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Over the past decade or so a number of ocean-acoustic propagation models have been developed, with the objective of specifying the acoustic field in various types of ocean channel. The perfect model would be exact and completely general, capable of handling the details of propagation in the most complicated ocean-acoustic environment. In reality, none of the models comes close to this ideal. Instead, a hierarchy of assumptions and approximations has led to the appearance of a variety of models, of which some are inter-related, others are hybrids, and all are strictly limited in capability. A casual inspection of the available codes reveals a profusion of choices. In this report, ocean-acoustic propagation modelling is reviewed. The complexities of the ocean-acoustic environment are discussed, the methods adopted by the ocean-acoustic modeller are outlined, and specific models are described, with comments included on their limitations, their suitability for various types of problem, and their availability. As well as two-dimensional models, some recently developed three-dimensional codes are discussed, and stochastic processes in the ocean are considered. A number of recommendations on ocean-acoustic modelling are offered and all models identified in the report, amounting to thirty in total, are tabulated along with comments on their performance and limitations. A key to the laboratories of origin is provided.

Additional information

Authors: BUCKINGHAM M J, Marine Physical Laboratory, Scripps Institution of Oceanography, La Jolla, California (US)
Bibliographic Reference: EUR 13810 EN (1991) 65 pp.
Availability: Available from Mr Weydert, CEC, DG XII, Brussels (BE)
Record Number: 199210892 / Last updated on: 1994-12-02
Original language: en
Available languages: en
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