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Novel Hybrid Numerical Simulation of the Wave Equation by Combining Physical and Numerical Representation Theorems and a Review of Hybrid Methodologies
Lyu, Chao1,2,3; Zhao, Liang1; Capdeville, Yann2
2022-05-01
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
ISSN2169-9313
Volume127Issue:5Pages:28
AbstractWe present a novel hybrid method to simulate wave propagation through remote regional models. By reviewing and refining the two main existing hybrid categories, the multiple point sources method and direct discrete differentiation method, containing five distinct subcategories, the proposed hybrid method has the following three advantages. (a) The meshing of the local target model is completely independent of that of the global reference model. (b) Only three physical quantities, that is, the gradient backward difference q, potential q, and second temporal derivative of the potential partial differential (tt)q for the acoustic wave equation (traction, displacement, and acceleration for the elastic scenario) are required to construct the hybrid inputs during the first global simulation. They are located exactly on the two-dimensional (2D) hybrid interface, which is highly accurate and memory efficient for three-dimensional (3D) hybrid numerical simulations. The required memory of hybrid inputs can be reduced fourfold if the very high polynomial degree spectral element method (SEM) is used for the 3D local hybrid simulation. (c) An efficient artificial perfectly matched layer (PML) can be adopted naturally without any elements overlapping between the local and PML domains in the second hybrid simulation. We build on theoretical analysis and 2D/3D numerical forward simulations based on the SEM to illustrate this new hybrid method and demonstrate its validity. The proposed hybrid method is promising for efficiently probing key 3D structures anywhere within the Earth using the so-called "box tomography."
Keywordhybrid wave numerical simulation representation theorem computational seismology spectral element method box tomography
DOI10.1029/2021JB022368
Funding OrganizationNational Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; French National Research Agency ; French National Research Agency ; French National Research Agency ; French National Research Agency ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; French National Research Agency ; French National Research Agency ; French National Research Agency ; French National Research Agency ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; French National Research Agency ; French National Research Agency ; French National Research Agency ; French National Research Agency ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; French National Research Agency ; French National Research Agency ; French National Research Agency ; French National Research Agency
WOS KeywordSPECTRAL-ELEMENT METHOD ; DOMAIN REDUCTION METHOD ; TELESEISMIC BODY WAVES ; SYNTHETIC SEISMOGRAMS ; FORM INVERSION ; LOCALIZED REGIONS ; SHEAR VELOCITY ; TOMOGRAPHY ; EARTH ; HOMOGENIZATION
Language英语
Funding ProjectNational Nature Science Foundation of China[41625016] ; National Nature Science Foundation of China[41888101] ; National Nature Science Foundation of China[42004045] ; China Scholarship Council[201804910289] ; French National Research Agency[ANR-16-CE31-0022-01]
Funding OrganizationNational Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; French National Research Agency ; French National Research Agency ; French National Research Agency ; French National Research Agency ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; French National Research Agency ; French National Research Agency ; French National Research Agency ; French National Research Agency ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; French National Research Agency ; French National Research Agency ; French National Research Agency ; French National Research Agency ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; French National Research Agency ; French National Research Agency ; French National Research Agency ; French National Research Agency
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000798219700001
PublisherAMER GEOPHYSICAL UNION
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/105972
Collection岩石圈演化国家重点实验室
Corresponding AuthorZhao, Liang
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China
2.Univ Nantes, CNRS, Lab Planetol & Geodynam Nantes, Nantes, France
3.Univ Calif Berkeley, Dept Earth & Planetary Sci, Berkeley, CA 94720 USA
First Author AffilicationInstitute of Geology and Geophysics, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Geology and Geophysics, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Lyu, Chao,Zhao, Liang,Capdeville, Yann. Novel Hybrid Numerical Simulation of the Wave Equation by Combining Physical and Numerical Representation Theorems and a Review of Hybrid Methodologies[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,2022,127(5):28.
APA Lyu, Chao,Zhao, Liang,&Capdeville, Yann.(2022).Novel Hybrid Numerical Simulation of the Wave Equation by Combining Physical and Numerical Representation Theorems and a Review of Hybrid Methodologies.JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,127(5),28.
MLA Lyu, Chao,et al."Novel Hybrid Numerical Simulation of the Wave Equation by Combining Physical and Numerical Representation Theorems and a Review of Hybrid Methodologies".JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH 127.5(2022):28.
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