Accession Number:

AD0856692

Title:

Study of the Oceanic Polar Front in the Denmark Strait

Descriptive Note:

Master's thesis

Corporate Author:

NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s):

• Nunn, Silas Oscar, III

Report Date:

1968-12-01

Pagination or Media Count:

78.0

Abstract:

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 CKM to 1.68 CKM. 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.

Descriptors:

• *SOUND TRANSMISSION
• *SEA WATER
• THERMAL PROPERTIES
• POLAR REGIONS
• TEMPERATURE
• OCEAN CURRENTS
• COMPUTER PROGRAMMING
• THESES
• ATMOSPHERIC MOTION
• COOLING
• ICE
• SALINITY
• THERMOCLINES
• PERIODIC VARIATIONS
• GREENLAND
• DENMARK

Subject Categories:

• Physical and Dynamic Oceanography
• Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE