Author(s): A. Barker; G. W. Timco; B. Wright

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Abstract: The date of formation of a large sea ice ridge in the Canadian Beaufort Sea was established within a one week time-frame, based upon satellite tracking of ridge development in the area of interest. During subsequent field work at the site, a single line across the ridge was surveyed and a number of holes were drilled to estimate the rate of consolidation of the ridge over the fourweek period since its formation. It was observed that there were considerable differences in the morphology of the ridge along its length. In some cases there was a classic ridge shape whereas in other areas, the ridge was relatively flat. Limited profiling of the ridge was performed at one site in which the maximum sail height was 3.7 m. The profile values were directly compared or extrapolated to compare with the “average” first-year ridge values documented by Timco and Burden (1997). In general, there was good correlation. The depth of the measured consolidated layer was approximately twice the estimated thickness of level ice if it had grown under these meteorological conditions for the four weeks since its formation.

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Year: 2008