Spherical wave reflection in layered media with rough interfaces: Three-dimensional modeling
dc.contributor.author
hal.structure.identifier | PINSON, Samuel
|
dc.contributor.author
hal.structure.identifier | CORDIOLI, Julio
|
dc.contributor.author
hal.structure.identifier | GUILLON, Laurent
|
dc.date.accessioned | 2016 |
dc.date.available | 2017 |
dc.date.issued | 2016 |
dc.date.submitted | 2016 |
dc.identifier.issn | 0001-4966 |
dc.identifier.uri | http://hdl.handle.net/10985/11332 |
dc.description | The authors would like to thank Derek Olson for his help on the rough surface simulation |
dc.description.abstract | 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. |
dc.description.sponsorship | This work is supported by the Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior from Brazil through the young talent funding and partially funded by Wavetech company. |
dc.language.iso | en |
dc.publisher | Acoustical Society of America |
dc.rights | Post-print |
dc.subject | Acoustic rough interface scattering |
dc.subject | Acoustic waves |
dc.subject | Interface roughness |
dc.subject | Speed of sound |
dc.subject | Transmission coefficient |
dc.title | Spherical wave reflection in layered media with rough interfaces: Three-dimensional modeling |
ensam.embargo.terms | 2017-03-01 |
dc.identifier.doi | 10.1121/1.4961000 |
dc.typdoc | Article dans une revue avec comité de lecture |
dc.localisation | Centre de Paris |
dc.subject.hal | Sciences de l'ingénieur: Acoustique |
ensam.audience | Internationale |
ensam.page | 1108-1115 |
ensam.journal | Journal of the Acoustical Society of America |
ensam.volume | 140 |
ensam.issue | 2 |
ensam.peerReviewing | Oui |
hal.identifier | hal-01397195 |
hal.version | 1 |
hal.status | accept |
dc.identifier.eissn | 1520-8524 |