Three-dimensional modeling of controlled-source audio-frequency magnetotellurics. using the finite element method on an unstructured grid
文献类型：期刊论文
| 作者 | Wang Ya-Lu1,2; Di Qing-Yun1; Wang Ruo1 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2017-03-01 |
| 卷号 | 60期号:3页码:1158-1167 |
| ISSN号 | 0001-5733 |
| 关键词 | Csamt Method Finite Element Method Three Dimension Unstructured Mesh Numerical Modeling |
| DOI | 10.6038/cjg20170326 |
| 文献子类 | Article |
| 英文摘要 | Considering both the transmitter-configuration and the complicated characteristics of subsurface media in the controlled-source audio-frequency magnetotellurics survey, a threedimensional finite element modeling method based on an unstructured grid is developed. We solve the secondary field problem to avoid singularity near the source and reduce the computation domain. The governing equations for the secondary electric field are deduced firstly. By incorporating the divergence-free condition, our solution for the electric field is guaranteed to be numerically accurate and physically reasonable. The secondary magnetic field value of high precision is then obtained by Gaussian weighted technique from the electric field. The liability of our algorithm is verified by a comparative study with the IE (Integral Equation) method. Thereafter the electromagnetic responses of some canonical models are simulated and analyzed. The results show that the algorithm is correct and reliable, and suitable for the numerical simulation of 3D geological models. |
| WOS关键词 | MESH GENERATION ; THERMAL AREA ; SIMULATION ; EQUATIONS ; INVERSION ; RESPONSES ; EXAMPLE |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| 出版者 | SCIENCE PRESS |
| WOS记录号 | WOS:000396386700026 |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/53011]  |
| 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 Qing-Yun |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang Ya-Lu,Di Qing-Yun,Wang Ruo. Three-dimensional modeling of controlled-source audio-frequency magnetotellurics. using the finite element method on an unstructured grid[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2017,60(3):1158-1167. |
| APA | Wang Ya-Lu,Di Qing-Yun,&Wang Ruo.(2017).Three-dimensional modeling of controlled-source audio-frequency magnetotellurics. using the finite element method on an unstructured grid.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,60(3),1158-1167. |
| MLA | Wang Ya-Lu,et al."Three-dimensional modeling of controlled-source audio-frequency magnetotellurics. using the finite element method on an unstructured grid".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 60.3(2017):1158-1167. |
入库方式： OAI收割
来源：地质与地球物理研究所
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