Research Summaries

Back Analysis and modeling for the Philippine Sea and Canada Basin Acoustic Propagation Experiments

Fiscal Year 2018
Division Graduate School of Engineering & Applied Science
Department Oceanography
Investigator(s) Colosi, John A.
Sponsor Office of Naval Research (Navy)
Summary Acoustic fields in the ocean are statistical in nature due to the variability that exists in the ocean environment. The focus of this research is the development of computationally efficient, reduced physics ocean and acoustics models to predict Navy relevant acoustic field statistics such as mean transmission loss, rms transmission loss fluctuation, and spatio-temporal coherence functions for deep water, shallow water, mixed layers and high latitude environments. The goal of this proposal is to continue our groups work along these lines, with respect to two larger ONR field programs: The PhilSea10 Experiment and the Canada Basin Acoustic Propagation Experiment (CANAPE). Both Feynman path integral and mode transport theory methodologies will be utilized. Lastly we will put some effort into a new area, the surface mixed layer duct. Mode transport theory with its accurate treatment of diffraction and both rough surface and volumetric variability is ideally suited for this problem, and previously collected oceanographic data sets from the SPICE05 experiment will help characterize the duct.
Keywords
Publications Publications, theses (not shown) and data repositories will be added to the portal record when information is available in FAIRS and brought back to the portal
Data Publications, theses (not shown) and data repositories will be added to the portal record when information is available in FAIRS and brought back to the portal