Accession Number:

ADA046559

Title:

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

Descriptive Note:

Technical note,

Corporate Author:

NAVAL OCEANOGRAPHIC OFFICE WASHINGTON D C

Personal Author(s):

Report Date:

1975-07-01

Pagination or Media Count:

22.0

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.

Subject Categories:

  • Physical and Dynamic Oceanography
  • Acoustic Detection and Detectors
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE