POMA banner

Three-dimensional model benchmarking for cross-slope wedge propagation

O.C. Rodríguez, orodrig(at)ualg.pt
LARSyS, University of Algarve, Campus de Gambelas, PT-8005-139 Faro, Portugal.
F. Sturm,
Centre National de la Recherche Scientifique, Lyon, France.
M.B. Porter,
HLS Research Inc., La Jolla, California, United States.
P.S. Petrov,
V.I. Il'ichev Pacific Oceanological Institute, Vladivostok, Russian Federation.

Comments: download pdf.
Ref.: 173rd Meeting of the ASA, Boston, MA, USA, June 2017.

Cross-slope wedge propagation is considered for the three-dimensional benchmarking of three underwater acoustic models, one based on normal mode theory and the other two based on ray tracing. To this end the benchmarking relies on analytic solutions for adiabatic and non-adiabatic propagation, as well as on experimental data from a scale tank experiment (a previous benchmarking with a parabolic equation model is known to provide extremely accurate predictions in all cases). The benchmarking allows to identify the advantages, accuracy and limitations of the considered models.