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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ftdtic:ADA209192 2023-05-15T16:03:41+02:00 A Numerical Study of a Mesoscale Eddy Interaction with an Ocean Front in the Marginal Ice Zone Lumpkin, Rutledge P. NAVAL POSTGRADUATE SCHOOL MONTEREY CA 1989-03 text/html http://www.dtic.mil/docs/citations/ADA209192 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA209192 en eng http://www.dtic.mil/docs/citations/ADA209192 Approved for public release; distribution is unlimited. DTIC AND NTIS 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 Text 1989 ftdtic 2016-02-23T05:36:27Z 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. Text East Greenland east greenland current Greenland Ice permafrost Defense Technical Information Center: DTIC Technical Reports database Greenland |
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Open Polar |
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Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
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 |
spellingShingle |
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 Lumpkin, Rutledge P. A Numerical Study of a Mesoscale Eddy Interaction with an Ocean Front in the Marginal Ice Zone |
topic_facet |
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 |
description |
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. |
author2 |
NAVAL POSTGRADUATE SCHOOL MONTEREY CA |
format |
Text |
author |
Lumpkin, Rutledge P. |
author_facet |
Lumpkin, Rutledge P. |
author_sort |
Lumpkin, Rutledge P. |
title |
A Numerical Study of a Mesoscale Eddy Interaction with an Ocean Front in the Marginal Ice Zone |
title_short |
A Numerical Study of a Mesoscale Eddy Interaction with an Ocean Front in the Marginal Ice Zone |
title_full |
A Numerical Study of a Mesoscale Eddy Interaction with an Ocean Front in the Marginal Ice Zone |
title_fullStr |
A Numerical Study of a Mesoscale Eddy Interaction with an Ocean Front in the Marginal Ice Zone |
title_full_unstemmed |
A Numerical Study of a Mesoscale Eddy Interaction with an Ocean Front in the Marginal Ice Zone |
title_sort |
numerical study of a mesoscale eddy interaction with an ocean front in the marginal ice zone |
publishDate |
1989 |
url |
http://www.dtic.mil/docs/citations/ADA209192 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA209192 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
East Greenland east greenland current Greenland Ice permafrost |
genre_facet |
East Greenland east greenland current Greenland Ice permafrost |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/ADA209192 |
op_rights |
Approved for public release; distribution is unlimited. |
_version_ |
1766399380876689408 |