Equivalent absorbing boundary conditions for heterogeneous acoustic media

Manuela Castro 1 Julien Diaz 2 Victor Péron 2, 3, 4
1 UFRGS - Departamento de Matemática Pura e Aplicada [Porto Alegre]
2 Magique 3D - Advanced 3D Numerical Modeling in Geophysics
LMAP - Laboratoire de Mathématiques et de leurs Applications [Pau], Inria Bordeaux - Sud-Ouest
3 UPPA - Université de Pau et des Pays de l'Adour
4 LMAP - Laboratoire de Mathématiques et de leurs Applications [Pau]
Abstract : In this work, we derive high order Equivalent Absorbing Boundary Conditions EABCs that model the propagation of waves in semi-infinite bilayered acoustic media. Our motivation is to restrict the computational domain in the simulation of seismic waves that are propagated from the earth and transmitted to the stratified heterogeneous media composed by ocean and atmosphere. These EABCs are adapted to Hagstrom-Warburton ABCs and appear as first and second order of approximation with respect to a small parameter involved in a multiscale expansion. Computational tests illustrate the accuracy of the first approximate model with respect to the small parameter.
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Conference papers
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https://hal.inria.fr/hal-01691552
Contributor : Victor Péron <>
Submitted on : Wednesday, January 24, 2018 - 10:10:20 AM
Last modification on : Monday, September 9, 2019 - 9:06:02 AM

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Manuela Castro, Julien Diaz, Victor Péron. Equivalent absorbing boundary conditions for heterogeneous acoustic media . ICOSAHOM 2016 - International Conference on Spectral and High-Order Methods, Jun 2016, Rio de Janeiro, Brazil. pp.301-310, ⟨10.1590/S2179-84512014000300007⟩. ⟨hal-01691552⟩

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