Elastic modeling in 3D tilted transversely isotropic (TTI) media with convolutional perfectly matched layer (CPML) boundary conditions
- Authors
- Han, B.; Seol, S.J.; Byun, Joongmoo
- Issue Date
- Jan-2011
- Keywords
- 3D; Elastic; Finite difference; Modeling; TTI
- Citation
- SEG Technical Program Expanded Abstracts, v.30, no.1, pp.3037 - 3041
- Indexed
- SCOPUS
- Journal Title
- SEG Technical Program Expanded Abstracts
- Volume
- 30
- Number
- 1
- Start Page
- 3037
- End Page
- 3041
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/169226
- DOI
- 10.1190/1.3627826
- ISSN
- 1052-3812
- Abstract
- To simulate wave propagation in a tilted transversely isotropic (TTI) medium, we developed a three-dimensional (3D) elastic forward modeling algorithm with staggered-grid finite-difference method in time domain. To remove the artificial reflections efficiently at the model boundary, we derived the convolutional perfectly matched layer (CPML) absorbing boundary conditions for a TTI medium. In this paper, numerical experiments indicate that elastic wave propagation is well simulated and CPML boundary conditions efficiently remove artificial reflections in the 3D TTI medium. The S-wave split is clearly shown caused by the tilted orientation of the anisotropy which is determined by a dip and strike in 3D medium. In addition, through parallelization of the model space in z-direction with message passing interface (MPI), we can dramatically reduce the computation time and required memory.
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Collections - 서울 공과대학 > 서울 자원환경공학과 > 1. Journal Articles
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