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Analysis on equivalence effect of the grounded-wire transient electromagnetic method
Ma, Zhenjun1,2,3,4; Di, Qingyun1,2,3,4; Liang, Pengfei1,2,3,4; Gao, Ya1,2,3,4; Xue, Guoqiang3,4,5
2020-10-01
Source PublicationJOURNAL OF APPLIED GEOPHYSICS
ISSN0926-9851
Volume181Pages:12
AbstractEquivalence causes non-uniqueness in interpretations of the grounded-wire transient electromagnetic method (TEM). Many different layered models may produce the same response curves practically. However, the conventional theory of equivalence is based on the three-layer geo-electric models while the earth may not be reducible to a simple three-layer structure. Therefore, it is important to perform research on equivalence based on more complex models to reduce the uncertainty the grounded-wire TEM interpretations. Here, we extend the theory of equivalence based on a multi-layer target in the grounded-wire TEM, consisting of SS-, HH-, and TT-type. The analysis of relative error is applied to investigate the effect of measured components and receiver locations on equivalence. The results show that equivalence of multi-model occurs when any of three conditions is satisfied: the longitudinal conductance is constant in the far area, the thickness of targets do not change, or the transverse conductance of a multilayer target remains unchanged. In order to largely resolve the effect of equivalence on data interpretation, a strategy combined with short-offset survey and joint inversion of the electric component and magnetic component is presented and verified by the field survey in Shanxi Province, China. (C) 2020 Elsevier B.V. All rights reserved.
KeywordThe grounded-wire TEM method Equivalence Receiver location Joint inversion
DOI10.1016/j.jappgeo.2020.104142
Funding OrganizationS & T Program of Beijing ; S & T Program of Beijing ; S & T Program of Beijing ; S & T Program of Beijing ; S & T Program of Beijing ; S & T Program of Beijing ; S & T Program of Beijing ; S & T Program of Beijing
WOS KeywordINDUCED POLARIZATION ; TEM ; INVERSION ; SOUNDINGS ; ZONES
Language英语
Funding ProjectS & T Program of Beijing[Z181100005718001]
Funding OrganizationS & T Program of Beijing ; S & T Program of Beijing ; S & T Program of Beijing ; S & T Program of Beijing ; S & T Program of Beijing ; S & T Program of Beijing ; S & T Program of Beijing ; S & T Program of Beijing
WOS Research AreaGeology ; Mining & Mineral Processing
WOS SubjectGeosciences, Multidisciplinary ; Mining & Mineral Processing
WOS IDWOS:000580644500006
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/98341
Collection页岩气与地质工程院重点实验室
矿产资源研究院重点实验室
深部资源探测先导技术与装备研发中心
Corresponding AuthorDi, Qingyun
Affiliation1.Chinese Acad Sci, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Frontier Technol & Equipment Dev Ctr Deep Resourc, Inst Geol & Geophys, Beijing 100029, Peoples R China
3.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
4.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
5.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
Recommended Citation
GB/T 7714
Ma, Zhenjun,Di, Qingyun,Liang, Pengfei,et al. Analysis on equivalence effect of the grounded-wire transient electromagnetic method[J]. JOURNAL OF APPLIED GEOPHYSICS,2020,181:12.
APA Ma, Zhenjun,Di, Qingyun,Liang, Pengfei,Gao, Ya,&Xue, Guoqiang.(2020).Analysis on equivalence effect of the grounded-wire transient electromagnetic method.JOURNAL OF APPLIED GEOPHYSICS,181,12.
MLA Ma, Zhenjun,et al."Analysis on equivalence effect of the grounded-wire transient electromagnetic method".JOURNAL OF APPLIED GEOPHYSICS 181(2020):12.
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