物探与化探Issue(1)：118-124,7.DOI:10.11720/wtyht.2015.1.19
大地电磁测深反演技术有效性对比试验
Effectiveness of magnetotelluric sounding inversion technique
摘要
Abstract
A simple three⁃dimensional model, a low⁃resistivity abnormal body and a high resistance abnormal body located in one⁃di⁃mensional layered medium were designed in this paper. The authors used the"+" and"∗" type observation profiles as the analog form to carry out the comparative experimental study of the effectiveness of MT 1D, 2D, 3D inversion. The authors employed adaptive regu⁃larization ( ARIA) to perform 1D inversion, and adopted nonlinear conjugate gradient ( NLCG) to conduct 2D inversion and REBOCC to carry out 3D inversion. The comparison of the different inversion results below the profile with the original model shows that 1D and 2D inversion can be reflected in the results of real model information, while 3D inversion of REBOCC tends to build a three⁃dimension⁃al model of macroscopic electrical characteristics. In the 1D inversion results, as for the deep electrical structure, the inversion result shows that the TE polarization mode is better than TM polarization mode, and the combination mode of TE and TM has a medium result between the TE and TM. In the 2D inversion results, usually the TM polarization mode is better than TE polarization mode, and the in⁃version results of combination mode of TE with TM are almost equal with the TM polarization mode inversion results, or even better. In the 3D REBOCC inversion results, due to the influence of multiple solutions on inversion results, the 3D inversion of REBOCC tends to build a three⁃dimensional model of macroscopic electrical characteristics.关键词
大地电磁法/一维反演/二维反演/三维反演/层状介质/数值模拟Key words
magnetotelluric survey/1D inversion/2D inversion/3D inversion/layered media/Numerical simulation分类
天文与地球科学引用本文复制引用
仇根根,张小博,裴发根,袁永真,白大为,张鹏辉..大地电磁测深反演技术有效性对比试验[J].物探与化探,2015,(1):118-124,7.基金项目
国家“深部探测技术与实验研究”专项（SinoProbe－01－04）；国家科技攻关重点项目（12120114005001）；国土资源部公益性行业科研专项 （）
