A Numerical Study of a Mesoscale Eddy Interaction with an Ocean Front in the Marginal Ice Zone

The East Greenland Current and its associated marginal ice zone is a region of intense dynamic 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 o...

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Bibliographic Details
Main Author: Lumpkin, Rutledge P.
Other Authors: NAVAL POSTGRADUATE SCHOOL MONTEREY CA
Format: Text
Language:English
Published: 1989
Subjects:
Meteorology
Physical and Dynamic Oceanography
Snow
Ice and Permafrost
*EDDIES(FLUID MECHANICS)
*AIR WATER INTERACTIONS
*FRONTS(OCEANOGRAPHY)
*MARGINAL ICE ZONES
WIND
NUMERICAL ANALYSIS
INTENSITY
THESES
TOPOGRAPHY
TRANSPORT PROPERTIES
FLOW FIELDS
ICE
TRANSPORT
DIPOLES
WIND DIRECTION
PERTURBATIONS
EQUATIONS
ROTATION
OCEAN MODELS
CIRCULATION
ADVECTION
JET FLOW
EAST(DIRECTION)
GREENLAND
EDGES
LAYERS
DYNAMICS
MATHEMATICAL MODELS
OCEAN CURRENTS
EDDY JET INTERACTIONS
EKMAN TRANSPORT
OCEAN CIRCULATION
Greenland
East Greenland
east greenland current
Ice
permafrost
Online Access:http://www.dtic.mil/docs/citations/ADA209192
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA209192
Description
Summary:The East Greenland Current and its associated marginal ice zone is a region of intense dynamic 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 that 10 m/s dominate the ice dynamics over that induced by the ocean flow fields. Keywords: Ocean currents; Air water interactions; Eddies fluid mechanics; Jet flow; Ocean circulation; Ekman transport properties.

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