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A hybrid method for calculating seismic wave first-arrival traveltimes in two-dimensional models with an irregular surface

文献类型：期刊论文

作者Lan, Haiqiang1,2; Chen, Ling1,2,3; Badal, Jose4
刊名JOURNAL OF APPLIED GEOPHYSICS
出版日期2018-08-01
卷号155页码:70-77
关键词traveltimes classical eikonal equation topography-dependent eikonal equation hybrid method fast sweeping method solver
ISSN号0926-9851
DOI10.1016/j.jappgeo.2018.05.011
文献子类Article
英文摘要A hybrid method is developed for the calculation of seismic wave first-arrival traveltimes in two-dimensional models with an irregular free surface. The method is based on a combination of the classical eikonal equation (CEE) and the topography-dependent eikonal equation (TDEE); the latter applies only to the part of the explored domain that includes the non-flat surface, while the first equation applies anywhere outside this domain. CEE is solved using a fast-sweeping method, and TDEE is solved after discretizing the numerical Hamiltonian using the Legendre transform and applying the upwind fast-sweeping method. For the implementation of the hybrid method and the appropriate application of CEE and TDEE, we sort the contact mode between spatial sub-domains into three types and give an explanation about the working routine adopted for each one. Several numerical experiments considering different models, mesh sizes, seismic source positions and partition styles demonstrate that the proposed hybrid method can effectively address seismic modeling problems involving undulated free surfaces, keeping the same precision as TDEE but with a fairly rapid convergence. This proves that the hybrid method is a powerful tool for practical applications aimed at obtaining high-quality images of earth structures. (C) 2018 Elsevier B.V. All rights reserved.
WOS关键词HAMILTON-JACOBI EQUATIONS ; FAST MARCHING METHOD ; FINITE-DIFFERENCE CALCULATION ; DEPENDENT EIKONAL EQUATION ; FAST SWEEPING METHODS ; P-WAVE ; VELOCITY STRUCTURE ; STATIC CORRECTIONS ; LAYERED MEDIA ; COMPLEX 2D
WOS研究方向Geology ; Mining & Mineral Processing
语种英语
WOS记录号WOS:000440116100007
出版者ELSEVIER SCIENCE BV
资助机构National Natural Science Foundation of China(41688103 ; National Natural Science Foundation of China(41688103 ; National Natural Science Foundation of China(41688103 ; National Natural Science Foundation of China(41688103 ; Chinese Academy of Sciences(2015051) ; Chinese Academy of Sciences(2015051) ; Chinese Academy of Sciences(2015051) ; Chinese Academy of Sciences(2015051) ; State Key Laboratory of Lithospheric Evolution(SKL-Z201704-11712180) ; State Key Laboratory of Lithospheric Evolution(SKL-Z201704-11712180) ; State Key Laboratory of Lithospheric Evolution(SKL-Z201704-11712180) ; State Key Laboratory of Lithospheric Evolution(SKL-Z201704-11712180) ; 41674095 ; 41674095 ; 41674095 ; 41674095 ; 41604076) ; 41604076) ; 41604076) ; 41604076) ; National Natural Science Foundation of China(41688103 ; National Natural Science Foundation of China(41688103 ; National Natural Science Foundation of China(41688103 ; National Natural Science Foundation of China(41688103 ; Chinese Academy of Sciences(2015051) ; Chinese Academy of Sciences(2015051) ; Chinese Academy of Sciences(2015051) ; Chinese Academy of Sciences(2015051) ; State Key Laboratory of Lithospheric Evolution(SKL-Z201704-11712180) ; State Key Laboratory of Lithospheric Evolution(SKL-Z201704-11712180) ; State Key Laboratory of Lithospheric Evolution(SKL-Z201704-11712180) ; State Key Laboratory of Lithospheric Evolution(SKL-Z201704-11712180) ; 41674095 ; 41674095 ; 41674095 ; 41674095 ; 41604076) ; 41604076) ; 41604076) ; 41604076) ; National Natural Science Foundation of China(41688103 ; National Natural Science Foundation of China(41688103 ; National Natural Science Foundation of China(41688103 ; National Natural Science Foundation of China(41688103 ; Chinese Academy of Sciences(2015051) ; Chinese Academy of Sciences(2015051) ; Chinese Academy of Sciences(2015051) ; Chinese Academy of Sciences(2015051) ; State Key Laboratory of Lithospheric Evolution(SKL-Z201704-11712180) ; State Key Laboratory of Lithospheric Evolution(SKL-Z201704-11712180) ; State Key Laboratory of Lithospheric Evolution(SKL-Z201704-11712180) ; State Key Laboratory of Lithospheric Evolution(SKL-Z201704-11712180) ; 41674095 ; 41674095 ; 41674095 ; 41674095 ; 41604076) ; 41604076) ; 41604076) ; 41604076) ; National Natural Science Foundation of China(41688103 ; National Natural Science Foundation of China(41688103 ; National Natural Science Foundation of China(41688103 ; National Natural Science Foundation of China(41688103 ; Chinese Academy of Sciences(2015051) ; Chinese Academy of Sciences(2015051) ; Chinese Academy of Sciences(2015051) ; Chinese Academy of Sciences(2015051) ; State Key Laboratory of Lithospheric Evolution(SKL-Z201704-11712180) ; State Key Laboratory of Lithospheric Evolution(SKL-Z201704-11712180) ; State Key Laboratory of Lithospheric Evolution(SKL-Z201704-11712180) ; State Key Laboratory of Lithospheric Evolution(SKL-Z201704-11712180) ; 41674095 ; 41674095 ; 41674095 ; 41674095 ; 41604076) ; 41604076) ; 41604076) ; 41604076)
源URL[http://ir.iggcas.ac.cn/handle/132A11/88148]  
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.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
4.Univ Zaragoza, Phys Earth Sci B, Pedro Cerbuna 12, E-50009 Zaragoza, Spain
推荐引用方式
GB/T 7714		 Lan, Haiqiang,Chen, Ling,Badal, Jose. A hybrid method for calculating seismic wave first-arrival traveltimes in two-dimensional models with an irregular surface[J]. JOURNAL OF APPLIED GEOPHYSICS,2018,155:70-77.
APA Lan, Haiqiang,Chen, Ling,&Badal, Jose.(2018).A hybrid method for calculating seismic wave first-arrival traveltimes in two-dimensional models with an irregular surface.JOURNAL OF APPLIED GEOPHYSICS,155,70-77.
MLA Lan, Haiqiang,et al."A hybrid method for calculating seismic wave first-arrival traveltimes in two-dimensional models with an irregular surface".JOURNAL OF APPLIED GEOPHYSICS 155(2018):70-77.

入库方式： OAI收割

来源：地质与地球物理研究所

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