Acoustic Attenuation in Ocean Sediments Found in Shallow Water Regions.

Abstract

The acoustic attenuation in ocean sediments is a major loss mechanism for low frequency acoustic propagation in shallow water regions. Analysis of measured propagation in these regions has generally included estimates of the attenuation in the sediment, without consideration of the variations in attenuation as a function of depth. It will be shown that these variations can have a significant impact on the standard estimates. A new procedure is then developed which provides estimates of the attenuation as a function of depth. This procedure is used to obtain attenuation depth profiles in three shallow water regions. These estimated profiles present characteristics observed in laboratory and in situ measurements.

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Document Details

Document Type
Technical Report
Publication Date
Feb 29, 1984
Accession Number
ADA140869

Entities

People

  • K. C. Focke

Organizations

  • University of Texas at Austin

Tags

Communities of Interest

  • Air Platforms
  • C4I
  • Ground and Sea Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Acoustic Attenuation
  • Acoustic Frequencies
  • Acoustic Measurement
  • Acoustic Phenomena
  • Acoustic Propagation
  • Acoustic Properties
  • Acoustics
  • Bottom Bounce
  • Bottom Loss
  • Deep Oceans
  • Equations
  • Frequency
  • Geography
  • Oceans
  • Physics
  • Physics Laboratories
  • Universities

Readers

  • Acoustics.
  • Geotechnical Engineering.
  • Wave Propagation and Nonlinear Chaotic Dynamics.