14: Unified Description of Scattering and Propagation

For FY14, the first objective was to investigate the statistics of the mode intensity that result from scattering from a randomly rough seabed surface in a shallow water environment. The specific objective was to examine the feasibility of using a 2-way coupled mode methodology to analyze observed monostatic reverberation collected off Panama City, FL in 2013 in the 2-4 kHz band. The second objective was to extract information about the frequency dependence of seabed attenuation for a soft thick sediment. A third objective was to use ship radiated sound to extract marginal probability distributions for both α and γ, where A(dB/m) = α (f/1000), in a shallow water environment with a sandy seabed.