PINSON, Samuel; CORDIOLI, Julio; GUILLON, Laurent

doi:10.1121/1.4961000

Métadonnées

Afficher la notice complète

Licence d’utilisation du document

PINSON, Samuel
Universidade Federal de Santa Catarina = Federal University of Santa Catarina [Florianópolis] [UFSC]

CORDIOLI, Julio
Universidade Federal de Santa Catarina = Federal University of Santa Catarina [Florianópolis] [UFSC]

GUILLON, Laurent
Institut de Recherche de l'Ecole Navale [IRENAV]

Langue

Article de revue

Ce document a été publié dans

Journal of the Acoustical Society of America. 2016, vol. 140, n° 2, p. 1108-1115

Acoustical Society of America

Résumé en anglais

In the context of sediment characterization, layer interface roughnesses may be responsible for sound-speed profile measurement uncertainties. To study the roughness influence, a three-dimensional (3D) modeling of a layered seafloor with rough interfaces is necessary. Although roughness scattering has an abundant literature, 3D modeling of spherical wave reflection on rough interfaces is generally limited to a single interface (using Kirchhoff-Helmholtz integral) or computationally expensive techniques (finite difference or finite element method). In this work, it is demonstrated that the wave reflection over a layered medium with irregular interfaces can be modeled as a sum of integrals over each interface. The main approximations of the method are the tangent-plane approximation, the Born approximation (multiple reflection between interfaces are neglected) and flat-interface approximation for the transmitted waves into the sediment. The integration over layer interfaces results in a method with reasonable computation cost.< Réduire

Mots clés en anglais

Acoustic rough interface scattering

Acoustic waves

Interface roughness

Speed of sound

Transmission coefficient

Métadonnées

Partager cette publication !

Licence d’utilisation du document

Spherical wave reflection in layered media with rough interfaces: Three-dimensional modeling

Langue

Ce document a été publié dans

Résumé en anglais

Mots clés en anglais

URI

DOI

Origine

Unités de recherche