Very Low Frequency Transmission Loss in Shallow Water.

Abstract

In this study, acoustic transmission loss is calculated at frequencies below cut-off for a shallow water duct. A highly idealized model, based on realistic estimates of the gross acoustic properties of the sea-bed, is used to calculate the energy distribution in range, frequency, and depth as functions of the major environmental parameters. Results show that values of loss, at frequencies below cut-off, are similar to those at the frequency of minimum loss above cut-off. (Author)

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1981
Accession Number
ADA100633

Entities

People

  • Raymond H. Ferris

Tags

Communities of Interest

  • Energy and Power Technologies
  • Sensors

DTIC Thesaurus Topics

  • Acoustic Fields
  • Acoustic Propagation
  • Acoustic Properties
  • Acoustics
  • Air
  • Attenuation
  • Data Sets
  • Detection
  • Equations
  • Frequency
  • Frequency Bands
  • Losses
  • Measurement
  • Shallow Water
  • Transmission Loss
  • Very Low Frequency
  • Water

Readers

  • Acoustical Oceanography.
  • Plasma Physics / Magnetohydrodynamics