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The application of a novel perfectly matched layer in magnetotelluric simulations
Lei, Da1,2,3; Yang, Liangyong3; Fu, Changmin1,2,3; Wang, Ruo1,2,3; Wang, Zhongxing1,2,3
2022-05-01
Source PublicationGEOPHYSICS
ISSN0016-8033
Volume87Issue:3Pages:E163-E175
AbstractTruncation 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.
DOI10.1190/GEO2020-0393.1
Funding OrganizationScientific 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
WOS KeywordCFS-PML ; WAVE ; FDTD ; ABSORPTION ; PERFORMANCE ; ABSORBER ; UNSPLIT ; FIELDS ; LOSSY
Language英语
Funding ProjectScientific Instrument Developing Project of the Chinese Academy of Sciences[ZDZBGCH2018006]
Funding OrganizationScientific 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
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000793468500003
PublisherSOC EXPLORATION GEOPHYSICISTS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/105901
Collection深部资源探测先导技术与装备研发中心
Corresponding AuthorYang, Liangyong
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, CAS Engn Lab Deep Resources Equipment & Technol, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
First Author AffilicationInstitute of Geology and Geophysics, Chinese Academy of Sciences
Recommended Citation
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.
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