Accession Number:

ADA058265

Title:

Comprehensive Studies of Arctic Pack Ice in April 1976.

Descriptive Note:

Data presentation and analysis rept.,

Corporate Author:

WASHINGTON UNIV SEATTLE APPLIED PHYSICS LAB

Report Date:

1978-05-01

Pagination or Media Count:

93.0

Abstract:

During the occupancy of a camp on an ice floe in the Chukchi Sea, studies were made of both the upper and lower surfaces of the pack ice surrounding the camp. Hole drilling and surface observations provided accurate information on ice thickness and composition. A submarine was tracked acoustically as it profiled the underside of the ice. Two aircraft examined the upper surface using photography, infrared imagery, laser profiling and microwave imagery. The highly detailed under-ice profiles show the underside of the ice to be very irregular with little erosion regardless of the age of the ice. The upper surface erodes much faster, and thus gives little evidence of the roughness below. Radiation patterns reveal thickness and age characteristics of the floe but their interpretation requires further investigation. Author

Subject Categories:

  • Snow, Ice and Permafrost

Distribution Statement:

APPROVED FOR PUBLIC RELEASE