Geo-acoustic Stratification Deep in the Sea Bed from Ambient Noise in Shallow Water

Abstract

The long-term objective is to develop a reliable ambient-noise inversion technique for obtaining the geo-acoustic parameters, including the stratification, of the sea bed from measurements of the broadband vertical coherence of the noise in shallow water. The method would be implemented in a free-floating instrument, self navigated with GPS, and consisting of a pair of vertically aligned hydrophones, to provide a cost-effective sensor system for collecting the required noise data over extensive areas of shallow water. The resultant bottom information would provide essential input to navy propagation loss models.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1997
Accession Number
ADA333313

Entities

People

  • G. Deane
  • M. Buckingham

Organizations

  • Scripps Institution of Oceanography

Tags

Communities of Interest

  • Sensors

DTIC Thesaurus Topics

  • Acoustic Attenuation
  • Acoustic Phenomena
  • Acoustic Propagation
  • Acoustic Properties
  • Acoustics
  • Algorithms
  • Ambient Noise
  • Granular Materials
  • Measurement
  • Mechanical Properties
  • Military Research
  • Noise
  • Physics Laboratories
  • Reflection
  • Seabed
  • Shallow Water
  • Waves

Readers

  • Acoustical Oceanography.

Technology Areas

  • Space