A Discussion of the Numerical Modeling of Sea Ice Ridging

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by Mark A. Hopkins, US Army Cold Regions Research and, Engineering Lab, Hanover, United States,

Document Type: Proceeding Paper

Part of: Engineering Mechanics:

Abstract: Pressure ridging, is the failure mechanism of the Arctic pack ice in compression. The large-scale compressive strength of the ice pack is determined by the aggregate of ridge building events in an area. The components of the aggregate consist of the distribution, orientation, and size of individual ridges. The author has developed realistic numerical models of the growth of two distinct types of pressure ridges. Numerical experiments performed with the ridging models will quantify the energetics of pressure ridging in terms of ice thickness, ice velocity, and material properties. The explicit calculation of energy dissipated relative to the increase in the potential energy of ridged ice will aid large-scale finite-difference modeling of the Arctic Basin.

Subject Headings: Numerical models | Ice | Seas and oceans | Failure analysis | Mathematical models | Hydrologic models | Compressive strength | Aggregates | Arctic

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