Accession Number:

ADA089950

Title:

Characteristics of Ice in Whitefish Bay and St. Marys River During January, February and March 1979.

Descriptive Note:

Special rept.,

Corporate Author:

COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH

Personal Author(s):

Report Date:

1980-08-01

Pagination or Media Count:

31.0

Abstract:

This report presents data on the full-scale trails of the U.S. Coast Guard Icebreaker Katmai Bay, which was tested in plate ice that varied in thickness from 10 to 33 in. 25.4 to 83.82 cm and had a snow cover of 1 to 6 in. 2.54 to 15.24 cm. In January the average temperature was -5 C, and the ice flexural strength was 13,363 lbsq ft 640 kPa. In March the average temperature was -2 C and the ice flexural strength was 11,643 lbsq ft 560 kPa. The specific weight density of the ice was 0.894 gcc. The specific weight of the snow was in the area of 0.32 gcc. The coefficient of friction between the icesnow and steel plate coated and uncoated varied from a low of 0.02 in the dynamic case of ice on the Inerta 160 coating to 0.47 for the static case of snow on a rusty steel plate.

Subject Categories:

  • Snow, Ice and Permafrost
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE