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A Surface-to-Borehole TEM System Based on Grounded-wire Sources: Synthetic Modeling and Data Inversion

文献类型：期刊论文

作者Chen, Weiying1,3,4; Han, Sixu2; Khan, Muhammad Younis5; Chen, Wen1,3,4; He, Yiming1,3,4; Zhang, Linbo1,3,4; Hou, Dongyang1,3,4; Xue, Guoqiang1,3,4
刊名PURE AND APPLIED GEOPHYSICS
出版日期2020-04-07
页码10
关键词Transient electromagnetic method electric source surface-to-borehole underground Occam's inversion
ISSN号0033-4553
DOI10.1007/s00024-020-02477-1
英文摘要The surface-to-borehole transient electromagnetic (TEM) method, which uses a rectangular loop as its source, has shown great potential in mineral exploration at greater depth. However, recent studies have demonstrated that a grounded-wire source can resolve the resistive targets and provide detection at greater depths than the loop source. Thus, we propose a surface-to-borehole TEM method using a grounded wire as a transmitter at short offsets. We conducted numerical experiments to explain the variation of different parameters and its comparable effects on the TEM transients. Similarly, a systematic comparison of the cross-sectional electric field distribution maps, borehole profiles of the time derivatives of the magnetic field, qualitatively reveal that the proposed method induces detectable responses for conductive and resistive targets at greater depths. In the present study, unlike the loop source configuration, the time derivative of an underground magnetic field in horizontal direction showed high sensitivity to resistive bodies. Furthermore, 1-D inversion was performed to provide quantitative interpretation of the borehole data. The 1-D inversion of the surface and borehole data was realized using an Occam-type inversion scheme. The results of both synthetic and field data indicate that inverting the surface or borehole data separately resulted in degraded resolution in both shallow and deep earth. Thus, we also compared the results from the inversions of surface and borehole data in order to explore the merits of joint inversion in resolving shallow and deep structures.
WOS关键词TRANSIENT ELECTROMAGNETIC SURVEYS ; CONDUCTIVE HOST ; TIME
资助项目National Natural Science Foundation of China[41704076] ; Key Research Program of the Institute of Geology & Geophysics, CAS[IGGCAS-201901]
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000524629600001
出版者SPRINGER BASEL AG
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS
源URL[http://ir.iggcas.ac.cn/handle/132A11/95560]  
专题地质与地球物理研究所_中国科学院矿产资源研究重点实验室
通讯作者Chen, Weiying
作者单位1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
2.Guangdong Geol & Mineral Bur, Geophys Prospecting Team, Guangzhou 510800, Peoples R China
3.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China
4.Chinese Acad Sci, Key Lab Mineral Resources, Inst Geol & Geophys, Beijing 100029, Peoples R China
5.Univ Peshawar, Natl Ctr Excellence Geol, Peshawar 25120, Pakistan
推荐引用方式
GB/T 7714		 Chen, Weiying,Han, Sixu,Khan, Muhammad Younis,et al. A Surface-to-Borehole TEM System Based on Grounded-wire Sources: Synthetic Modeling and Data Inversion[J]. PURE AND APPLIED GEOPHYSICS,2020:10.
APA Chen, Weiying.,Han, Sixu.,Khan, Muhammad Younis.,Chen, Wen.,He, Yiming.,...&Xue, Guoqiang.(2020).A Surface-to-Borehole TEM System Based on Grounded-wire Sources: Synthetic Modeling and Data Inversion.PURE AND APPLIED GEOPHYSICS,10.
MLA Chen, Weiying,et al."A Surface-to-Borehole TEM System Based on Grounded-wire Sources: Synthetic Modeling and Data Inversion".PURE AND APPLIED GEOPHYSICS (2020):10.

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来源：地质与地球物理研究所

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