摘要
在传统的CSAMT电磁场一维正演中加入柯尔-柯尔模型,模拟可极化地电断面的CSAMT电磁场响应.通过对均匀半空间、H型地电断面的理论计算,分析了柯尔-柯尔模型参数对CSAMT的Ex、Hy影响特征.基于电场相对磁场对激电效应的反映更加灵敏,提出分别利用Hy与Ex分量反演电阻率、厚度以及激电参数的方法.反演计算表明,该方法克服了电阻率、厚度、激电参数一同反演时受初始模型影响太大,容易陷入局部极小值的问题,可以在一定程度上提取出合适的激电参数.
In the traditional forward modeling of CSAMT electromagnetic, simulate the polarized ground CSAMT electromagnetic response by adding Cole-Cole model. Based on the theoretical calculation of homogeneous half space and H Model geoelectric section, we analysis the effect characteristics of Ex, Hy of CSAMT, which are impact by Cole - Cole model parameters. Based on the electric field relative to the magnetic field of the IP effect reflects more sensitive, we have proposed a method which using Hy and Ex components to inverse the resistivity, thickness and induced polarization parameters. The inversion calculations show this method overcomes the big influence by the initial model and the problem of the calculation is easy to fall into local minimum when the inversion using the resistivity, thickness, induced polarization parameters. Certain extent, we can extract the appropriate IP parameters.
出处
《地球物理学进展》
CSCD
北大核心
2013年第4期2116-2122,共7页
Progress in Geophysics
基金
国土资源部深部探测项目(SinoProbe-03-03)
国家自然科学基金项目(41104075)联合资助
