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Theory of Acoustic Propagation in a Variable Ocean,
SACLANT ASW RESEARCH CENTRE LA SPEZIA (ITALY)
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A connected account is given of a set of theoretical techniques that can be used in understanding and predicting the behaviour of acoustic waves travelling in a variable ocean. Unity of treatment is provided by the angular plane-wave spectrum representation of acoustic fields. This is applied to the transmission, propagation and reception of sound in an ocean whose surface is randomly rough, and in which the sound speed varies grossly and arbitrarily with depth, and is disturbed by internal waves and turbulent fluctuations. The subject is developed from its elements up to the point where present research efforts can be critically reviewed. Author
APPROVED FOR PUBLIC RELEASE