Measurements of the Low-Frequency Wind-Generated Ambient Noise in the Deep Ocean.

Abstract

This document presents the oral and visual presentation entitled 'Measurements of the Low-Frequency Wind-Generated Ambient Noise in the Deep Ocean,' presented at the 101st Meeting of the Acoustical Society of America, 21 May 1981, in Ottawa, Ontario, Canada. Southern Hemisphere oceans provide unique conditions for the measurements of low-frequency wind-generated ambient noise due to their relatively low shipping densities. Results (10-500 Hz) for a single location in the South Fiji Basin supported the two principal noise generation mechanisms that have been suggested: turbulence, bubbles and spray. For a given local wind speed, higher noise levels were observed than have been reported for the North Atlantic Ocean. This paper is an analysis of wind-generated noise data from additional sites throughout the Tasman Sea-Fiji Basin region. Variation in measured level is compared to wind speed, sea state, and propagation conditions. It appears that local wind speed is not an absolute indicator of wind generated ambient noise level.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1981
Accession Number
ADA105748

Entities

People

  • D. G. Browning
  • K. M. Guthrie
  • R. N. Denham
  • R. W. Bannister

Organizations

  • Naval Underwater Systems Center

Tags

Communities of Interest

  • Sensors
  • Weapons Technologies

DTIC Thesaurus Topics

  • Ambient Noise
  • Atlantic Ocean
  • Deep Oceans
  • Engineering
  • Frequency
  • Hemispheres
  • Measurement
  • Mechanical Engineering
  • New Zealand
  • Noise
  • North Atlantic Ocean
  • Northern Hemisphere
  • Oceans
  • Physics
  • Southern Hemisphere
  • Standards
  • Universities

Fields of Study

  • Environmental science

Readers

  • Acoustics.
  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Oceanography.