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Accession Number:
AD0653136
Title:
SURFACE TEMPERATURES AND GROWTH OF SEA ICE.
Descriptive Note:
Research rept.,
Corporate Author:
SNOW ICE AND PERMAFROST RESEARCH ESTABLISHMENT WILMETTE ILL
Report Date:
1961-01-01
Pagination or Media Count:
16.0
Abstract:
Sea-ice surface temperatures observed at Eureka, N.W.T., Canada, during 1949-50 and 1950-51 were used to compute the numerical value of the expression kL rho, where k thermal conductivity, L latent heat of fusion and rho density. The numerical value for these combined physical properties of sea ice was found to increase from approximately 0.000047 to 0.00007 during ice growth between 6 November and 22 December from 0.6 to 1 m thickness. During the increase from 1.1 to 1.3 m between 20 January and 10 February the value of kL rho ranged from 0.00007 to 0.00008 and then decreased slightly during the rest of the growth period. These variations in the value of kL rho throughout the winter season were considered as changes in the effective conductivity caused by physical changes and distribution of brine in the sea ice. Since no observations on sea-ice salinity were made at Eureka, it was not possible to investigate the effect of the physical properties separately. A study on the relation between sea-ice accretion and temperature gradient disclosed a correlation coefficient of r 0.73. Author
Distribution Statement:
APPROVED FOR PUBLIC RELEASE
