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Comparing induced polarization effect on semi-airborne and airborne transient electromagnetic data: A numerical study

Li, Hai1,2; Li, Keying1,2,3; Chen, Wen1,2,3
2022-03-01
Source PublicationJOURNAL OF APPLIED GEOPHYSICS
ISSN0926-9851
Volume198Pages:11
AbstractIn a transient electromagnetic (TEM) survey, when a chargeable body presents, its induced polarization (IP) will generate an additional electromagnetic field that further superposes on the TEM data. If the added fields are not considered properly when designing a TEM survey or inverting the TEM datasets, erroneous results may be obtained. Thus, we compare the IP effects on the airborne and semi-airborne TEM methods in this study. One big difference between the two methods is that the semi-airborne method mainly uses the ground-based galvanic source and the airborne method utilizes the air-based inductive source. To fully illustrate this difference, we calculated the IP-TEM coupled responses at a time range of 10(-6) s to 10 s. Despite the commonly known reversal of signs in the transient, we found that in some cases of airborne TEM response, the sign will reverse twice. The relative errors caused by the IP effect are further demonstrated. A minimum peak at the early time that is closely related to the IP parameters is revealed, indicating that the IP fields will drop rapidly at the early time and then decay slowly. Finally, a misfit space analysis is performed, showing that both methods can well resolve the resistivity and the IP parameters of a conductive target, while it is difficult to recover the IP parameters of a resistivity target.
KeywordTransient electromagnetic method Induced polarization Semi-airborne Airborne Misfit space Resolution
DOI10.1016/j.jappgeo.2022.104556
Funding OrganizationNatural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; IGGCAS Research Start-up Funds ; IGGCAS Research Start-up Funds ; IGGCAS Research Start-up Funds ; IGGCAS Research Start-up Funds ; S&T Program of Beijing ; S&T Program of Beijing ; S&T Program of Beijing ; S&T Program of Beijing ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; IGGCAS Research Start-up Funds ; IGGCAS Research Start-up Funds ; IGGCAS Research Start-up Funds ; IGGCAS Research Start-up Funds ; S&T Program of Beijing ; S&T Program of Beijing ; S&T Program of Beijing ; S&T Program of Beijing ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; IGGCAS Research Start-up Funds ; IGGCAS Research Start-up Funds ; IGGCAS Research Start-up Funds ; IGGCAS Research Start-up Funds ; S&T Program of Beijing ; S&T Program of Beijing ; S&T Program of Beijing ; S&T Program of Beijing ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; IGGCAS Research Start-up Funds ; IGGCAS Research Start-up Funds ; IGGCAS Research Start-up Funds ; IGGCAS Research Start-up Funds ; S&T Program of Beijing ; S&T Program of Beijing ; S&T Program of Beijing ; S&T Program of Beijing
WOS KeywordINVERSION ; SYSTEMS ; RESPONSES
Language英语
Funding ProjectNatural Science Foundation of China[41804074] ; IGGCAS Research Start-up Funds[E0515402] ; S&T Program of Beijing[Z181100005718001]
Funding OrganizationNatural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; IGGCAS Research Start-up Funds ; IGGCAS Research Start-up Funds ; IGGCAS Research Start-up Funds ; IGGCAS Research Start-up Funds ; S&T Program of Beijing ; S&T Program of Beijing ; S&T Program of Beijing ; S&T Program of Beijing ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; IGGCAS Research Start-up Funds ; IGGCAS Research Start-up Funds ; IGGCAS Research Start-up Funds ; IGGCAS Research Start-up Funds ; S&T Program of Beijing ; S&T Program of Beijing ; S&T Program of Beijing ; S&T Program of Beijing ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; IGGCAS Research Start-up Funds ; IGGCAS Research Start-up Funds ; IGGCAS Research Start-up Funds ; IGGCAS Research Start-up Funds ; S&T Program of Beijing ; S&T Program of Beijing ; S&T Program of Beijing ; S&T Program of Beijing ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; IGGCAS Research Start-up Funds ; IGGCAS Research Start-up Funds ; IGGCAS Research Start-up Funds ; IGGCAS Research Start-up Funds ; S&T Program of Beijing ; S&T Program of Beijing ; S&T Program of Beijing ; S&T Program of Beijing
WOS Research AreaGeology ; Mining & Mineral Processing
WOS SubjectGeosciences, Multidisciplinary ; Mining & Mineral Processing
WOS IDWOS:000788111000003
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/105150
Collection矿产资源研究院重点实验室
Corresponding AuthorChen, Wen
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100029, Peoples R China
First Author AffilicationKey Laboratory of Mineral Resources, Chinese Academy of Sciences
Corresponding Author AffilicationKey Laboratory of Mineral Resources, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Li, Hai,Li, Keying,Chen, Wen.

Comparing induced polarization effect on semi-airborne and airborne transient electromagnetic data: A numerical study

[J]. JOURNAL OF APPLIED GEOPHYSICS,2022,198:11.
APA Li, Hai,Li, Keying,&Chen, Wen.(2022).

Comparing induced polarization effect on semi-airborne and airborne transient electromagnetic data: A numerical study

.JOURNAL OF APPLIED GEOPHYSICS,198,11.
MLA Li, Hai,et al."

Comparing induced polarization effect on semi-airborne and airborne transient electromagnetic data: A numerical study

".JOURNAL OF APPLIED GEOPHYSICS 198(2022):11.
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