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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

文献类型：期刊论文

作者Lyu, Chao1,2,3; Zhao, Liang1; Capdeville, Yann3
刊名JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
出版日期2022-05-01
卷号127期号:5页码:28
ISSN号2169-9313
关键词hybrid wave numerical simulation representation theorem computational seismology spectral element method box tomography
DOI10.1029/2021JB022368
英文摘要We 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."
WOS关键词SPECTRAL-ELEMENT METHOD ; DOMAIN REDUCTION METHOD ; TELESEISMIC BODY WAVES ; SYNTHETIC SEISMOGRAMS ; FORM INVERSION ; LOCALIZED REGIONS ; SHEAR VELOCITY ; TOMOGRAPHY ; EARTH ; HOMOGENIZATION
资助项目National 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]
WOS研究方向Geochemistry & Geophysics
语种英语
出版者AMER GEOPHYSICAL UNION
WOS记录号WOS:000798219700001
资助机构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 ; 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
源URL[http://ir.iggcas.ac.cn/handle/132A11/105972]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者Zhao, Liang
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China
2.Univ Calif Berkeley, Dept Earth & Planetary Sci, Berkeley, CA 94720 USA
3.Univ Nantes, CNRS, Lab Planetol & Geodynam Nantes, Nantes, France
推荐引用方式
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.

入库方式： OAI收割

来源：地质与地球物理研究所

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