An Experiment to Investigate the Effect of the Gulf Stream Front on Long Range Acoustic Propagation.

Abstract

Acoustic charges were detonated on a line normal to the Gulf Stream and recorded at Bermuda. Received signals indicate areas of poor transmission associated with the North and South Walls of the Gulf Stream. Conversely, high levels were received from charges detonated north of the Stream. These phenomena can possibly be explained by varying sonic layer depths and a deepening sound channel axis between Slope Water and deep warm isothermal layers of Sargasso Sea water. Other factors possibly related to amplitude fluctuations may be internal waves and patches of water different from surrounding areas. Further experiments to delineate seasonal and angular factors are being planned.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1975
Accession Number
ADA046559

Entities

People

  • C. Levenson
  • R. Doblar

Organizations

  • Naval Oceanographic Office

Tags

Communities of Interest

  • Air Platforms
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Acoustic Propagation
  • Acoustic Signals
  • Acoustic Waves
  • Amplitude
  • Data Analysis
  • Detection
  • Gulf Stream
  • Inertial Navigation
  • Internal Waves
  • Navigation
  • Oceans
  • Sargasso Sea
  • Sea Water
  • Surface Temperature
  • Water
  • Wave Propagation
  • Waves

Fields of Study

  • Physics

Readers

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