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The optimal survey area of the semi-airborne TEM method
Ma, Zhenjun1,2,3; Di, Qingyun1,2,3; Lei, Da1,2,3; Gao, Ya1,2,3; Zhu, Jun1,2,3; Xue, Guoqiang2,3
2020
Source PublicationJOURNAL OF APPLIED GEOPHYSICS
ISSN0926-9851
Volume172Pages:13
AbstractThe semi-airborne transient electromagnetic method (TEM) has been widely used in resource exploration and other fields due to its high efficiency, strong adaptability to the complex environment and high resolution. However, the conventional semi-airborne electromagnetic method continues to use the survey area of the grounded-wire TEM method. Compared with the existing ground-based TEM method, the semi-airborne TEM method is more sensitive to signal intensity because observed data is easily affected by noise for receiving position in the air. Therefore, it's unreasonable to consider only signal intensity or sensitivity related to offset in survey area. To obtain more suitable area, we discuss the distribution of the transient electromagnetic field with electrical source as well as the attenuation characteristics of the signal at different flight altitude through the forward modeling. Then, we obtain the sensitive area and flight altitude applied by the error analysis method in typical models. Finally, we describe a method what is herein dubbed the fuzzy comprehensive evaluation, which greatly reflects the membership degree of the evaluation object from different single factors to each level of fuzzy subset. Therefore, we use this method to get the optimal survey area and flight altitude under different noise levels. In low noise level, the signal intensity and sensitivity account for 33.3% and 66.7% respectively in selecting the optimum area and altitude, resulting in that the optimal area and flight altitude are coincides with the sensitive area and altitude better. While in the area filled with noise, the most area of strongest signal intensity is considered the optimal area and altitude. A field example shows that the aforementioned method can be well resolved in identifying survey lines and improving data quality. (C) 2019 Elsevier B.V. All rights reserved.
KeywordThe semi-airborne TEM method Optimal area Fuzzy comprehensive evaluation
DOI10.1016/j.jappgeo.2019.103884
Funding OrganizationS&T Program of Beijing ; S&T Program of Beijing ; S&T Program of Beijing ; S&T Program of Beijing ; S&T Program of Beijing ; S&T Program of Beijing ; S&T Program of Beijing ; S&T Program of Beijing ; S&T Program of Beijing ; S&T Program of Beijing ; S&T Program of Beijing ; S&T Program of Beijing ; S&T Program of Beijing ; S&T Program of Beijing ; S&T Program of Beijing ; S&T Program of Beijing
WOS KeywordGREATEM SURVEY
Language英语
Funding ProjectS&T Program of Beijing[Z181100005718001]
Funding OrganizationS&T Program of Beijing ; S&T Program of Beijing ; S&T Program of Beijing ; S&T Program of Beijing ; S&T Program of Beijing ; S&T Program of Beijing ; S&T Program of Beijing ; S&T Program of Beijing ; S&T Program of Beijing ; S&T Program of Beijing ; S&T Program of Beijing ; S&T Program of Beijing ; 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:000512481700031
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/95670
Collection页岩气与地质工程院重点实验室
Corresponding AuthorDi, Qingyun
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
First Author AffilicationKey Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences
Corresponding Author AffilicationKey Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Ma, Zhenjun,Di, Qingyun,Lei, Da,et al. The optimal survey area of the semi-airborne TEM method[J]. JOURNAL OF APPLIED GEOPHYSICS,2020,172:13.
APA Ma, Zhenjun,Di, Qingyun,Lei, Da,Gao, Ya,Zhu, Jun,&Xue, Guoqiang.(2020).The optimal survey area of the semi-airborne TEM method.JOURNAL OF APPLIED GEOPHYSICS,172,13.
MLA Ma, Zhenjun,et al."The optimal survey area of the semi-airborne TEM method".JOURNAL OF APPLIED GEOPHYSICS 172(2020):13.
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