An Analysis of Oceanographic and Acoustic Fluctuations for Deep and Shallow Water Environments: Towards a Unification of Observations, Models, and Theory
NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF OCEANOGRAPHY
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The long-term goals of this research are to understand the predictability of acoustic variability in both deep and shallow water ocean environments. The objectives of this work are the development of accurate, and computationally efficient, reduced-physics acoustic propagation models for the prediction of the statistics of ocean acoustic signals. Three potentially useful models are being considered 1 A coupled mode theory for acoustic propagation through random fields of sound speed perturbations, like those from the Garrett-Munk GM internal wave spectrum, or modification there-to for shallow water, 2 A coupled mode theory for acoustic propagation through shallow water, non-linear internal waves, and 3 Munk and Zachariasen Rytov theory for the prediction of spectra of phase and log-amplitude of low frequency, relatively short range propagation along a geometric ray path.