CSAMT一维全区反演  

Full-Region Inversion of 1-D CASMT

作　　者：尚通晓[1] 李桐林[1] 关艺晓[1] 李建平[1] 林品荣[2] 

机构地区：[1]吉林大学地球探测科学与技术学院,长春130026 [2]中国地质科学院地球物理地球化学勘查研究所,河北廊坊065000

出　　处：《吉林大学学报（地球科学版）》2007年第S1期24-26,31,共4页Journal of Jilin University：Earth Science Edition

基　　金：国家"863"计划项目(1212010660301)

摘　　要：由汉克尔变换和连分式求解水平层状大地电偶源的水平电场和垂直磁场,然后由电场和磁场求得卡尼亚视电阻率,不进行近区和中间区校正,直接用阻尼最小法对近区和中间区发生畸变的卡尼亚视电阻率反演,得到地下电性参数。模型试算结果表明:虽然近区和中间区的视电阻率不能正确反映地下电性垂向变化,但由其反演仍能得到正确的结果。This article from Hankel transform and continued fractions to solve horizontal electric field and vertical magnetic field of dipole electrode source in horizontal-layered earths,and then by the electric and magnetic fields obtained Cagniard apparent resistivity,then We directly do Cagniard apparent resistivity Inversion using Damped least-squares method without carrying out near field and intermediate-field correction and obtain underground electric parameters.Model Calculation results show that: Although t...

关 键 词：CSAMT 一维全区反演 阻尼最小二乘法 汉克尔变换 

分 类 号：P631.4[天文地球—地质矿产勘探]