Accession Number:

ADA043823

Title:

The Rough Surface and Bubble Effects on Sound Propagation in a Surface Duct,

Descriptive Note:

Corporate Author:

NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF

Personal Author(s):

Report Date:

1971-10-12

Pagination or Media Count:

50.0

Abstract:

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 Buckers 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

Subject Categories:

  • Physical and Dynamic Oceanography
  • Acoustic Detection and Detectors
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE