Elastic modeling in 3D tilted transversely isotropic (TTI) media with convolutional perfectly matched layer (CPML) boundary conditions

Byeongho Han, Soon Jee Seol, Joongmoo Byun

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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.

Original languageEnglish
Title of host publicationSociety of Exploration Geophysicists International Exposition and 81st Annual Meeting 2011, SEG 2011
PublisherSociety of Exploration Geophysicists
Pages3037-3041
Number of pages5
ISBN (Print)9781618391841
StatePublished - 2011 Jan 1
EventSociety of Exploration Geophysicists International Exposition and 81st Annual Meeting 2011, SEG 2011 - San Antonio, United States
Duration: 2011 Sep 182011 Sep 23

Publication series

NameSociety of Exploration Geophysicists International Exposition and 81st Annual Meeting 2011, SEG 2011

Other

OtherSociety of Exploration Geophysicists International Exposition and 81st Annual Meeting 2011, SEG 2011
CountryUnited States
CitySan Antonio
Period11/09/1811/09/23

Fingerprint

perfectly matched layers
isotropic media
finite difference method
wave propagation
boundary condition
boundary conditions
absorbing boundary
elastic wave
forward modeling
modeling
S-wave
dip
anisotropy
messages
elastic waves
S waves
grids
experiment

Cite this

Han, B., Seol, S. J., & Byun, J. (2011). Elastic modeling in 3D tilted transversely isotropic (TTI) media with convolutional perfectly matched layer (CPML) boundary conditions. In Society of Exploration Geophysicists International Exposition and 81st Annual Meeting 2011, SEG 2011 (pp. 3037-3041). (Society of Exploration Geophysicists International Exposition and 81st Annual Meeting 2011, SEG 2011). Society of Exploration Geophysicists.
Han, Byeongho ; Seol, Soon Jee ; Byun, Joongmoo. / Elastic modeling in 3D tilted transversely isotropic (TTI) media with convolutional perfectly matched layer (CPML) boundary conditions. Society of Exploration Geophysicists International Exposition and 81st Annual Meeting 2011, SEG 2011. Society of Exploration Geophysicists, 2011. pp. 3037-3041 (Society of Exploration Geophysicists International Exposition and 81st Annual Meeting 2011, SEG 2011).
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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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Han, B, Seol, SJ & Byun, J 2011, Elastic modeling in 3D tilted transversely isotropic (TTI) media with convolutional perfectly matched layer (CPML) boundary conditions. in Society of Exploration Geophysicists International Exposition and 81st Annual Meeting 2011, SEG 2011. Society of Exploration Geophysicists International Exposition and 81st Annual Meeting 2011, SEG 2011, Society of Exploration Geophysicists, pp. 3037-3041, Society of Exploration Geophysicists International Exposition and 81st Annual Meeting 2011, SEG 2011, San Antonio, United States, 11/09/18.

Elastic modeling in 3D tilted transversely isotropic (TTI) media with convolutional perfectly matched layer (CPML) boundary conditions. / Han, Byeongho; Seol, Soon Jee; Byun, Joongmoo.

Society of Exploration Geophysicists International Exposition and 81st Annual Meeting 2011, SEG 2011. Society of Exploration Geophysicists, 2011. p. 3037-3041 (Society of Exploration Geophysicists International Exposition and 81st Annual Meeting 2011, SEG 2011).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Han B, Seol SJ, Byun J. Elastic modeling in 3D tilted transversely isotropic (TTI) media with convolutional perfectly matched layer (CPML) boundary conditions. In Society of Exploration Geophysicists International Exposition and 81st Annual Meeting 2011, SEG 2011. Society of Exploration Geophysicists. 2011. p. 3037-3041. (Society of Exploration Geophysicists International Exposition and 81st Annual Meeting 2011, SEG 2011).