Accession Number:

ADA066336

Title:

An Analysis of Ice Profiles Obtained by Submarine Sonar in the AIDJEX Area of the Beaufort Sea.

Descriptive Note:

Data analysis and presentation rept. for period ending 1976,

Corporate Author:

SCOTT POLAR RESEARCH INST CAMBRIDGE (ENGLAND)

Personal Author(s):

Report Date:

1978-12-01

Pagination or Media Count:

69.0

Abstract:

A profile of the ice cover in the southern Beaufort Sea was obtained by the submarine USS GURNARD in April 1976, using a narrow-beam upward-looking sonar. The 1400 km profile consisted of three legs, of which the long south-north and east-west legs intersected near the Caribou camp of the AIDJEX experiment. A statistical analysis was carried out over contiguous 50 km sections to yield probability density functions of the drafts of ice and of level ice, distributions of keel spacings and drafts, and the frequencies and widths of leads. Two distinct types of ice cover were found. The first, nearest the coast in the south and west of the experimental area, consisted of heavily ridged ice with mean drafts of up to 5.1 m. The rest of the track 1200 km consisted of a homogeneous ice cover with a mean draft of 3.7 m. The percentage of thin ice varied greatly between sections, with a range of 0.4 to 12.3 for ice of 0-1 m draft.

Subject Categories:

  • Snow, Ice and Permafrost
  • Acoustic Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE