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Rheology of Discrete Failure Regimes of Anisotropic Sea Ice
Publisher: American Meteorological Society
Abstract: rheological model of sea ice is presented that incorporates the orientational distribution of ice thickness in leads embedded in isotropic floe ice. Sea ice internal stress is determined by coulombic, ridging and tensile ...
Generation of a Buoyancy-Driven Coastal Current by an Antarctic Polynya
Publisher: American Meteorological Society
Abstract: Descent and spreading of high salinity water generated by salt rejection during sea ice formation in an Antarctic coastal polynya is studied using a hydrostatic, primitive equation three-dimensional ocean model called the ...
Dependence of Sea Ice Yield-Curve Shape on Ice Thickness
Publisher: American Meteorological Society
Abstract: In this note, the authors discuss the contribution that frictional sliding of ice floes (or floe aggregates) past each other and pressure ridging make to the plastic yield curve of sea ice. Using results from a previous ...
Influence of Mass Diffusion in Sea Ice Dynamical Models
Publisher: American Meteorological Society
Abstract: The mixing of floes of different thickness caused by repeated deformation of the ice cover is modeled as diffusion, and the mass balance equation for sea ice accounting for mass diffusion is developed. The effect of ...
The Effect of a New Drag-Law Parameterization on Ice Shelf Water Plume Dynamics
Publisher: American Meteorological Society
Abstract: A drag law accounting for Ekman rotation adjacent to a flat, horizontal boundary is proposed for use in a plume model that is written in terms of the depth-mean velocity. The drag law contains a variable turning angle ...
A Multithickness Sea Ice Model Accounting for Sliding Friction
Publisher: American Meteorological Society
Abstract: A multithickness sea ice model explicitly accounting for the ridging and sliding friction contributions to sea ice stress is developed. Both ridging and sliding contributions depend on the deformation type through functions ...
Study of the Impact of Ice Formation in Leads upon the Sea Ice Pack Mass Balance Using a New Frazil and Grease Ice Parameterization
Publisher: American Meteorological Society
Abstract: eads are cracks in sea ice that often form because of deformation. During winter months, leads expose the ocean to the cold atmosphere, resulting in supercooling and the formation of frazil ice crystals within the mixed ...