Analysis of Sea Test Data 1.

Abstract

Sound propagation from water into the sediment was analyzed specifically to test the validity of Biot's theory at high frequencies. Two acoustic waves were detected in sand as predicted by the theory. Measurements were made in both muddy and sandy sediments. Experiments were conducted by NRL/SSC in cooperation with ARL:UT in a muddy sediment in Eckernfoerde, Germany, and in a sandy sediment off Panama City, Florida. Carrier frequencies used were 20, 40, 60, 90, 110, 131,150, and 179 kHz. Anomalies in the measured sound pressure as a function of depth prevented the estimation of absorption coefficients at the lower frequencies.

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Document Details

Document Type
Technical Report
Publication Date
Apr 20, 1995
Accession Number
ADA313831

Entities

People

  • Nicholas P. Chotiros

Organizations

  • University of Texas at Austin

Tags

Communities of Interest

  • Ground and Sea Platforms
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Acoustic Propagation
  • Acoustic Waves
  • Coefficients
  • Contracts
  • Frequency
  • Frequency Bands
  • Grazing Angles
  • Military Research
  • Naval Operations
  • Naval Warfare
  • Navy
  • Physical Properties
  • Physics Laboratories
  • Sediments
  • Surface Warfare
  • Undersea Warfare
  • Warfare

Readers

  • Acoustical Oceanography.