The application of a novel perfectly matched layer in magnetotelluric simulations
文献类型：期刊论文
| 作者 | Lei, Da1,2,3; Yang, Liangyong1; Fu, Changmin1,2,3; Wang, Ruo1,2,3; Wang, Zhongxing1,2,3 |
| 刊名 | GEOPHYSICS
 |
| 出版日期 | 2022-05-01 |
| 卷号 | 87期号:3页码:E163-E175 |
| ISSN号 | 0016-8033 |
| DOI | 10.1190/GEO2020-0393.1 |
| 英文摘要 | Truncation boundaries are needed when simulating a region in magnetotelluric (MT) modeling. As an efficient alternative truncation boundary, perfectly matched layers (PMLs) have been widely applied in many high-frequency wavefield simulations. However, the governing equation of most electromagnetic exploration methods is for the diffusion field, in which the conduction current is significantly greater than the displacement current. Because the wave and diffusion fields have completely different relations for the frequency and constitutive parameters, conventional PMLs, which are mainly designed for the wavefield, are not a good choice for the diffusion field. For this reason, we propose a formula for a PML that covers the entire frequency band, including the wave and the diffusion fields. It is based on a uniaxial PML. Moreover, we derive a simplified form for the diffusion field. To check the feasibility and application potential of the proposed formula for a PML in MT simulations, we have implemented PMLs using a finite-element method and compared our results with those for a conventional long-distance extended grid. The results of the 1D simulation demonstrate that PMLs can achieve high accuracy and stable performance and have a broad application range. In 2D and 3D models, the air layer is an obstacle in the application of a PML. By selecting appropriate parameters for the PML, 2D and 3D models can achieve satisfactory performance. Therefore, the proposed PML is useful for MT simulations and can achieve satisfactory truncation performance. |
| WOS关键词 | CFS-PML ; WAVE ; FDTD ; ABSORPTION ; PERFORMANCE ; ABSORBER ; UNSPLIT ; FIELDS ; LOSSY |
| 资助项目 | Scientific Instrument Developing Project of the Chinese Academy of Sciences[ZDZBGCH2018006] |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000793468500003 |
| 出版者 | SOC EXPLORATION GEOPHYSICISTS |
| 资助机构 | Scientific Instrument Developing Project of the Chinese Academy of Sciences ; Scientific Instrument Developing Project of the Chinese Academy of Sciences ; Scientific Instrument Developing Project of the Chinese Academy of Sciences ; Scientific Instrument Developing Project of the Chinese Academy of Sciences ; Scientific Instrument Developing Project of the Chinese Academy of Sciences ; Scientific Instrument Developing Project of the Chinese Academy of Sciences ; Scientific Instrument Developing Project of the Chinese Academy of Sciences ; Scientific Instrument Developing Project of the Chinese Academy of Sciences ; Scientific Instrument Developing Project of the Chinese Academy of Sciences ; Scientific Instrument Developing Project of the Chinese Academy of Sciences ; Scientific Instrument Developing Project of the Chinese Academy of Sciences ; Scientific Instrument Developing Project of the Chinese Academy of Sciences ; Scientific Instrument Developing Project of the Chinese Academy of Sciences ; Scientific Instrument Developing Project of the Chinese Academy of Sciences ; Scientific Instrument Developing Project of the Chinese Academy of Sciences ; Scientific Instrument Developing Project of the Chinese Academy of Sciences |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/105901]  |
| 专题 | 地质与地球物理研究所_深部资源勘探装备研发 |
| 通讯作者 | Yang, Liangyong |
| 作者单位 | 1.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, CAS Engn Lab Deep Resources Equipment & Technol, 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 | Lei, Da,Yang, Liangyong,Fu, Changmin,et al. The application of a novel perfectly matched layer in magnetotelluric simulations[J]. GEOPHYSICS,2022,87(3):E163-E175. |
| APA | Lei, Da,Yang, Liangyong,Fu, Changmin,Wang, Ruo,&Wang, Zhongxing.(2022).The application of a novel perfectly matched layer in magnetotelluric simulations.GEOPHYSICS,87(3),E163-E175. |
| MLA | Lei, Da,et al."The application of a novel perfectly matched layer in magnetotelluric simulations".GEOPHYSICS 87.3(2022):E163-E175. |
入库方式： OAI收割
来源：地质与地球物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。