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Response of surface-to-borehole SOTEM method on 2D earth

文献类型：期刊论文

作者Chen, Weiying1; Khan, Muhammad Younis1,2; Xue, Guoqiang1
刊名JOURNAL OF GEOPHYSICS AND ENGINEERING
出版日期2017-08-01
卷号14期号:4页码:987-997
关键词TEM SOTEM surface-to-borehole 2D FDTD modeling surface inhomogeneities
ISSN号1742-2132
DOI10.1088/1742-2140/aa6fcc
文献子类Article
英文摘要Borehole TEM methods are mostly based on a ground loop source. In this paper, we propose a new surface-to-borehole SOTEM method that uses a horizontal grounded-wire source. In this method, the transmitter is deployed on the ground near a borehole and the receiver is moved along the borehole to record the transient signal. In order to gain a basic understanding of this method, we analyzed the response characteristics of a rectangular body in a homogeneous half space based on a pure two-dimensional (2D) modeling scheme. The electric field and magnetic field (time derivative) are obtained by using 2D finite-difference time-domain (FDTD) modeling. We demonstrated that the targets-especially the conductive targets-can be reflected according to the borehole SOTEM responses. The location and the electrical properties of the targets can also be estimated by qualitatively analyzing the response curves. However, the anomalous amplitude is weakened when the surface layer contains local inhomogeneous bodies or exhibits a. conductive overburden. Compared with a loop source borehole TEM, electromagnetic fields for a borehole SOTEM decay more slowly. and show greater sensitivity to anomalous bodies. This study provides. aid for. further data interpretation, and also indicates that surface-to-borehole SOTEM is an effective method for underground detection.
WOS关键词TRANSIENT ELECTROMAGNETIC RESPONSES ; CONDUCTIVE HOST ; SYSTEM ; FIELDS
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000404640000001
出版者IOP PUBLISHING LTD
资助机构Natural Science Foundation of China(41474095) ; Open Foundation of Key Laboratory of Mineral Resources, Chinese Academy of Sciences(KLMR2015-09) ; China Postdoctoral Science Foundation(2016M601121) ; Natural Science Foundation of China(41474095) ; Open Foundation of Key Laboratory of Mineral Resources, Chinese Academy of Sciences(KLMR2015-09) ; China Postdoctoral Science Foundation(2016M601121) ; Natural Science Foundation of China(41474095) ; Open Foundation of Key Laboratory of Mineral Resources, Chinese Academy of Sciences(KLMR2015-09) ; China Postdoctoral Science Foundation(2016M601121) ; Natural Science Foundation of China(41474095) ; Open Foundation of Key Laboratory of Mineral Resources, Chinese Academy of Sciences(KLMR2015-09) ; China Postdoctoral Science Foundation(2016M601121)
源URL[http://ir.iggcas.ac.cn/handle/132A11/49285]  
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Chen, Weiying
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
2.Univ Peshawar, Natl Ctr Excellence Geol, Peshawar 25120, Pakistan
推荐引用方式
GB/T 7714		 Chen, Weiying,Khan, Muhammad Younis,Xue, Guoqiang. Response of surface-to-borehole SOTEM method on 2D earth[J]. JOURNAL OF GEOPHYSICS AND ENGINEERING,2017,14(4):987-997.
APA Chen, Weiying,Khan, Muhammad Younis,&Xue, Guoqiang.(2017).Response of surface-to-borehole SOTEM method on 2D earth.JOURNAL OF GEOPHYSICS AND ENGINEERING,14(4),987-997.
MLA Chen, Weiying,et al."Response of surface-to-borehole SOTEM method on 2D earth".JOURNAL OF GEOPHYSICS AND ENGINEERING 14.4(2017):987-997.

入库方式： OAI收割

来源：地质与地球物理研究所

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