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Comparison of short-offset and long-offset grounded-wire transient electromagnetic responses based on the 3D model

文献类型：期刊论文

作者Chang, Jianghao1,3,6; Xue, Junjie4,6; Guo, Yongshuai5; Yi, Hongchun2; Li, Maofei1
刊名EXPLORATION GEOPHYSICS
出版日期2023-05-31
页码14
ISSN号0812-3985
关键词Transient electromagnetic method grounded-wire 3D modelling SOTEM
DOI10.1080/08123985.2023.2217192
英文摘要In this study, a recently developed time-domain electromagnetic method called the short-offset grounded-wire transient electromagnetic (SOTEM) method, which is a near-source observation method, was adopted to obtain strong signals and great detection depths. The responses of the SOTEM and long-offset transient electromagnetic (LOTEM) methods were compared to further guide and promote the SOTEM method. Currently, the comparison between SOTEM and LOTEM methods is primarily based on one-dimensional (1D) models. However, most geological bodies are three-dimensional (3D) structures. We investigated the responses of a grounded-wire transient electromagnetic method based on 3D models using the 3D finite-difference time-domain method. In addition, the signal strengths, detection sensitivities and detection depths of the SOTEM and LOTEM methods were compared. The results revealed that the field amplitudes of E-x (electrical component parallel to the transmitting source) and partial differential B-y/ partial differential t (magnetic component perpendicular to the transmitting source horizontally) were higher at the short offsets than at the long offsets. For the partial differential B-x/ partial differential t (magnetic component parallel to the transmitting source) and the vertical magnetic component partial differential B-z/ partial differential t, at initial times, the responses received would be stronger when closer to the transmitting source, whereas at later times, the responses would be stronger when farther from the source. E-x detection sensitivity increased with an increase in the offset at initial times, and increased with a decrease in the offset at later times. The detection sensitivities of the three magnetic field components at short offsets were higher than those at long offsets. The partial differential B-y/ partial differential t effective detection depth was the greatest. Generally, the effective detection depths of the three magnetic field components increased with decreasing offset. The range of the ratio of the horizontal distance, r, between the transmitting source and the target body to the effective detection depth H was 0.5-1.1.
WOS关键词SOUNDINGS ; INVERSION ; AREA
资助项目National Key R&D Program of China[2022YFC2903505] ; Natural Science Foundation of China (NSFC)[42030106] ; Science and Technology Project of Hebei Education Department[QN2022041] ; Key Laboratory of Intelligent Detection and Equipment for Underground Space of Beijing-Tianjin-Hebei Urban Agglomeration, Ministry of Natural Resources[ZB2022003] ; Natural Science Foundation of Chongqing[cstc2020jcyj-msxmX0676] ; National Pre-research Funds of Hebei GEO University in 2023[KY202301]
WOS研究方向Geochemistry & Geophysics
语种英语
出版者TAYLOR & FRANCIS LTD
WOS记录号WOS:000998919500001
资助机构National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; Natural Science Foundation of China (NSFC) ; Natural Science Foundation of China (NSFC) ; Natural Science Foundation of China (NSFC) ; Natural Science Foundation of China (NSFC) ; Science and Technology Project of Hebei Education Department ; Science and Technology Project of Hebei Education Department ; Science and Technology Project of Hebei Education Department ; Science and Technology Project of Hebei Education Department ; Key Laboratory of Intelligent Detection and Equipment for Underground Space of Beijing-Tianjin-Hebei Urban Agglomeration, Ministry of Natural Resources ; Key Laboratory of Intelligent Detection and Equipment for Underground Space of Beijing-Tianjin-Hebei Urban Agglomeration, Ministry of Natural Resources ; Key Laboratory of Intelligent Detection and Equipment for Underground Space of Beijing-Tianjin-Hebei Urban Agglomeration, Ministry of Natural Resources ; Key Laboratory of Intelligent Detection and Equipment for Underground Space of Beijing-Tianjin-Hebei Urban Agglomeration, Ministry of Natural Resources ; Natural Science Foundation of Chongqing ; Natural Science Foundation of Chongqing ; Natural Science Foundation of Chongqing ; Natural Science Foundation of Chongqing ; National Pre-research Funds of Hebei GEO University in 2023 ; National Pre-research Funds of Hebei GEO University in 2023 ; National Pre-research Funds of Hebei GEO University in 2023 ; National Pre-research Funds of Hebei GEO University in 2023 ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; Natural Science Foundation of China (NSFC) ; Natural Science Foundation of China (NSFC) ; Natural Science Foundation of China (NSFC) ; Natural Science Foundation of China (NSFC) ; Science and Technology Project of Hebei Education Department ; Science and Technology Project of Hebei Education Department ; Science and Technology Project of Hebei Education Department ; Science and Technology Project of Hebei Education Department ; Key Laboratory of Intelligent Detection and Equipment for Underground Space of Beijing-Tianjin-Hebei Urban Agglomeration, Ministry of Natural Resources ; Key Laboratory of Intelligent Detection and Equipment for Underground Space of Beijing-Tianjin-Hebei Urban Agglomeration, Ministry of Natural Resources ; Key Laboratory of Intelligent Detection and Equipment for Underground Space of Beijing-Tianjin-Hebei Urban Agglomeration, Ministry of Natural Resources ; Key Laboratory of Intelligent Detection and Equipment for Underground Space of Beijing-Tianjin-Hebei Urban Agglomeration, Ministry of Natural Resources ; Natural Science Foundation of Chongqing ; Natural Science Foundation of Chongqing ; Natural Science Foundation of Chongqing ; Natural Science Foundation of Chongqing ; National Pre-research Funds of Hebei GEO University in 2023 ; National Pre-research Funds of Hebei GEO University in 2023 ; National Pre-research Funds of Hebei GEO University in 2023 ; National Pre-research Funds of Hebei GEO University in 2023 ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; Natural Science Foundation of China (NSFC) ; Natural Science Foundation of China (NSFC) ; Natural Science Foundation of China (NSFC) ; Natural Science Foundation of China (NSFC) ; Science and Technology Project of Hebei Education Department ; Science and Technology Project of Hebei Education Department ; Science and Technology Project of Hebei Education Department ; Science and Technology Project of Hebei Education Department ; Key Laboratory of Intelligent Detection and Equipment for Underground Space of Beijing-Tianjin-Hebei Urban Agglomeration, Ministry of Natural Resources ; Key Laboratory of Intelligent Detection and Equipment for Underground Space of Beijing-Tianjin-Hebei Urban Agglomeration, Ministry of Natural Resources ; Key Laboratory of Intelligent Detection and Equipment for Underground Space of Beijing-Tianjin-Hebei Urban Agglomeration, Ministry of Natural Resources ; Key Laboratory of Intelligent Detection and Equipment for Underground Space of Beijing-Tianjin-Hebei Urban Agglomeration, Ministry of Natural Resources ; Natural Science Foundation of Chongqing ; Natural Science Foundation of Chongqing ; Natural Science Foundation of Chongqing ; Natural Science Foundation of Chongqing ; National Pre-research Funds of Hebei GEO University in 2023 ; National Pre-research Funds of Hebei GEO University in 2023 ; National Pre-research Funds of Hebei GEO University in 2023 ; National Pre-research Funds of Hebei GEO University in 2023 ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; Natural Science Foundation of China (NSFC) ; Natural Science Foundation of China (NSFC) ; Natural Science Foundation of China (NSFC) ; Natural Science Foundation of China (NSFC) ; Science and Technology Project of Hebei Education Department ; Science and Technology Project of Hebei Education Department ; Science and Technology Project of Hebei Education Department ; Science and Technology Project of Hebei Education Department ; Key Laboratory of Intelligent Detection and Equipment for Underground Space of Beijing-Tianjin-Hebei Urban Agglomeration, Ministry of Natural Resources ; Key Laboratory of Intelligent Detection and Equipment for Underground Space of Beijing-Tianjin-Hebei Urban Agglomeration, Ministry of Natural Resources ; Key Laboratory of Intelligent Detection and Equipment for Underground Space of Beijing-Tianjin-Hebei Urban Agglomeration, Ministry of Natural Resources ; Key Laboratory of Intelligent Detection and Equipment for Underground Space of Beijing-Tianjin-Hebei Urban Agglomeration, Ministry of Natural Resources ; Natural Science Foundation of Chongqing ; Natural Science Foundation of Chongqing ; Natural Science Foundation of Chongqing ; Natural Science Foundation of Chongqing ; National Pre-research Funds of Hebei GEO University in 2023 ; National Pre-research Funds of Hebei GEO University in 2023 ; National Pre-research Funds of Hebei GEO University in 2023 ; National Pre-research Funds of Hebei GEO University in 2023
源URL[http://ir.iggcas.ac.cn/handle/132A11/110933]  
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
通讯作者Xue, Junjie
作者单位1.Hebei GEO Univ, Key Lab Intelligent Detect & Equipment Underground, Minist Nat Resources, Shijiazhuang, Peoples R China
2.Chongqing Res Inst, China Coal Technol & Engn Grp, Chongqing, Peoples R China
3.Hebei GEO Univ, Ctr Integrated Grav Magnet & Elect Prospecting, Shijiazhuang, Peoples R China
4.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
5.Hebei Prov Bur Geol & Mineral Resources, Hydrogeol Engn Geol Brigade 3, Hengshui, Peoples R China
6.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Chang, Jianghao,Xue, Junjie,Guo, Yongshuai,et al. Comparison of short-offset and long-offset grounded-wire transient electromagnetic responses based on the 3D model[J]. EXPLORATION GEOPHYSICS,2023:14.
APA Chang, Jianghao,Xue, Junjie,Guo, Yongshuai,Yi, Hongchun,&Li, Maofei.(2023).Comparison of short-offset and long-offset grounded-wire transient electromagnetic responses based on the 3D model.EXPLORATION GEOPHYSICS,14.
MLA Chang, Jianghao,et al."Comparison of short-offset and long-offset grounded-wire transient electromagnetic responses based on the 3D model".EXPLORATION GEOPHYSICS (2023):14.

入库方式： OAI收割

来源：地质与地球物理研究所

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