Shelf Currents, Ice and Wind: A Numerical Modeling Study
The effects of sea ice, downwelling favorable winds and barotropic background currents on shelf fronts are examined using numerical models. The first part of the thesis uses a three dimensional, primitive equation model to examine the behavior of a shelf front under steady, along shelf winds and bar...
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ftdtic:ADA414324 2023-05-15T16:29:46+02:00 Shelf Currents, Ice and Wind: A Numerical Modeling Study Russell, Sarah L. MASSACHUSETTS INST OF TECH CAMBRIDGE 2003-02 text/html http://www.dtic.mil/docs/citations/ADA414324 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA414324 en eng http://www.dtic.mil/docs/citations/ADA414324 APPROVED FOR PUBLIC RELEASE DTIC AND NTIS Physical and Dynamic Oceanography Snow Ice and Permafrost *OCEAN CURRENTS *SEA ICE MATHEMATICAL MODELS THESES CONTINENTAL SHELVES BAROMETRIC PRESSURE MIXED LAYER(MARINE) OCEAN MODELS WIND STRESS OFFSHORE GREENLAND FLUX DENSITY AQ M03-08-2108 EKMAN TRANSPORT Text 2003 ftdtic 2016-02-21T05:53:03Z The effects of sea ice, downwelling favorable winds and barotropic background currents on shelf fronts are examined using numerical models. The first part of the thesis uses a three dimensional, primitive equation model to examine the behavior of a shelf front under steady, along shelf winds and barotropic currents. The wind stress generates shoreward surface Ekman transport and the barotropic current generates an offshore bottom Ekman transport. In both cases, the Ekman transport causes the creation of mixed layers and a relationship describing the mixed layer thickness is derived relating the cross shelf flux of density to the along shelf flux of density. The second part of the thesis focuses on the ice-ocean interaction using a simple, two layer, one dimensional toy model. In the presence of a current and the absence of wind, the ice is transported downstream with the current. In the presence of wind and the absence of a current, the net ice-ocean transport is perpendicular to the wind, as is expected for Ekman layer theory. The two layer system acts like a poorly resolved Ekman spiral: the ice has down wind and shoreward transport while the ocean has up wind and shoreward transport. Prepared in cooperation with Woods Hole Oceanographic Institution, Woods Hole, MA. Text Greenland Ice permafrost Sea ice 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 |
Physical and Dynamic Oceanography Snow Ice and Permafrost *OCEAN CURRENTS *SEA ICE MATHEMATICAL MODELS THESES CONTINENTAL SHELVES BAROMETRIC PRESSURE MIXED LAYER(MARINE) OCEAN MODELS WIND STRESS OFFSHORE GREENLAND FLUX DENSITY AQ M03-08-2108 EKMAN TRANSPORT |
spellingShingle |
Physical and Dynamic Oceanography Snow Ice and Permafrost *OCEAN CURRENTS *SEA ICE MATHEMATICAL MODELS THESES CONTINENTAL SHELVES BAROMETRIC PRESSURE MIXED LAYER(MARINE) OCEAN MODELS WIND STRESS OFFSHORE GREENLAND FLUX DENSITY AQ M03-08-2108 EKMAN TRANSPORT Russell, Sarah L. Shelf Currents, Ice and Wind: A Numerical Modeling Study |
topic_facet |
Physical and Dynamic Oceanography Snow Ice and Permafrost *OCEAN CURRENTS *SEA ICE MATHEMATICAL MODELS THESES CONTINENTAL SHELVES BAROMETRIC PRESSURE MIXED LAYER(MARINE) OCEAN MODELS WIND STRESS OFFSHORE GREENLAND FLUX DENSITY AQ M03-08-2108 EKMAN TRANSPORT |
description |
The effects of sea ice, downwelling favorable winds and barotropic background currents on shelf fronts are examined using numerical models. The first part of the thesis uses a three dimensional, primitive equation model to examine the behavior of a shelf front under steady, along shelf winds and barotropic currents. The wind stress generates shoreward surface Ekman transport and the barotropic current generates an offshore bottom Ekman transport. In both cases, the Ekman transport causes the creation of mixed layers and a relationship describing the mixed layer thickness is derived relating the cross shelf flux of density to the along shelf flux of density. The second part of the thesis focuses on the ice-ocean interaction using a simple, two layer, one dimensional toy model. In the presence of a current and the absence of wind, the ice is transported downstream with the current. In the presence of wind and the absence of a current, the net ice-ocean transport is perpendicular to the wind, as is expected for Ekman layer theory. The two layer system acts like a poorly resolved Ekman spiral: the ice has down wind and shoreward transport while the ocean has up wind and shoreward transport. Prepared in cooperation with Woods Hole Oceanographic Institution, Woods Hole, MA. |
author2 |
MASSACHUSETTS INST OF TECH CAMBRIDGE |
format |
Text |
author |
Russell, Sarah L. |
author_facet |
Russell, Sarah L. |
author_sort |
Russell, Sarah L. |
title |
Shelf Currents, Ice and Wind: A Numerical Modeling Study |
title_short |
Shelf Currents, Ice and Wind: A Numerical Modeling Study |
title_full |
Shelf Currents, Ice and Wind: A Numerical Modeling Study |
title_fullStr |
Shelf Currents, Ice and Wind: A Numerical Modeling Study |
title_full_unstemmed |
Shelf Currents, Ice and Wind: A Numerical Modeling Study |
title_sort |
shelf currents, ice and wind: a numerical modeling study |
publishDate |
2003 |
url |
http://www.dtic.mil/docs/citations/ADA414324 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA414324 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice permafrost Sea ice |
genre_facet |
Greenland Ice permafrost Sea ice |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/ADA414324 |
op_rights |
APPROVED FOR PUBLIC RELEASE |
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1766019484044230656 |