IGGCAS OpenIR  > 页岩气与地质工程院重点实验室
2D FEM modeling on the multi-channel transient electromagnetic method
Wang Ruo1,2,3; Wang MiaoYue1,2,3; Di QingYun1,2,3; Xue GuoQiang1,2,3
2018-12-01
Source PublicationCHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
ISSN0001-5733
Volume61Issue:12Pages:5084-5095
AbstractThe impulse response is studied using 2D finite element method because it is a basis for data interpretation of the multi-channel transient EM method (MTEM). In practice, the impulse response is obtained through eosin transformation from the results in the frequency domain, which are calculated by 2D finite element method (FEM) successfully used in the CSAMT modeling. However, the frequency band used in MTEM is wider than in CSAMT, and the modeling results at higher and lower frequencies deviate from the analytic results. We correct the differences by using far field and near field analytic formulas, and the correction results can be used in the cosin transformation to get the impulse response. In order to test the effect of the MTEM method, we design a three-layer model with a horizontal ore body limited-extending along the strata in the second layer. If one source is used, both in the frequency and time domain, the anomaly caused by the ore body cannot be distinguished clearly except for taking away the background field. However, the background is unknown in the field work; so it is not workable to be take away from the total field. We propose to use the isochronic curve or isochronic section of same offset to show the modeling results. In fact, from the two kinds of figures, not only the anomaly but also the horizontal location of the ore body can be distinguished clearly. It indicates that the MTEM method can distinguish the anomaly more clearly than the frequency method for in-layer deposits buried at some depth.
Keyword2D FEM modeling MTEM method High and low frequency correction Isochronic curve Isochronic section
DOI10.6038/cjg2018L0672
WOS KeywordTIME
Language英语
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000454466600032
PublisherSCIENCE PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/90240
Collection页岩气与地质工程院重点实验室
Corresponding AuthorWang Ruo
Affiliation1.Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
3.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China
Recommended Citation
GB/T 7714
Wang Ruo,Wang MiaoYue,Di QingYun,et al. 2D FEM modeling on the multi-channel transient electromagnetic method[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2018,61(12):5084-5095.
APA Wang Ruo,Wang MiaoYue,Di QingYun,&Xue GuoQiang.(2018).2D FEM modeling on the multi-channel transient electromagnetic method.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,61(12),5084-5095.
MLA Wang Ruo,et al."2D FEM modeling on the multi-channel transient electromagnetic method".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 61.12(2018):5084-5095.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Wang Ruo]'s Articles
[Wang MiaoYue]'s Articles
[Di QingYun]'s Articles
Baidu academic
Similar articles in Baidu academic
[Wang Ruo]'s Articles
[Wang MiaoYue]'s Articles
[Di QingYun]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Wang Ruo]'s Articles
[Wang MiaoYue]'s Articles
[Di QingYun]'s Articles
Terms of Use
No data!
Social Bookmark/Share
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit Add to Technorati
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.