The full-time apparent resistivity definition of the multi-channel transient electromagnetic method
文献类型：期刊论文
| 作者 | Wang, Xian-Xiang2; Di, Qing-Yun1; Deng, Ju-Zhi2; Li, Jin-Ping2 |
| 刊名 | COMPUTERS & GEOSCIENCES
 |
| 出版日期 | 2021-08-01 |
| 卷号 | 153页码:12 |
| 关键词 | Multi-channel transient electromagnetic The full-time apparent resistivity The impulse response |
| ISSN号 | 0098-3004 |
| DOI | 10.1016/j.cageo.2021.104770 |
| 英文摘要 | Apparent resistivity is a critical parameter for providing information about underground structures. Since the fields of the transient electromagnetic method (TEM) are an implicit function of resistivity, full-time apparent resistivity definition has always been one of the difficult issues. Besides, the definition of TEM apparent resistivity was always based on the magnetic field. However, the multi-channel transient electromagnetic method (MTEM) mainly collects electric fields, of which the apparent resistivity definition is much more difficult. In this paper, the definition of the MTEM full-time apparent resistivity is mainly investigated. First, we briefly introduces the MTEM principles. Subsequently, a detailed study on the definition of MTEM full-time apparent resistivity is carried out. The analysis of theoretical expression of the impulse response in uniform half-space shows that the electric field is a non-monotonic function of the resistivity. Although the apparent resistivity can be obtained by dividing the calculation interval into two monotonic intervals, there will be a false anomaly in the apparent resistivity curve. In searching for a better definition, we obtain the step-off response by integrating the impulse response. The step-off response is still a non-monotonic function, and there is also distortion in the apparent resistivity curve. However, the expression of step-on response is a monotonic function, and there is no false anomaly in the apparent resistivity curve. It is well known that the sum of the step-off response and the stepon response is constant at any time, and apparent resistivity of the early time is equal to the first layer resistivity. Through the above relationship, we can obtain the step-on response using the impulse response, and then calculate the apparent resistivity. The algorithm is verified through numerical simulation and field tests. |
| WOS关键词 | FREQUENCY ; TEM ; INVERSION ; CURVES |
| 资助项目 | National Natural Science Foundation of China[41964006] ; National Natural Science Foundation of China[41964003] ; National Natural Science Foundation of China[41864004] ; Jiangxi Provincial Natural Science Foundation[20202BABL201026] ; Jiangxi Provincial Natural Science Foundation[20202BAB201013] ; China Scholarship Council |
| WOS研究方向 | Computer Science ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000653661700006 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Jiangxi Provincial Natural Science Foundation ; Jiangxi Provincial Natural Science Foundation ; Jiangxi Provincial Natural Science Foundation ; Jiangxi Provincial Natural Science Foundation ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Jiangxi Provincial Natural Science Foundation ; Jiangxi Provincial Natural Science Foundation ; Jiangxi Provincial Natural Science Foundation ; Jiangxi Provincial Natural Science Foundation ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Jiangxi Provincial Natural Science Foundation ; Jiangxi Provincial Natural Science Foundation ; Jiangxi Provincial Natural Science Foundation ; Jiangxi Provincial Natural Science Foundation ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Jiangxi Provincial Natural Science Foundation ; Jiangxi Provincial Natural Science Foundation ; Jiangxi Provincial Natural Science Foundation ; Jiangxi Provincial Natural Science Foundation ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/102011]  |
| 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 | Wang, Xian-Xiang; Di, Qing-Yun |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.East China Univ Technol, Fundamental Sci Radioact Geol & Explorat Technol, Nanchang 330013, Jiangxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Xian-Xiang,Di, Qing-Yun,Deng, Ju-Zhi,et al. The full-time apparent resistivity definition of the multi-channel transient electromagnetic method[J]. COMPUTERS & GEOSCIENCES,2021,153:12. |
| APA | Wang, Xian-Xiang,Di, Qing-Yun,Deng, Ju-Zhi,&Li, Jin-Ping.(2021).The full-time apparent resistivity definition of the multi-channel transient electromagnetic method.COMPUTERS & GEOSCIENCES,153,12. |
| MLA | Wang, Xian-Xiang,et al."The full-time apparent resistivity definition of the multi-channel transient electromagnetic method".COMPUTERS & GEOSCIENCES 153(2021):12. |
入库方式： OAI收割
来源：地质与地球物理研究所
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