Groundwater resources survey of tongchuan city using the audio magnetotelluric method

作     者：Xu Zhi-min Tang Jing-tian Li Guang Xin Hui-Cui Xu Zhang-jian Tan Xin-ping LI Jin 徐志敏;汤井田;李广;辛会翠;徐张建;谭新平;李晋

作者机构：Heibei Instrument&Meter Engineering Technology Research CenterChengde Petroleum CollegeChengde 067000China School of Geosciences and Info-PhysicsCentral South UniversityChangsha 410083China Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment MonitoringMinistry of Education(Central South University)Changsha 410083China Northwest Research Institution of Engineering Investigations and DesignXi’an 710003China School of Geophysics and Measurement-control TechnologyNanchang 330013China College of Information Science and EngineeringHunan Normal UniversityChangsha 410081China 

出 版 物：《Applied Geophysics》 (应用地球物理（英文版）)

年 卷 期：2020年第17卷第5期

页      面：660-671,900页

核心收录：

学科分类：081801[工学-矿产普查与勘探] 081802[工学-地球探测与信息技术] 081803[工学-地质工程] 08[工学] 0818[工学-地质资源与地质工程] 

基　　金：This work is financially supported by the National 863 Program(No:2014AA06A602) National Natural Science Foundation of China(Nos.41404111,41904076 and 42074084) 

主　　题：urban geology audio magnetotelluric sounding method electrical structure groundwater resources 

摘      要：The development of Tongchuan City,Shaanxi Province,located in the northwestern region of China,is restricted by water *** direct current resistivity and induced polarization sounding methods are typically applied in finding urban *** methods,however,are not effective due to their complicated topography and geological *** application practice shows that the audio magnetotelluric(AMT)method has a large depth of exploration,high work effi ciency,and high lateral *** investigate the distribution of groundwater resources,we deployed three audio-frequency magnetotelluric profiles in the city *** impedance tensor information of AMT data is obtained using *** data dimension analysis reveals that the two-dimensional structural features of the observation area are *** main structure of the observation area is about 45°northeast,as indicated by structural trend analysis.A shallow two-dimensional electrical profile of 1 km in Tongchuan City is obtained by two-dimensional nonlinear conjugate gradient ***,combined with regional geological information,the geological structure characteristics reflected by the electrical profile were obtained along with the detailed characteristics of water-rich structures in the *** infl uence of the structure on the groundwater distribution was analyzed,and the water-rich areas were identifi *** work contributes to the prospective development of Tongchuan City.