Acoustic Attenuation in the Deep Ocean Below 2000 Hz,

Abstract

This report presents a brief summary of existing acoustic attenuation mechanisms and attenuation data. An emperical relation between the attenuation and frequency is developed which fits the available data below 2000 Hz to within 16%. This expression is given by alpha = 0.0265 f to the 3/4 power where f is in KHz and alpha is in dB/Kyd. This expression was developed from the data of Thorp, Kibblewhite, et-al., and Urick. No attempt was made to correlate the attenuation coefficient at low frequencies with temperature, depth or salinity since the quantity of available data is not sufficient and the scatter of the data is too large.

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Document Details

Document Type
Technical Report
Publication Date
Feb 10, 1970
Accession Number
ADA051369

Entities

People

  • J. T. Gottwald

Organizations

  • Tracor

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Absorption Coefficients
  • Acoustic Attenuation
  • Acoustic Propagation
  • Acoustic Waves
  • Acoustics
  • Coefficients
  • Deep Oceans
  • Equations
  • Fluids
  • Frequency
  • Fresh Water
  • Heat Energy
  • Losses
  • Measurement
  • Oceans
  • Sea Water
  • Temperature Gradients

Readers

  • Acoustical Oceanography.
  • Acoustics.
  • Computer Science.