Accession Number:

AD0733239

Title:

A Thermodynamic Model of a Central Arctic Open Lead.

Descriptive Note:

Master's thesis,

Corporate Author:

NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF

Personal Author(s):

Report Date:

1971-09-01

Pagination or Media Count:

86.0

Abstract:

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 oceans 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

Subject Categories:

  • Snow, Ice and Permafrost

Distribution Statement:

APPROVED FOR PUBLIC RELEASE