Environmental Models

OASES supports all environmental models available in SAFARI, i.e. any number and combination of isovelocity fluids, fluids with sound speed gradients and isotropic elastic media. In addition, as a new feature any number of transversely isotropic layers may be specified (all with vertical symmetry axis). Further, media with general dispersion characteristics can be included.

Version 2.0 of OASES in addition allows for stratifications including an arbitrary number of poro-elastic layers, with the propagation described by Biot's theory. This modification has been performed by Morrie Stern [5] at the University of Texas at Austin, in collaboration with Nick Chotiros and Jim tencate at ARL/UT. Nick and Morrie suggested I include their modifications in the general OASES export package, for the use and benefit of the general underwater acoustics community. This is a significant additional capability of OASES, and the contribution of the Austin group in that regard is highly appreciated.