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Dynamics of coupled ice-ocean system in the marginal ice zone: Study of the mesoscale processes and of constitutive equations for sea iceThis study is aimed at the modelling of mesoscale processed such as up/downwelling and ice edge eddies in the marginal ice zones. A 2-dimensional coupled ice-ocean model is used for the study. The ice model is coupled to the reduced gravity ocean model (f-plane) through interfacial stresses. The constitutive equations of the sea ice are formulated on the basis of the Reiner-Rivlin theory. The internal ice stresses are important only at high ice concentrations (90-100%), otherwise the ice motion is essentially free drift, where the air-ice stress is balanced by the ice-water stress. The model was tested by studying the upwelling dynamics. Winds parallel to the ice edge with the ice on the right produce upwilling because the air-ice momentum flux is much greater that air-ocean momentum flux, and thus the Ekman transport is bigger under the ice than in the open water. The upwelling simulation was extended to include temporally varying forcing, which was chosen to vary sinusoidally with a 4 day period. This forcing resembles successive cyclone passings. In the model with a thin oceanic upper layer, ice bands were formed.
Document ID
19850005139
Document Type
Contractor Report (CR)
Authors
Hakkinen, S. (Florida State Univ. Tallahassee, FL, United States)
Date Acquired
September 5, 2013
Publication Date
December 1, 1984
Subject Category
OCEANOGRAPHY
Report/Patent Number
NAS 1.26:174171
AD-A149691
NASA-CR-174171
Funding Number(s)
CONTRACT_GRANT: NAG5-219
CONTRACT_GRANT: N00014-82-C-0404
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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