摘要
研究可控源音频大地电磁(CSAMT)法的场源效应对电阻率异常的影响,有助于提高识别CSAMT电阻率异常特征的能力,帮助我们去伪存真、准确地进行资料的地质推断。利用张量CSAMT二维正演方法,对三种地电模型的场源效应进行了研究,并给出了场源效应的电阻率异常等值线断面图。在实际CSAMT法工作中,由于场源位置不同造成观测结果中有可能存在场源效应的影响,在对CSAMT资料作地质解释时,应考虑场源效应的影响。
The study of field source effect on resistivity anomaly in controlled source audio magnetotelluric(CSAMT)will help to improve the ability of recognizing the resistivity anomaly feature in CSAMT.It can help us to get reliable and accurate geological inference with CSAMT data.In this paper,the field source effect of three geoelectrical models is studied by using the tensor CSAMT two-dimensional forward modeling and the sectional views of resistivity anomaly contours with field source effect are given respectively.In CSAMT field work,the observation data may be effected by field source effect because of different location of the field source.The field source effect should be considered when CSAMT data is used in geological interpretation.
作者
王一鸣
张国鸿
尤淼
陈海波
WANG Yiming;ZHANG Guohong;YOU Miao;CHEN Haibo(Institute of Geophysical and Geochemical Survey Technology of Anhui Province,Hefei 230022,China;Institute of Exploration Technology of Anhui Province,Hefei 230031,China)
出处
《物探化探计算技术》
CAS
CSCD
2018年第1期82-88,共7页
Computing Techniques For Geophysical and Geochemical Exploration
基金
安徽省国土资源科技项目(2013-k-04)
关键词
张量CSAMT
场源效应
正演方法
模拟
tensor CSAMT
field source effect
forward modeling
simulation
