Three-dimensional element-by-element parallel spectral-element method for seismic wave modeling
文献类型：期刊论文
| 作者 | Liu ShaoLin1,2; Yang DingHui3; Xu XiWei2; Li XiaoFan4; Shen WenHao2; Liu YouShan1 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2021-03-01 |
| 卷号 | 64期号:3页码:993-1005 |
| 关键词 | Seismic wave Spectral-element method Forward modeling PML absorbing boundary condition |
| ISSN号 | 0001-5733 |
| DOI | 10.6038/cjg2021O0405 |
| 英文摘要 | High-efficient seismic wave forward modeling is important for the investigation of seismic wave phenomenon in complex media and the imaging of subsurface structures of the Earth. In the framework of spectral-element method (SEM), we improve the computation efficiency of the previous element-by-element method and propose a new element-by-element parallel spectral-element method (EBE-SEM) for solving 3D seismic wave equation to obtain seismic wavefield. The essential idea of EBE-SEM is that the products of stiffness matrix and solution vector are operated on element level, and the products are equally distributed to each CPU processor. This strategy can greatly increase the parallelization of SEM. Because Gauss-Legendre-Lobatto integration points coincide with the interpolation points in SEM, the storage of dense element stiffness matrix can be transformed to the storage of the determinant and inversion of element Jacobian matrix, and therefore the efficiency of EBE-SEM can be further increased. To eliminate the reflected wave from truncated boundary, we solve the second-order perfectly matched layer (PML) absorbing boundary condition that is constructed at the boundary of the computational domain. The validity and efficiency of the EBE-SEM are demonstrated by two numerical examples. |
| WOS关键词 | ANALYTIC DISCRETE METHOD ; FINITE-DIFFERENCE ; SYMPLECTIC SCHEME ; LEAST-SQUARES ; PROPAGATION ; SIMULATION ; EQUATION ; TOMOGRAPHY ; TOPOGRAPHY ; EARTHQUAKE |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000626293700020 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/101008]  |
| 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 | Yang DingHui |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 2.Minist Emergency Management China, Natl Inst Nat Hazards, Beijing 100085, Peoples R China 3.Tsinghua Univ, Dept Math Sci, Beijing 100084, Peoples R China 4.China Univ Geosci, Inst Geophys & Geomat, Wuhan 430074, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu ShaoLin,Yang DingHui,Xu XiWei,et al. Three-dimensional element-by-element parallel spectral-element method for seismic wave modeling[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2021,64(3):993-1005. |
| APA | Liu ShaoLin,Yang DingHui,Xu XiWei,Li XiaoFan,Shen WenHao,&Liu YouShan.(2021).Three-dimensional element-by-element parallel spectral-element method for seismic wave modeling.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,64(3),993-1005. |
| MLA | Liu ShaoLin,et al."Three-dimensional element-by-element parallel spectral-element method for seismic wave modeling".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 64.3(2021):993-1005. |
入库方式： OAI收割
来源：地质与地球物理研究所
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