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A comparative study of inline and broadside time-domain controlled-source electromagnetic methods for mapping resistive targets on land

文献类型：期刊论文

作者Li, Hai1,2; Di, Qing-Yun2,3,4; Xue, Guo-Qiang1,2,4
刊名GEOPHYSICS
出版日期2019-07-01
卷号84期号:4页码:B235-B246
ISSN号0016-8033
DOI10.1190/GEO2018-0056.1
英文摘要The land-based controlled-source electromagnetic (CSEM) method is an important tool in mapping subsurface resistivity contrast, especially for conductive target embedded in a resistive environment. For resistive targets on land, choosing an appropriate configuration to a specific field observation is quite confusing, due to the lack of systematic comparisons of different methods. We have conducted a comparison between the broadside and inline time-domain CSEM methods, using the short-offset transient electromagnetic (SOTEM) method and multitransient electromagnetic (MTEM) method as representatives respectively. We first compared the resolution of these methods by analyzing the relative target response and the misfit space of the designed models. We found that the inline MTEM method had advantages over the SOTEM method in resolving the thin resistive layer. We have developed a weighted joint inversion scheme to enhance the vertical resolution of the MTEM method. We then applied the methods to the investigation of a giant molybdenum deposit. The orebody, which is the real target of the exploration, does not have a conductivity contrast with its host. However, it sits on top of the granite porphyry, which is resistive compared with its surroundings, and so the granite porphyry becomes the resistive target for EM exploration. The results indicated that both methods are effective in locating large resistive target, yet the MTEM method outperforms the SOTEM method when a thick conductive overburden is presented.
WOS关键词PORPHYRY MO DEPOSIT ; INNER-MONGOLIA ; CSEM DATA ; INVERSION ; EXPLORATION ; DIPOLE
资助项目Beijing National Science Foundation[8184089] ; Natural Science Foundation of China[41804074] ; China Postdoctoral Science Foundation[2017M610981]
WOS研究方向Geochemistry & Geophysics
语种英语
出版者SOC EXPLORATION GEOPHYSICISTS
WOS记录号WOS:000480678900006
资助机构Beijing National Science Foundation ; Beijing National Science Foundation ; Beijing National Science Foundation ; Beijing National Science Foundation ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Beijing National Science Foundation ; Beijing National Science Foundation ; Beijing National Science Foundation ; Beijing National Science Foundation ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Beijing National Science Foundation ; Beijing National Science Foundation ; Beijing National Science Foundation ; Beijing National Science Foundation ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Beijing National Science Foundation ; Beijing National Science Foundation ; Beijing National Science Foundation ; Beijing National Science Foundation ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation
源URL[http://ir.iggcas.ac.cn/handle/132A11/93367]  
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
地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室
通讯作者Li, Hai
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Li, Hai,Di, Qing-Yun,Xue, Guo-Qiang. A comparative study of inline and broadside time-domain controlled-source electromagnetic methods for mapping resistive targets on land[J]. GEOPHYSICS,2019,84(4):B235-B246.
APA Li, Hai,Di, Qing-Yun,&Xue, Guo-Qiang.(2019).A comparative study of inline and broadside time-domain controlled-source electromagnetic methods for mapping resistive targets on land.GEOPHYSICS,84(4),B235-B246.
MLA Li, Hai,et al."A comparative study of inline and broadside time-domain controlled-source electromagnetic methods for mapping resistive targets on land".GEOPHYSICS 84.4(2019):B235-B246.

入库方式： OAI收割

来源：地质与地球物理研究所

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