomography

作　　者：郭文波[1] 李貅[1] 薛国强[2] 宋建平[1] 顾林生 

机构地区：[1]西安交通大学电信学院,西安710049 [2]中国科学院地质与地球物理研究所,北京100029 [3]西北有色地勘局物化探总队,西安710068

出　　处：《地球物理学报》2005年第6期1400-1405,共6页Chinese Journal of Geophysics

基　　金：中国科学院知识创新工程重要方向资助项目(CKZCX3_SW_134);973项目(2002CB412702)资助

摘　　要：为了提高瞬变电磁测深法对地探测的垂向分辨能力,文中研究了磁偶源瞬变电磁法快速成像的方法.详细讨论了电磁波与地震波在介质中的传播规律,分析了磁偶源瞬变电磁场在远区的响应特性.根据磁偶源瞬变电磁场与反射地震波的传播规律的相似性,提出了TEM资料拟地震快速成像解释的思路.理论模型正、反演计算结果表明方法理论是可行的,野外实测资料处理结果进一步说明了该方法是有效的.In order to improve the vertical resolution of the transient electromagnetic method （TEM）, we make a study of the interpretation system of TEM tomography. The law of propagation of electromagnetic wave and seismic wave in media and the response of TEM far-field are analyzed. According to the similarity between the propagation of magnetic dipole source TEM field and reflected-seismic wave, it is proposed to explain TEM data with the pseudo-seismic interpretation. The forward and inversion calculation results of theoretical model examples indicate that the theory is right. The processing results of field data demonstrate that this method is useful and practical.

关 键 词：瞬变电磁测深 磁偶源 拟地震解释 

分 类 号：P631[天文地球—地质矿产勘探]