背景电阻率对大地电磁法二维REBOCC反演结果的影响研究  

Research on Effect of Background Resistivity on Magnetotelluric Inversion Results Using 2D REBOCC Algorithm

作　　者：李磊[1] 邓居智[1] 陈辉[1] 王浩臣[1] 

机构地区：[1]东华理工大学放射性地质与勘探技术国防重点学科实验室,江西南昌330000

出　　处：《工程地球物理学报》2013年第6期800-804,共5页Chinese Journal of Engineering Geophysics

摘　　要：REBOCC(Reduced Basis Occam’s Inversion)算法是Siripunvaraporn等人将OCCAM反演的研究由模型空间转换到数据空间,改进的一种有效、实用大地电磁法(MT)二维反演算法。本文介绍了REBOCC方法的基本原理,并用该方法在不同的反演模式和不同的背景电阻率值所得的反演结果分别进行对比分析,试算结果表明,二维REBOCC反演在TE和TM联合模式反演,反演效果比单个TE、TM模式好;反演背景值设置不同对反演效果影响不大。REBOCC（Reduced Basis Occam＇s Inversion） algorithm is an effective, practical magnetotelluric 2D inversion algorithm, which is improved by Siripunvaraporn et al who transformed OCCAM inverse problem from model space to data space. The basic theory of REBOCC algorithm has been simply described. According to the results of different mode inversion and different background resistivity , it is found that the result of TE and TM combine mode inversion is much better than TE mode inversion and TM mode inversion, and the choice of background resistivity has little impact on the result of 2D MT REBOCC inversion.

关 键 词：MT REBOCC TE模式 TM模式 背景电阻率 

分 类 号：P631.3[天文地球—地质矿产勘探]