Study of the Oceanic Polar Front in the Denmark Strait

A computer program is utilized to examine the effect on sound propagation of the oceanic polar front in the Denmark Strait and along the Southeastern coast of Greenland. Ray traces are computed with the source in both the cold and warm current areas for surface thermal gradients of 0.036 C/KM to 1.6...

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Bibliographic Details
Main Author: Nunn, Silas Oscar, III
Other Authors: NAVAL POSTGRADUATE SCHOOL MONTEREY CA
Format: Text
Language:English
Published: 1968
Subjects:
Physical and Dynamic Oceanography
Acoustics
*SOUND TRANSMISSION
*SEA WATER
THERMAL PROPERTIES
POLAR REGIONS
TEMPERATURE
OCEAN CURRENTS
COMPUTER PROGRAMMING
THESES
ATMOSPHERIC MOTION
COOLING
ICE
SALINITY
THERMOCLINES
PERIODIC VARIATIONS
GREENLAND
DENMARK
DENMARK STRAIT
RAY TRACING
GRADIENTS
HEAT
MOST PROJECT-2
Greenland
Denmark Strait
Online Access:http://www.dtic.mil/docs/citations/AD0856692
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0856692
Description
Summary:A computer program is utilized to examine the effect on sound propagation of the oceanic polar front in the Denmark Strait and along the Southeastern coast of Greenland. Ray traces are computed with the source in both the cold and warm current areas for surface thermal gradients of 0.036 C/KM to 1.68 C/KM. These gradients are created by varying horizontal distances between actual oceanographic stations. The results indicate greater trapping angles with the source in cold water. A relationship is reported between the surface thermal gradient and the change in trapping angle difference for pairs of runs. The location of the oceanic polar front and the effects of environmental influences on its strength and seasonal movement are described.

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