Abstract
Dozier and Tappert published a statistical theory of acoustic propagation in a random ocean [J. Acoust. Soc. Am. 63, 353–365 (1978)]. Their theory predicts the statistical moments of the acoustic mode amplitudes. The acoustic modes are coupled by random variability in the water column. Creamer extended the theory to include bottom loss, an important factor in shallow-water applications [J. Acoust. Soc. Am. 99, 2825–2838 (1996)]. In the present paper, the extended theory is applied to propagation through a realistic shallow-water internal wave model. An efficient computational algorithm is developed that makes practical the theory’s application to observed sound speed and buoyancy profiles. Model parameters such as bottom loss and internal-wave strength can be varied with minimal computational cost. Numerical results are presented that demonstrate the competing effects of modal attenuation and mode coupling. [Work supported by ONR.]
Published Version
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