地质学报Issue(4)：755-762,8.
起伏地形下复电阻率法2.5维反演研究
Research on 2 .5D SIP Inversion with Topography
摘要
Abstract
Complex resistivity method is based on the characteristics of spectral parameters of rocks and ores, and the multiple spectral parameters provide more information for evaluating anomalous bodies.However, the inverse problem of SIP has not been resolved well,so that it has restricted the application and development of SIP.Therefore,we derive the formula for the 2.5D SIP responses,which starting from maxwell’s equations combined with the Cole-Cole model,then we complete the forward modeling with finite element method.The forward method can simulate SIP response contains the electromagnetic effects with topography.On this basis,we propose a combined inversion method by using multi-arrangement of apparent resistivity and apparent phase of SIP date,and the smooth model constraint of Occam method is used to improve the stability of inversion.The algorithm can perform large-scale inversion,to deal with largely underdetermined inversion problem.The numerical test show that this method can be used to inverse all SIP parameters of geological model with synthetic data (noiseless data or noise data),which indicates the inversion algorithm is feasible.关键词
起伏地形/有限元法/复电阻率/2.5维反演/OCCAM反演Key words
topography/finite element method/complex resistivity/2 .5D Inversion/OCCAM inversion引用本文复制引用
范翠松,李桐林,王大勇,赵广茂,李建平..起伏地形下复电阻率法2.5维反演研究[J].地质学报,2014,(4):755-762,8.基金项目
本文为国家“深部探测技术与实验研究专项（SinoProbe）”第3项目“深部矿产资源立体探测技术及实验研究”第05课题（SinoProbe-03-05）资助的成果。 （）
