CAJ | 학술논문

电性柱结构模型通常用来代表某一地区范围内在纵向上的电性变化特征。利用大地电磁测深资料进行区域电性特征分析时，一般采用单独的TE模式、TM模式、TETM均值模式进行一维反演计算，难以取得较好的区域电性特征。等效视电阻率法是依据阻抗张量复数旋转不变而推导出来的，计算测点下方等效视电阻率的一种计算方法，计算结果不会因地表测量方位不同而发生变化。在地质条件非常复杂地区，利用该方法可以较好地获得该地区具有代表性的纵向电性结构特征。以东北阵列大地电磁“标准点”为例，依据实测资料设计一个复杂的三维模型，通过模型的正反演计算和模型对比实验研究，该方法在横向上、纵向上均具有较好的分辨率；将该方法应用到东北阵列大地电磁场“标准点”电性柱模型构建上，取得了较好的应用效果。
전성주결구모형통상용래대표모일지구범위내재종향상적전성변화특정。이용대지전자측심자료진행구역전성특정분석시，일반채용단독적TE모식、TM모식、TETM균치모식진행일유반연계산，난이취득교호적구역전성특정。등효시전조솔법시의거조항장량복수선전불변이추도출래적，계산측점하방등효시전조솔적일충계산방법，계산결과불회인지표측량방위불동이발생변화。재지질조건비상복잡지구，이용해방법가이교호지획득해지구구유대표성적종향전성결구특정。이동북진렬대지전자“표준점”위례，의거실측자료설계일개복잡적삼유모형，통과모형적정반연계산화모형대비실험연구，해방법재횡향상、종향상균구유교호적분변솔；장해방법응용도동북진렬대지전자장“표준점”전성주모형구건상，취득료교호적응용효과。
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.