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An upwind fast sweeping scheme for calculating seismic wave first-arrival travel times for models with an irregular free surface

文献类型：期刊论文

作者Lan, Haiqiang1; Chen, Ling2,3
刊名GEOPHYSICAL PROSPECTING
出版日期2018-02-01
卷号66期号:2页码:327-341
关键词Topography-dependent eikonal equation Travel time Lax-Friedrichs sweeping algorithm Upwind fast sweeping method
ISSN号0016-8025
DOI10.1111/1365-2478.12513
文献子类Article
英文摘要The topography-dependent eikonal equation formulated in a curvilinear coordinate system has recently been established and revealed as being effective in calculating first-arrival travel times of seismic waves in an Earth model with an irregular free surface. The Lax-Friedrichs sweeping scheme, widely used in previous studies as for approximating the topography-dependent eikonal equation viscosity solutions, is more dissipative and needs a much higher number of iterations to converge. Furthermore, the required number of iterations grows with the grid refinement and results in heavy computation in dense grids, which hampers the application of the Lax-Friedrichs sweeping scheme to seismic wave travel-time calculation and high-resolution imaging. In this paper, we introduce a new upwind fast sweeping solver by discretising the Legendre transform of the numerical Hamiltonian of the topography-dependent eikonal equation using an explicit formula. The minimisation related to the Legendre transform in the sweeping scheme is solved analytically, which proved to be much more efficient than the Lax-Friedrichs algorithm in solving the topography-dependent eikonal equation. Several numerical experiments demonstrate that the new upwind fast sweeping method converges and achieves much better accuracy after a finite number of iterations, independently of the mesh size, which makes it an efficient and robust tool for calculating travel times in the presence of a non-flat free surface.
WOS关键词HAMILTON-JACOBI EQUATIONS ; FAST MARCHING METHOD ; DEPENDENT EIKONAL EQUATION ; FINITE-DIFFERENCE SOLUTION ; ANISOTROPIC MEDIA ; EARTHQUAKE LOCATION ; STATIC CORRECTIONS ; FIELD SIMULATION ; COMPLEX 2D ; TOPOGRAPHY
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000425825300005
出版者WILEY
资助机构National Natural Science Foundation of China(41404073 ; National Natural Science Foundation of China(41404073 ; National Natural Science Foundation of China(41404073 ; National Natural Science Foundation of China(41404073 ; Youth Innovation Promotion Association of CAS(2015051) ; Youth Innovation Promotion Association of CAS(2015051) ; Youth Innovation Promotion Association of CAS(2015051) ; Youth Innovation Promotion Association of CAS(2015051) ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; 41225016 ; 41225016 ; 41225016 ; 41225016 ; 41674095 ; 41674095 ; 41674095 ; 41674095 ; 41404050 ; 41404050 ; 41404050 ; 41404050 ; 41476033) ; 41476033) ; 41476033) ; 41476033) ; National Natural Science Foundation of China(41404073 ; National Natural Science Foundation of China(41404073 ; National Natural Science Foundation of China(41404073 ; National Natural Science Foundation of China(41404073 ; Youth Innovation Promotion Association of CAS(2015051) ; Youth Innovation Promotion Association of CAS(2015051) ; Youth Innovation Promotion Association of CAS(2015051) ; Youth Innovation Promotion Association of CAS(2015051) ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; 41225016 ; 41225016 ; 41225016 ; 41225016 ; 41674095 ; 41674095 ; 41674095 ; 41674095 ; 41404050 ; 41404050 ; 41404050 ; 41404050 ; 41476033) ; 41476033) ; 41476033) ; 41476033) ; National Natural Science Foundation of China(41404073 ; National Natural Science Foundation of China(41404073 ; National Natural Science Foundation of China(41404073 ; National Natural Science Foundation of China(41404073 ; Youth Innovation Promotion Association of CAS(2015051) ; Youth Innovation Promotion Association of CAS(2015051) ; Youth Innovation Promotion Association of CAS(2015051) ; Youth Innovation Promotion Association of CAS(2015051) ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; 41225016 ; 41225016 ; 41225016 ; 41225016 ; 41674095 ; 41674095 ; 41674095 ; 41674095 ; 41404050 ; 41404050 ; 41404050 ; 41404050 ; 41476033) ; 41476033) ; 41476033) ; 41476033) ; National Natural Science Foundation of China(41404073 ; National Natural Science Foundation of China(41404073 ; National Natural Science Foundation of China(41404073 ; National Natural Science Foundation of China(41404073 ; Youth Innovation Promotion Association of CAS(2015051) ; Youth Innovation Promotion Association of CAS(2015051) ; Youth Innovation Promotion Association of CAS(2015051) ; Youth Innovation Promotion Association of CAS(2015051) ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; 41225016 ; 41225016 ; 41225016 ; 41225016 ; 41674095 ; 41674095 ; 41674095 ; 41674095 ; 41404050 ; 41404050 ; 41404050 ; 41404050 ; 41476033) ; 41476033) ; 41476033) ; 41476033)
源URL[http://ir.iggcas.ac.cn/handle/132A11/82687]  
专题中国科学院地质与地球物理研究所
通讯作者Lan, Haiqiang
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
3.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
推荐引用方式
GB/T 7714		 Lan, Haiqiang,Chen, Ling. An upwind fast sweeping scheme for calculating seismic wave first-arrival travel times for models with an irregular free surface[J]. GEOPHYSICAL PROSPECTING,2018,66(2):327-341.
APA Lan, Haiqiang,&Chen, Ling.(2018).An upwind fast sweeping scheme for calculating seismic wave first-arrival travel times for models with an irregular free surface.GEOPHYSICAL PROSPECTING,66(2),327-341.
MLA Lan, Haiqiang,et al."An upwind fast sweeping scheme for calculating seismic wave first-arrival travel times for models with an irregular free surface".GEOPHYSICAL PROSPECTING 66.2(2018):327-341.

入库方式： OAI收割

来源：地质与地球物理研究所

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