Freely Drifting Swallow Float Array: September 1985 Trip Report

Abstract

Self-contained, freely-drifting Swallow floats capable of recording very low frequency (1-10 Hz) ambient ocean noise are under development at the Marine Physical Laboratory, Scripps Inst of Oceanography, San Diego, CA. The floats are ballasted to neutral buoyancy at midwater depth where they record the components of particle velocity from which sound pressure levels may be derived. A high frequency acoustic mutual interrogation system may be used to determine relative float positions. During an experiment conducted between 9 and 13 September 1985 approximately 150 miles southwest of San Diego, five Swallow float buoys were deployed to depths of 1100 to 3600 meters over a 48 hour period. This technical memorandum reports preliminary results of that experiment. Keywords: Swallow floats; Ambient ocean noise; Particle velocity; and Very low frequency.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1986
Accession Number
ADA169513

Entities

People

  • G. L. Edmonds
  • J. C. Nickles
  • R. L. Culver
  • V. C. Anderson
  • William Hodgkiss

Organizations

  • Scripps Institution of Oceanography

Tags

Communities of Interest

  • Ground and Sea Platforms
  • Sensors
  • Weapons Technologies

DTIC Thesaurus Topics

  • Automatic Gain Control
  • California
  • Detection
  • Dynamic Range
  • Engineering
  • Frequency
  • Interrogation
  • Measurement
  • Military Research
  • Naval Warfare
  • Oceanography
  • Oceans
  • Particles
  • Seabed
  • Sound Pressure
  • Spectra
  • Very Low Frequency

Readers

  • Oceanography.
  • Radar Systems Engineering.