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  2. 地质与地球物理研究所
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  4. 中国科学院页岩气与地质工程重点实验室
The optimal survey area of the semi-airborne TEM method

文献类型：期刊论文

作者Ma, Zhenjun1,2,3; Di, Qingyun1,2,3; Lei, Da1,2,3; Gao, Ya1,2,3; Zhu, Jun1,2,3; Xue, Guoqiang1,3
刊名JOURNAL OF APPLIED GEOPHYSICS
出版日期2020
卷号172页码:13
关键词The semi-airborne TEM method Optimal area Fuzzy comprehensive evaluation
ISSN号0926-9851
DOI10.1016/j.jappgeo.2019.103884
英文摘要The 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.
WOS关键词GREATEM SURVEY
资助项目S&T Program of Beijing[Z181100005718001]
WOS研究方向Geology ; Mining & Mineral Processing
语种英语
WOS记录号WOS:000512481700031
出版者ELSEVIER
资助机构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 ; S&T Program of Beijing
源URL[http://ir.iggcas.ac.cn/handle/132A11/95670]  
专题地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室
通讯作者Di, Qingyun
作者单位1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China
3.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
推荐引用方式
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.

入库方式： OAI收割

来源：地质与地球物理研究所

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