Theoretical study on the errors caused by dipole hypothesis of large-loop TEM response

doi:10.3969/j.issn.0001-5733.2011.09.022

	Theoretical study on the errors caused by dipole hypothesis of large-loop TEM response
	Xue Guo-Qiang 1; Yan Shu 2; Zhou Nan-Nan 1
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	2011-09-01
卷号	54 期号:9 页码:2389-2396
关键词	Large-loop Transient Electromagnetic Method Central-loop Fix-loop Source Dipole Infinitesimal Point Charge Infinitesimal
ISSN号	0001-5733
DOI	10.3969/j.issn.0001-5733.2011.09.022
文献子类	Article
英文摘要	There is some error between field approximate solution and loop-source exact solutions. In this paper, the error caused by dipole approximation is researched. The vector and scalar potential function was analyzed by "matching" the result of constant current field to TEM response. The error between dipole approximate solution and loop-source exact solutions of magnetic dipole source and electric dipole source was calculated in the condition of static field. Then, we analyzed the error between harmonic dipole and point charge. We draw the conclusion that the condition of dipole is not met in the loop and the calculation error can not be omitted. After that, we discuss over the ability of using transient point charge as the basic solution. Based on the theory that time-varying point electric charge can transmit electromagnetic wave, it is found that point charge infinitesimal instead of dipole infinitesimal is the smallest unit. This paper gives the important idea of "matching" the study result of electrostatic field point charge to the result of time-domain field. After the analysis of possibility of point charge infinitesimal hypothesis, and "matching" the solution of point charge infinitesimal in microwave antenna theory to time domain electromagnetic field, the Postpone vector Potential function of point charge infinitesimal is obtained at last which makes the foundation for the studying of the exact solution based on the point charge and searching for the direct transient-field solution.
WOS关键词	TRANSIENT-RESPONSE ; RECTANGULAR LOOP
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000295500000022
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/73920]
专题	中国科学院地质与地球物理研究所
通讯作者	Xue Guo-Qiang
作者单位	1.Chinese Acad Sci, Key Lab Mineral Resources, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Jiangsu Univ, Sch Comp Sci & Telecommun Engn, Zhenjiang 212013, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Xue Guo-Qiang,Yan Shu,Zhou Nan-Nan. Theoretical study on the errors caused by dipole hypothesis of large-loop TEM response[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2011,54(9):2389-2396.
APA	Xue Guo-Qiang,Yan Shu,&Zhou Nan-Nan.(2011).Theoretical study on the errors caused by dipole hypothesis of large-loop TEM response.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,54(9),2389-2396.
MLA	Xue Guo-Qiang,et al."Theoretical study on the errors caused by dipole hypothesis of large-loop TEM response".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 54.9(2011):2389-2396.