Review of the key techniques on short-offset electromagnetic detection

doi:10.6038/cjg2018L0003

	Review of the key techniques on short-offset electromagnetic detection
	He JiShan 1; Xue GuoQiang 2,3
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	2018
卷号	61 期号:1 页码:1-8
关键词	Near-source Electromagnetic Prospecting Central-loop Tem Short-offset Tem Frequency-domain Sounding Wide Field Electromagnetic Method
ISSN号	0001-5733
DOI	10.6038/cjg2018L0003
文献子类	Review
英文摘要	Because the detecting effect of artificial-source electromagnetic methods is related to transceiver distance, taking the analysis expression and apparent resistivity algorithm as starting point, this paper reviews the development process from central-loop to modified central-loop TEM (Transient Electromagnetic Method), and summaries the principle of near-source prospecting from central-loop to grounded-wire source TEM. And the case history of SOTEM (Short-Offset TEM), which expands observation area of LOTEM (Long-Offset TEM) from several times of detection depth to near-source zone, is enumerated. For frequency-domain artificial-source electromagnetic methods, we present CSAMT (Controlled Source Audio-frequency Magnetotelluric) developed from MT (Magnetotelluric) and show the different way of frequency-domain electromagnetic sounding. Frequency sounding method enlarges the observation area from far-to middle-zone while the wide-field electromagnetic method improves interpretation accuracy and realize middlezone data collection through whole zone apparent resistivity. If self-field and radiation field could be separated from each other based on the point-charge infinitesimal, frequency-domain near source prospecting would be possible in the future.
WOS关键词	GROUNDED-WIRE SOURCE ; LOOP TEM ; DEPTH ; FIELD
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000422703100001
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/82508]
专题	中国科学院地质与地球物理研究所
通讯作者	Xue GuoQiang
作者单位	1.Cent S Univ, Sch Geosci & Infophys, Changsha 410083, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	He JiShan,Xue GuoQiang. Review of the key techniques on short-offset electromagnetic detection[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2018,61(1):1-8.
APA	He JiShan,&Xue GuoQiang.(2018).Review of the key techniques on short-offset electromagnetic detection.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,61(1),1-8.
MLA	He JiShan,et al."Review of the key techniques on short-offset electromagnetic detection".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 61.1(2018):1-8.