Analysis of Long-offset Transient Electromagnetic (LOTEM) Data in Time, Frequency, and Pseudo-seismic Domain

doi:10.2113/JEEG23.1.15

	Analysis of Long-offset Transient Electromagnetic (LOTEM) Data in Time, Frequency, and Pseudo-seismic Domain
	Khan, Muhammad Younis 1,2; Xue, Guo-qiang 1; Chen, Wei-ying 1; Zhong, Hua-sen 1
刊名	JOURNAL OF ENVIRONMENTAL AND ENGINEERING GEOPHYSICS
	2018-03-01
卷号	23 期号:1 页码:15-32
ISSN号	1083-1363
DOI	10.2113/JEEG23.1.15
文献子类	Article
英文摘要	Long-offset transient electromagnetic (LOTEM) has received great attention in mineral, hydrocarbon and hydrogeological investigations for the last several years. Conventionally, TEM soundings have been presented as apparent resistivity curves as function of time. With development of sophisticated computational algorithms, it became possible to extract more realistic geoelectric information by applying inversion programs to 1-D and 3-D problems. Here, we analyze LOTEM data by carrying out analysis in time, frequency and pseudo-seismic domain supported by borehole information. At first, H, K, A & Q type geoelectric models are processed using a proven inversion program (1-D Occam inversion). Second, time-to-frequency transformation is conducted from TEM rho(a)(f) curves for the same models based on all-time apparent resistivity curves. Third, 1-D Bostick's algorithm was applied to the transformed resistivity. Finally, EM diffusion field is transformed into propagating wave field and constructed pseudo-seismic section. The transformed seismic-like wave indicates that some reflection and refraction phenomena appear when the EM wave field interacts with a geoelectric interface at different depth intervals due to contrast in resistivity. In all three cases, synthetic tests showed that conductive anomaly in resistive host environment can be retrieved more clearly than resistive target. A case study illustrates the successful application of proposed approach in recovering a water-filled mined-out area in a coal field located in Ye county, Henan province, China. The results support the introduction of pseudo-seismic imaging technology in long-offset version of TEM which can also be an useful aid if integrated with seismic reflection technique to explore possibilities for high resolution EM imaging in future.
WOS关键词	APPLIED GEOPHYSICS ; IMAGE-RESTORATION ; SOUNDING DATA ; FIELD ; INVERSION ; TEM ; RESISTIVITY ; ALGORITHM ; REGULARIZATION ; TRANSFORMATION
WOS研究方向	Geochemistry & Geophysics ; Engineering
语种	英语
出版者	ENVIRONMENTAL ENGINEERING GEOPHYSICAL SOC
WOS记录号	WOS:000427796100004
资助机构	National Key R&D program of China(2017YFC 0601204) ; National Key R&D program of China(2017YFC 0601204) ; Natural Science Foundation of China (NSFC)(41474095) ; Natural Science Foundation of China (NSFC)(41474095) ; CAS-TWAS ; CAS-TWAS ; National Key R&D program of China(2017YFC 0601204) ; National Key R&D program of China(2017YFC 0601204) ; Natural Science Foundation of China (NSFC)(41474095) ; Natural Science Foundation of China (NSFC)(41474095) ; CAS-TWAS ; CAS-TWAS ; National Key R&D program of China(2017YFC 0601204) ; National Key R&D program of China(2017YFC 0601204) ; Natural Science Foundation of China (NSFC)(41474095) ; Natural Science Foundation of China (NSFC)(41474095) ; CAS-TWAS ; CAS-TWAS ; National Key R&D program of China(2017YFC 0601204) ; National Key R&D program of China(2017YFC 0601204) ; Natural Science Foundation of China (NSFC)(41474095) ; Natural Science Foundation of China (NSFC)(41474095) ; CAS-TWAS ; CAS-TWAS
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/82974]
专题	中国科学院地质与地球物理研究所
通讯作者	Khan, Muhammad Younis
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing, Peoples R China 2.Univ Peshawar, Natl Ctr Excellence Geol, Peshawar 25120, Pakistan 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Khan, Muhammad Younis,Xue, Guo-qiang,Chen, Wei-ying,et al. Analysis of Long-offset Transient Electromagnetic (LOTEM) Data in Time, Frequency, and Pseudo-seismic Domain[J]. JOURNAL OF ENVIRONMENTAL AND ENGINEERING GEOPHYSICS,2018,23(1):15-32.
APA	Khan, Muhammad Younis,Xue, Guo-qiang,Chen, Wei-ying,&Zhong, Hua-sen.(2018).Analysis of Long-offset Transient Electromagnetic (LOTEM) Data in Time, Frequency, and Pseudo-seismic Domain.JOURNAL OF ENVIRONMENTAL AND ENGINEERING GEOPHYSICS,23(1),15-32.
MLA	Khan, Muhammad Younis,et al."Analysis of Long-offset Transient Electromagnetic (LOTEM) Data in Time, Frequency, and Pseudo-seismic Domain".JOURNAL OF ENVIRONMENTAL AND ENGINEERING GEOPHYSICS 23.1(2018):15-32.