Modeling of subcritical penetration into sediments due to interface roughness
Recent experimental results reveal acoustic penetration into sandy sediments at grazing angles below the critical angle. We have been investigating a mechanism for subcritical penetration based on scattering at a rough water-sediment interface. Using perturbation theory, a numerically tractable three-dimensional model has been developed for simulating experiments. Data-model comparisons show that interface roughness is a viable 11)pothesis for the observed subcritical penetration.
SourceIn: High Frequency Seafloor Acoustics (SACLANTCEN Conference Proceedings CP-45), 1997, pp. 563-570
Thorsos, Eric I.;
Jackson, Darrell R.;
Moe, John E.;
Wiliams, Kevin L.