AMBIENT NOISE AND SOUND TRANSMISSION IN TROPICAL WATERS.

Abstract

Measurements of ambient noise were carried out in the Tongue of the Ocean during cruises of the R/V GERDA in 1958 and 1959. Data were obtained on the spectrum levels of ambient noise in relation to windspeed, sea state and water depth at various locations. In 1960 and 1961, exploratory studies of the contributions of surface waves to ambient noise were made at the Bimini Hydrophone Installation. In 1959, sound propagation tests in the Tongue of the Ocean employing a series of explosive charges, showed the existence of a surface channel and indicated the possibilities using such tests to determine its properties. Other work under contract included the measurement of noise radiated by the oceanographic vessel USNS GIBBS and the ultrasonic absorption of natural suspensions of calcium carbonate and other substances. (Author)

Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1962
Accession Number
AD0695130

Entities

Organizations

  • Rosenstiel School of Marine, Atmospheric, and Earth Science

Tags

Communities of Interest

  • Counter IED

DTIC Thesaurus Topics

  • Ambient Noise
  • Calcium Compounds
  • Explosive Charges
  • Explosives
  • Measurement
  • Noise
  • Oceans
  • Sound Transmission
  • Surface Waves
  • Tongue Of The Ocean

Readers

  • Acoustics.
  • Oceanography.
  • Surface Engineering/Surface Coating Technology.