水平多层介质上水平电偶源频率电磁测深的阻抗实部等效电阻率  

IMPEDANCE REAL PART EQUIVALENT RESISTIVITY IN FREQUENCY ELECTROMAGNETIC SOUNDING OF HORIZONTAL ELECTRIC DOUBLE SOURCE ON HORIZONTAL MULTILAYER MEDIA

作　　者：汤井田[1] 何继善[1] 

机构地区：[1]中南工业大学地质系

出　　处：《物探与化探》1994年第2期92-96,共5页Geophysical and Geochemical Exploration

摘　　要：本文讨论了水平电偶源频率电磁测深中阻抗实部等效电阻率的具体定义和算法。用该方法计算的等效电阻率是电磁响应的单值函数，并极大地改善了视电阻率随频率变化的关系曲线，能直观地反映出地电断面随深度的客观变化，数值较接近地层真电阻率，且接近速度很快，假极值效应明显压低。数值计算和实际应用表明该方法是灵活、可行的，可很好地消除频率电磁测深中波区视电阻率曲线在非波区的畸变效应。The present paper deals with the definition and algorithm of impedance real part equivalent resistivity in horizontal electric double source frequency electromagnetic sounding.The equivalent resistivity calculated with this method is the monodrome fundion of electromagnetic respome, which greatly improves the relational curve showing variation of apparent resistivity with frequency, and can intuitively reflect the objective variation of the geoelectric section with depth. The numerical value is relatively close to the real resistivity of strata,with the approximating spsed being very fast, and the effects of false extremes are obviously reduced. Numerical calculation and practical application prove the method to be flexible and feasible, and can satisfactorily eliminate the distortion effect of the wave-area apparent resistivity outside the wave area in frequency electromagnetic sounding.

关 键 词：水平电偶源 电磁测深 等效电阻率 

分 类 号：P631.325[天文地球—地质矿产勘探]