【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。更多还原

【Abstract】 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.更多还原