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Title: Ice arching and the drift of pack ice through restricted channels
Authors: National Research Council of Canada.
United States. National Oceanic and Atmospheric Administration.
United States. Bureau of Land Management.
Memorial University of Newfoundland.
Sodhi, D. S.
Keywords: Arching
Mathematical models
Hydraulic Engineering
Sea ice
Bering Strait
Amundsen Gulf
Publisher: Cold Regions Research and Engineering Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: CRREL report ; 77-18.
Description: CRREL Report
Abstract: Models originally developed to describe the arching and the movement of granular materials through hoppers or chutes are applied to the arching and drift of pack ice in straits and gulfs having lengths of 50 to 500 km. Verification of the usefulness of the models is attempted by making comparisons with ice deformation patterns as observed via satellite imagery in the Bering Strait region and in Amundsen Gulf. The results are encouraging in that there is good correspondence between observed arching and lead patterns and those predicted by theory. In addition, values determined via the model for the angle of internal friction (≈ 30° to 35°) and the cohesive strength per unit thickness (≈ 2000 N/m) are similar to values obtained by other approaches. It is estimated that if the wind velocity parallel to the Bering Strait exceeds ≈ 6 m/s, there will be ice flow through the strait.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:CRREL Report

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