摘要
铜川市调查区工业干扰强烈,地层结构复杂。为了研究在城市强电磁干扰环境下大地电磁远参考技术应用效果,在铜川市调查区布设了一条音频大地电磁法剖面,采用非线性共轭梯度(NLCG)法进行数据反演,并结合工作区地质资料进行分析。结果表明:应用远参考技术对大地电磁数据进行处理,可以有效改善受噪数据质量,反演成果与地质资料更为吻合。
The industrial interference in Tongchuan City survey area is strong,where stratigraphic sedimentary types are complex,the lithology varies remarkably,the terrain is fluctuating,and the gully and the ridge are crisscross. The audiomagnetotelluric method（AMT） is characterized by a single point of measurement,great detection depth,high horizontal resolution and other technical advantages. At the same time,the magnetotelluric remote reference technology can suppress random noise,restore the ＂ dead band＂ data,and improve the magnetotelluric data quality. In order to study the application effect of magnetotelluric remote reference technology in the urban strong electromagnetic interference environment,the authors constructed an audio magnetotelluric profile in Tongchuan investigation area. The nonlinear conjugate gradient（NLCG） method was used to carry out the data inversion and data analysis. The results show that the application of remote reference technology to the processing of magnetotelluric data can effectively improve the quality of noise data,and the inversion results are more consistent with the geological data.
作者
徐志敏
辛会翠
谭新平
徐张建
XU Zhi-Min;XIN Hui-Cui;TAN Xin-Ping;XU Zhang-Jian(Northwest Research Institute of Engineering investigations and design, Xi＇an 710003, China;Institute of Geosciences and Info Physics, Central SouthUniversity, Changsha 410083, China;Shaanxi Energy Institute, Xianyang 712000, China)
出处
《物探与化探》
CAS
CSCD
北大核心
2018年第3期560-568,共9页
Geophysical and Geochemical Exploration
基金
中国地质调查局项目(12120114056901)
关键词
音频大地电磁测深
远参考法
强电磁干扰区
卡尼亚电阻率
反演
audiomagnetotelluric method
Mt remote reference method
strong electromagnetic interference region
apparent resistivity curves
inversion
