大地电磁测深资料解释的新方法  

A NEW APPROACH FOR INTERPRATATION OF MAGNETOTELLURIC DATA

作　　者：朱仁学[1] 周云轩[1,2] 孟令顺 刘万崧 李成立 

机构地区：[1]长春科技大学地球探测与信息技术学院 [2]中国科学院长春地理研究所,吉林长春130021 [3]大庆石油勘探开发研究院

出　　处：《长春科技大学学报》2000年第3期271-274,共4页Journal of Changchun University of Science and Technology

基　　金：国家自然科学基金委员会资助;大庆石油管理局资助项目!(49894190 - 31)

摘　　要：大地电磁测深 (MT)资料解释中 ,长期以来使用观测的视电阻率作为解释参数。但视电阻率存在一定的局限性。相位微分为MT的解释增加了一种新的手段。从理论上研究了相位微分的性质 ,并将其应用于松辽盆地北部MT资料解释中 ,得出了A剖面的电性特征 ,确定了主要电性层的深度和电阻率。In magnetotelluric(MT) data analysis, the observed apparent resistivity have been used as an interpretative parameter for a long time. However, apparent resistivity has limitations. There is new approach for interpratation of magnetotelluric data by using the method of phase-derivative. In this paper the specific property of phase-derivative was studied and used in the interpretation of MT data from northern Songliao basin. Electric features of profile A were thus obtained. The depth and resistivity of primary electric layers were delimited.

关 键 词：电阻率 阻抗相位 解释参数 大地电磁测探 

分 类 号：P631.325[天文地球—地质矿产勘探]