A Thermodynamic Model of a Central Arctic Open Lead.

• Main Author: Schaus,Richard Harris
• Other Authors: NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF
• Format: Text
• Language: English
• Published: 1971
• Subjects: Snow; Ice and Permafrost; *SEA ICE; *ARCTIC REGIONS; MATHEMATICAL MODELS; THERMODYNAMICS; HEAT FLUX; DIFFUSION; SEA WATER; SALTS; TRANSPORT PROPERTIES; COOLING; CONVECTION(HEAT TRANSFER); THESES; POLAR REGIONS; ADVECTION; HEAT BUDGET; ICE FORECASTING; ICE COVER; Arctic; Ice; permafrost; Sea ice
• Online Access: http://www.dtic.mil/docs/citations/AD0733239; http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0733239

A time-dependent, two-dimensional thermodynamic model of an open lead in central arctic sea ice is presented. The model is generated by opening a lead of finite width and infinite extent in the equilibrium sea-ice cover. From this initial condition, the model is integrated numerically as a sea-ice cover is reestablished over the lead. The effects of various representative advective parameterizations, and temperature and salinity profiles in the ocean's surface layer, on the heat flux through the lead and on the nature of ice formation are investigated as the lead closes by thermal processes alone. Continuity equations involving a horizontal advection term and a vertical diffusion term govern heat and salt transport in the water. Cooling-induced convective overturn as a mechanism for vertical heat and salt transport in the water column is treated through an artifice of the vertical diffusion term. (Author)