A topography-dependent eikonal solver for accurate and efficient computation of traveltimes and their derivatives in 3D heterogeneous media
文献类型：期刊论文
| 作者 | Zhou, Xiaole3,4; Lan, Haiqiang3,4; Chen, Ling3,4,5; Guo, Gaoshan3,4; Bin Waheed, Umair1; Badal, Jose2 |
| 刊名 | GEOPHYSICS
 |
| 出版日期 | 2023-03-01 |
| 卷号 | 88期号:2页码:U17-U29 |
| ISSN号 | 0016-8033 |
| DOI | 10.1190/GEO2021-0799.1 |
| 英文摘要 | Accurate and efficient computation of traveltimes and their spa-tial derivatives for 3D heterogeneous media is essential in many areas of seismology, such as traveltime/slope tomography and quantitative migration. A popular method of obtaining this infor-mation is to solve the eikonal equation using a finite-difference (FD) scheme. However, the complex surface of the earth causes numerical complications when applying FD methods based on rectangular grids. To overcome the challenge of taking into ac-count topographic effects, we make use of the 3D topography -dependent eikonal equation (TDEE) which is a 3D surface -flattening scheme that uses curvilinear grids to transform irregular surfaces in the physical domain into regular surfaces in the computational domain. Unfortunately, solving the TDEE in three dimensions starting from the initial point-source condition needs to get around the point-source singularity. Therefore, we formulate the 3D factored TDEE (FTDEE) according to a factorization prin-ciple. Furthermore, to numerically solve the 3D original TDEE, as well as the FTDEE, we apply a lock sweeping method, which avoids the problem of repetitive computation when using the fast sweeping method. Several numerical examples demonstrate the efficiency of the new lock scheme in terms of computation time and accuracy of the 3D FTDEE solver for the calculation of trav-eltimes and their derivatives. This scheme provides a good choice for the calculation of traveltimes and their spatial derivatives using models with irregular surfaces, which means greater potential for seismic data processing under conditions of complex topography. |
| WOS关键词 | FAST SWEEPING METHODS ; TOMOGRAPHY ; EQUATION ; REFLECTION ; REFRACTION ; PHASES ; SCHEME |
| 资助项目 | National Natural Science Foundation of China[42022028] ; Open Fund Project State Key Laboratory of Lithospheric Evolution[SKL-YT201802] ; Strategic Priority Research Program[XDA20070302] ; China Scholarship Council |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000983178800002 |
| 出版者 | SOC EXPLORATION GEOPHYSICISTS - SEG |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Open Fund Project State Key Laboratory of Lithospheric Evolution ; Open Fund Project State Key Laboratory of Lithospheric Evolution ; Open Fund Project State Key Laboratory of Lithospheric Evolution ; Open Fund Project State Key Laboratory of Lithospheric Evolution ; Strategic Priority Research Program ; Strategic Priority Research Program ; Strategic Priority Research Program ; Strategic Priority Research Program ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Open Fund Project State Key Laboratory of Lithospheric Evolution ; Open Fund Project State Key Laboratory of Lithospheric Evolution ; Open Fund Project State Key Laboratory of Lithospheric Evolution ; Open Fund Project State Key Laboratory of Lithospheric Evolution ; Strategic Priority Research Program ; Strategic Priority Research Program ; Strategic Priority Research Program ; Strategic Priority Research Program ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Open Fund Project State Key Laboratory of Lithospheric Evolution ; Open Fund Project State Key Laboratory of Lithospheric Evolution ; Open Fund Project State Key Laboratory of Lithospheric Evolution ; Open Fund Project State Key Laboratory of Lithospheric Evolution ; Strategic Priority Research Program ; Strategic Priority Research Program ; Strategic Priority Research Program ; Strategic Priority Research Program ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Open Fund Project State Key Laboratory of Lithospheric Evolution ; Open Fund Project State Key Laboratory of Lithospheric Evolution ; Open Fund Project State Key Laboratory of Lithospheric Evolution ; Open Fund Project State Key Laboratory of Lithospheric Evolution ; Strategic Priority Research Program ; Strategic Priority Research Program ; Strategic Priority Research Program ; Strategic Priority Research Program ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/110901]  |
| 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 | Lan, Haiqiang |
| 作者单位 | 1.King Fahd Univ Petr & Minerals, Coll Petr Engn & Geosci, Dhahran, Saudi Arabia 2.Univ Zaragoza, Phys Earth, Sci B, Zaragoza, Spain 3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China 4.Univ Chinese Acad Sci, Beijing, Peoples R China 5.CAS Ctr Excellence Deep Earth Sci, Guangzhou, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Xiaole,Lan, Haiqiang,Chen, Ling,et al. A topography-dependent eikonal solver for accurate and efficient computation of traveltimes and their derivatives in 3D heterogeneous media[J]. GEOPHYSICS,2023,88(2):U17-U29. |
| APA | Zhou, Xiaole,Lan, Haiqiang,Chen, Ling,Guo, Gaoshan,Bin Waheed, Umair,&Badal, Jose.(2023).A topography-dependent eikonal solver for accurate and efficient computation of traveltimes and their derivatives in 3D heterogeneous media.GEOPHYSICS,88(2),U17-U29. |
| MLA | Zhou, Xiaole,et al."A topography-dependent eikonal solver for accurate and efficient computation of traveltimes and their derivatives in 3D heterogeneous media".GEOPHYSICS 88.2(2023):U17-U29. |
入库方式： OAI收割
来源：地质与地球物理研究所
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