Modeling of subcritical penetration into sediments due to interface roughness

Citation
Ei. Thorsos et al., Modeling of subcritical penetration into sediments due to interface roughness, J ACOUST SO, 107(1), 2000, pp. 263-277
Citations number
23
Categorie Soggetti
Multidisciplinary,"Optics & Acoustics
Journal title
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
ISSN journal
00014966 → ACNP
Volume
107
Issue
1
Year of publication
2000
Pages
263 - 277
Database
ISI
SICI code
0001-4966(200001)107:1<263:MOSPIS>2.0.ZU;2-6
Abstract
Recent experimental results reveal acoustic penetration into sandy sediment s at grazing angles below the critical angle. A mechanism for this subcriti cal penetration is described based on scattering at a rough water-sediment interface. Using perturbation theory, a numerically tractable three-dimensi onal model is used for simulating experiments. The rough interface scatteri ng has been treated using formally averaged methods as well as with single rough surface realizations. Data-model comparisons show that scattering by interface roughness is a viable hypothesis for the observed subcritical pen etration. (C) 2000 Acoustical Society of America. [S0001-4966(00)02301-8].