Acoustic Pressure Distribution on the Bottom of a Wedge-Shaped Ocean.

Abstract

The pressure amplitude distribution along the interface between a wedge-shaped fluid layer overlying fast and slow fluid bottoms were investigated using compute models based on the method of images. The pressure amplitude along the bottom rapidly falls off for distances closer to the apex than that at which adiabatic-mode theory predicts cut-off for the lowest mode. This distance is termed the dump distance for an acoustically fast-bottom condition. In the case of a slow bottom, because the speed of sound ratio is greater than 1, the dump distance does not exist. To facilitate scaling the acoustic fields, a scaling distance is introduced.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1987
Accession Number
ADA193961

Entities

People

  • Yu-ming Li

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • C4I
  • Energy and Power Technologies
  • Sensors

DTIC Thesaurus Topics

  • Acoustic Fields
  • Acoustic Propagation
  • Acoustic Waves
  • Acoustics
  • Boundaries
  • Computers
  • Engineering
  • Equations
  • Geometry
  • Graphics
  • Plastic Explosives
  • Pressure Distribution
  • Ray Tracing
  • Schools
  • Three Dimensional
  • Underwater Acoustics
  • Wave Equations

Fields of Study

  • Physics

Readers

  • Acoustical Oceanography.
  • Fluid Mechanics and Fluid Dynamics.
  • Geodesy