物探与化探Issue(4)：732-736,5.DOI:10.11720/wtyht.2014.4.18
MT等效视电阻率法在构建电性柱结构模型中的应用
The application of the MT equivalent apparent resistivity method to the construction of electrical column structure
摘要
Abstract
The electrical column structure model is usually used to represent the longitudinal variation of electrical characteristics within a region. When we analyze the overall electrical characteristics by regional MT sounding data, it is difficult to get satisfactory regional e-lectric characteristics through one-dimensional inversion by using single TE, TM, and mean of TE with TM data conventionally. The e-quivalent apparent resistivity method is used to calculate equivalent apparent resistivity below the station based on the impedance tensor plural rotate invariantly. The calculation result is not dependent on the change of surface measuring azimuth. In areas with very complex geological conditions, the use of equivalent apparent resistivity method can obtain the longitudinal electrical structure of the region. Tak-ing northeast MT array "standard station" as an example, the authors designed a very complex three-dimensional model according to the measured data. Studies show that the equivalent apparent resistivity method has better resolution in the transverse direction and the longitudinal direction, as shown by model forward and inversion calculation and comparison experiments. The authors applied the meth-od to the construction of electrical column structure at the northeast MT array standard station and achieved a good application effect.关键词
大地电磁/旋转不变量/等效视电阻率/电性柱模型/一维反演Key words
MT/rotation invariant/equivalent apparent resistivity/electrical column model/one-dimensional inversion分类
天文与地球科学引用本文复制引用
仇根根,张小博,方慧,钟清,裴发根,袁永真,杜炳瑞..MT等效视电阻率法在构建电性柱结构模型中的应用[J].物探与化探,2014,(4):732-736,5.基金项目
国家深部探测专项 （）
