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Theories of rough surface scatter and gas bubble behavior are used with the Pierson-Moskowitz wind-wave spectrum and an empirically-guided formulation of bubble concentrations at sea to calculate the true velocity gradient and losses "at the surface." These values are then entered into Bucker's wave theory solution for sound propagation and leakage in a surface duct. Curves of propagation loss are calculated for comparison with ocean test data obtained with the SQS-26 sonar. The predictions are shown to be significantly better than those based on the empirical equations of project AMOS. (Author)
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Sound, Transmission, Ocean waves, Underwater acousticsShowing 1 featured edition. View all 1 editions?
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The rough surface and bubble effects on sound propagation in a surface duct
1971, Naval Postgraduate School
in English
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Edition Notes
Title from cover.
"Ocean Physics Group, Physics Department" -- Cover.
"12 Oct 1971"--Cover.
"NPS-61Md71101A"--Cover.
Includes bibliographical references (p. 33-34).
"Approved for public release; distribution unlimited"--Cover.
Technical report; 1971.
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