The rough surface and bubble effects on sound propagation in a surface duct
By: [by] H. Medwin
Contributors: Naval Postgraduate School (U.S.)
Publisher: Naval Postgraduate School
Published: 1971
Place of publication: Monterey, Calif
Language: eng
Number of pages: 37
Subjects: Sound; Transmission; Ocean waves; Underwater acoustics
Description: 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)
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.