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Evaluation of an Elastic-Decohesive Rheology for Sea Ice

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SIPW04 - Ice fracture and cracks

Satellite data obtained over the last couple decades have provided a wealth of information on sea ice motion and deformation for use in model comparison and validation. The data clearly show that ice deformation is focused along narrow linear features, which we would like to capture accurately in models. In this talk we describe an elastic-decohesive rheology that explicitly includes discontinuities in the deformation field to represent sea ice cracks. We compare results from an implementation in the UNM MPM sea ice model and a preliminary implementation in the LANL CICE model with RADARSAT Geophysical Processor System deformation data and results from the standard elastic-viscous-plastic rheology.

This talk is part of the Isaac Newton Institute Seminar Series series.

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