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Practical Aspects of 2.5D Frequency-Domain Finite-Difference Modelling of Viscoelastic Waves.

Doyon, Bernard et Giroux, Bernard (2014). Practical Aspects of 2.5D Frequency-Domain Finite-Difference Modelling of Viscoelastic Waves. In: SEG Technical Program Expanded Abstracts, 26-31 octobre 2014, Denver, États-Unis.

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Résumé

2.5D modeling is appealing to speedup calculations when physical properties are invariant in one horizontal dimension. The discrete Fourier transform imposed by the 2.5D geometry implies the selection of a particular set of wavenumbers to sample the out-of-plane dimension. In this article, we derive simple criteria for the number and the spacing between the wavenumbers in order to apply the 2.5D configuration to frequency-domain modeling. To show the efficiency of the derived criteria, we use finite-difference methods to obtain full 3D wavefront for viscoelastic media.

Type de document: Document issu d'une conférence ou d'un atelier
Mots-clés libres: 3D; finite difference; wave propagation; frequency-domain; viscoelastic
Centre: Centre Eau Terre Environnement
Date de dépôt: 10 mai 2018 15:46
Dernière modification: 10 mai 2018 15:46
URI: https://espace.inrs.ca/id/eprint/3755

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