A numerical study of a mesoscale eddy interaction with an ocean front in the marginal ice zone

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Author
Lumpkin, Rutledge P.
Date
1989-03Advisor
Smith, D.C.
Second Reader
Gascard, Jean-Claude
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Show full item recordAbstract
The East Greenland Current and its associated Marginal
Ice Zone is a region of intense dynamical activity. A two
layer, primitive equation, numerical model is used to
simulate an eddy-jet interaction in the East Greenland
marginal ice zone region. The effects of wind direction,
topography, and sense of eddy rotation on the eddy-jet
interaction are examined to determine the seaward ice
transport, icebanding, and dipole formation. It is
determined that an anticyclone (15 cm/s) interacting with
a jet (30 cm/s) will develop a dipole that advects ice away
from the ice edge. The dipole formation and ice advection
away from the ice edge is not seen for a cyclone-jet
interaction. It is also seen that a jet with no winds
flowing parallel to the ice edge will create an iceband due
to the cross ice edge Ekman transport. The interaction of
both the cyclone and anticyclone with the jet creates
downstream perturbations in the jet leading to a sinuous
ice edge. Winds greater than 10 m/s dominate the ice
dynamics over that induced by the ocean flow fields .
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