ARCTIC A Rare Second Year- Lake Ice Cover in the Canadian High Arctic

• Main Authors: W. P. Adams, P. T. Doran, M. Ecclestone, C. M. Kingsbury, C. J. Allan
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Published: 1988
• Subjects: Arctic; Heiberg; Territoires du Nord-Ouest
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.524.9546; http://pubs.aina.ucalgary.ca/arctic/Arctic42-4-299.pdf

This is a relatively rare event. Observations and measurements of the thickness and specific conductance of the lake ice cover were made at the end of the 1986 summer and again in the following spring. The residual ice cover (second-year ice with first-year ice beneath it) was significantly thicker and had a lower specific conductance than first-year ice formed in marginal leads (moat) that had been ice free in 1986. The first-year ice that grew beneath the residual ice cover had the lowest specific conductance. Distribution of snow on the lake was affected by the roughness of the second-year ice (as compared to the smoother moat ice) and differences in elevation between second-year (high) and moat ice. Key words: High Arctic, specific conductance, residual ice cover, snow distribution RÉSUMÉ. Colour Lake, dans l’île Axel Heiberg (Territoires du Nord-Ouest- 79’25 ’ de latitude Nord, 90045 ’ de longitude Ouest) est resteé