A comparison of loop time-domain electromagnetic and short-offset transient electromagnetic methods for mapping water-enriched zones - A case history in Shaanxi, China

doi:10.1190/GEO2017-0070.1

	A comparison of loop time-domain electromagnetic and short-offset transient electromagnetic methods for mapping water-enriched zones - A case history in Shaanxi, China
	Chen, Weiying 1; Xue, Guoqiang 1; Olatayo, Afolagboye Lekan 2; Chen, Kang 1; Khan, Muhammad Younis 1,3; Chen, Weichang 2; Zhang, Linbo 1; Chen, Wen 1
刊名	GEOPHYSICS
	2017-11-01
卷号	82 期号:6 页码:B201-B208
ISSN号	0016-8033
DOI	10.1190/GEO2017-0070.1
文献子类	Article
英文摘要	Increases in the mining depth of coal pose a significant challenge to the conventional loop source time-domain electromagnetic (TEM) method that requires significant enlargement of the loop size and transmitting current to realize the deeper sounding results required. As an alternative, TEM devices based on a grounded wire source are generally used to solve detections deeper than several hundred meters. To map the water-enriched zones buried underneath approximately 1000 m at a coal mine in Shaanxi, China, loop TEM and short-offset transient electromagnetic (SOTEM) measurements were conducted. We carried out 1D forward modeling and inversion constrained by drilling information, and the results reveal that the resolution capability of loop TEM and SOTEM is almost the same in detecting a conductive layer in the absence of any noise. However, for a given noise level and decay time, the SOTEM method provides a deeper investigation than loop TEM without compromising sensitivity. The field examples validated the synthetic results. The loop TEM with dimensions of 800 x 800 m realized a maximum depth of 1000 m, whereas the reliable detection depth of 1500 m was achieved by using a 723 m long grounded wire source using the SOTEM method. Moreover, the labor required is significantly reduced, and the efficiency is dramatically raised using the SOTEM method. Our results predict that the SOTEM method should play a more important role in deep hydrogeophysical investigations.
WOS关键词	TEM ; INVERSION ; DEPTH ; GROUNDWATER ; AREA
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SOC EXPLORATION GEOPHYSICISTS
WOS记录号	WOS:000417973300047
资助机构	Natural Science Foundation of China(41474095) ; Natural Science Foundation of China(41474095) ; Open Foundation of Key Laboratory of Mineral Resources, Chinese Academy of Sciences(KLMR2015-09) ; Open Foundation of Key Laboratory of Mineral Resources, Chinese Academy of Sciences(KLMR2015-09) ; China Postdoctoral Science Foundation(2016M601121) ; China Postdoctoral Science Foundation(2016M601121) ; Natural Science Foundation of China(41474095) ; Natural Science Foundation of China(41474095) ; Open Foundation of Key Laboratory of Mineral Resources, Chinese Academy of Sciences(KLMR2015-09) ; Open Foundation of Key Laboratory of Mineral Resources, Chinese Academy of Sciences(KLMR2015-09) ; China Postdoctoral Science Foundation(2016M601121) ; China Postdoctoral Science Foundation(2016M601121) ; Natural Science Foundation of China(41474095) ; Natural Science Foundation of China(41474095) ; Open Foundation of Key Laboratory of Mineral Resources, Chinese Academy of Sciences(KLMR2015-09) ; Open Foundation of Key Laboratory of Mineral Resources, Chinese Academy of Sciences(KLMR2015-09) ; China Postdoctoral Science Foundation(2016M601121) ; China Postdoctoral Science Foundation(2016M601121) ; Natural Science Foundation of China(41474095) ; Natural Science Foundation of China(41474095) ; Open Foundation of Key Laboratory of Mineral Resources, Chinese Academy of Sciences(KLMR2015-09) ; Open Foundation of Key Laboratory of Mineral Resources, Chinese Academy of Sciences(KLMR2015-09) ; China Postdoctoral Science Foundation(2016M601121) ; China Postdoctoral Science Foundation(2016M601121)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/82288]
专题	中国科学院地质与地球物理研究所
通讯作者	Chen, Weiying
作者单位	1.Chinese Acad Sci, Key Lab Mineral Resources, Inst Geol & Geophys, Beijing, Peoples R China 2.Chinese Acad Sci, Key Lab Shale Gas & Geoengn, Inst Geol & Geophys, Beijing, Peoples R China 3.Univ Peshawar, Natl Ctr Excellence Geol, Peshawar, Pakistan
推荐引用方式 GB/T 7714	Chen, Weiying,Xue, Guoqiang,Olatayo, Afolagboye Lekan,et al. A comparison of loop time-domain electromagnetic and short-offset transient electromagnetic methods for mapping water-enriched zones - A case history in Shaanxi, China[J]. GEOPHYSICS,2017,82(6):B201-B208.
APA	Chen, Weiying.,Xue, Guoqiang.,Olatayo, Afolagboye Lekan.,Chen, Kang.,Khan, Muhammad Younis.,...&Chen, Wen.(2017).A comparison of loop time-domain electromagnetic and short-offset transient electromagnetic methods for mapping water-enriched zones - A case history in Shaanxi, China.GEOPHYSICS,82(6),B201-B208.
MLA	Chen, Weiying,et al."A comparison of loop time-domain electromagnetic and short-offset transient electromagnetic methods for mapping water-enriched zones - A case history in Shaanxi, China".GEOPHYSICS 82.6(2017):B201-B208.