Elastic modeling in 3D Tilted Transversely Isotropic (TTI) media with Convolutional Perfectly Matched Layer (CPML) boundary conditions
- Title
- Elastic modeling in 3D Tilted Transversely Isotropic (TTI) media with Convolutional Perfectly Matched Layer (CPML) boundary conditions
- Author
- 변중무
- Keywords
- 3D; Elastic; Finite difference; Modeling; TTI
- Issue Date
- 2011-09
- Publisher
- SEGEAB
- Citation
- SEG Technical Program Expanded Abstracts, 2011, 30(1), P.3037-3041
- 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. ⓒ 2011 Society of Exploration Geophysicists.
- URI
- https://library.seg.org/doi/abs/10.1190/1.3627826
- ISSN
- 1949-4645
- DOI
- 10.1190/1.3627826
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > EARTH RESOURCES AND ENVIRONMENTAL ENGINEERING(자원환경공학과) > Articles
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