A Numerical Study of Topographically Steered Flows in the Fram Strait
The Fram Strait is a region of complex circulation and intense dynamical activity. Its general circulation is largely influenced by the East Greenland Current (EGC), the associated Marginal Ice Zone jet, the West Spitzbergen Current (WSC) and the topography of the region. The general circulation was...
Main Author: | |
---|---|
Other Authors: | |
Format: | Text |
Language: | English |
Published: |
1989
|
Subjects: | |
Online Access: | http://www.dtic.mil/docs/citations/ADA212818 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA212818 |
id |
ftdtic:ADA212818 |
---|---|
record_format |
openpolar |
spelling |
ftdtic:ADA212818 2023-05-15T16:03:38+02:00 A Numerical Study of Topographically Steered Flows in the Fram Strait McShane, David W. NAVAL POSTGRADUATE SCHOOL MONTEREY CA 1989-06 text/html http://www.dtic.mil/docs/citations/ADA212818 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA212818 en eng http://www.dtic.mil/docs/citations/ADA212818 Approved for public release; distribution is unlimited. DTIC AND NTIS Physical and Dynamic Oceanography *STRAITS *OCEAN CURRENTS *WATER FLOW *ATLANTIC OCEAN DYNAMICS LAYERS NUMERICAL ANALYSIS INTENSITY THESES SENSITIVITY TOPOGRAPHY REGIONS BOUNDARIES VERTICAL ORIENTATION CIRCULATION TRAPS GREENLAND STEERING POSITION(LOCATION) MATHEMATICAL MODELS SHEAR PROPERTIES VELOCITY *FRAM STRAIT *STEERED FLOWS EAST GREENLAND CURRENT ICE ZONE JETS WEST SPITZBERGEN CURRENT WATER CIRCULATION Text 1989 ftdtic 2016-02-23T05:09:27Z The Fram Strait is a region of complex circulation and intense dynamical activity. Its general circulation is largely influenced by the East Greenland Current (EGC), the associated Marginal Ice Zone jet, the West Spitzbergen Current (WSC) and the topography of the region. The general circulation was studied using a two-layered numerical model. Forcing of the model was done by varying: the inflow and outflow velocity; the port locations and boundary conditions; and by adjustment of topography. Representative topography of the Fram Strait was modeled in the lower layer. Results indicate that the model is sensitive to EGC width and its proximity to the western boundary; and that in the absence of EGC flow the Return Atlantic Current does not exist. Investigation of model sensitivity to WSC inflow vertical shear lead to the conclusion that when the WSC inflow is 10 cm/sec in the upper layer and 5 cm/sec in the lower layer a boundary trapped component of the WSC is generated. Keywords: Atlantic Ocean; Ocean currents. Theses. Text East Greenland east greenland current Fram Strait Greenland Spitzbergen Defense Technical Information Center: DTIC Technical Reports database Greenland |
institution |
Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Physical and Dynamic Oceanography *STRAITS *OCEAN CURRENTS *WATER FLOW *ATLANTIC OCEAN DYNAMICS LAYERS NUMERICAL ANALYSIS INTENSITY THESES SENSITIVITY TOPOGRAPHY REGIONS BOUNDARIES VERTICAL ORIENTATION CIRCULATION TRAPS GREENLAND STEERING POSITION(LOCATION) MATHEMATICAL MODELS SHEAR PROPERTIES VELOCITY *FRAM STRAIT *STEERED FLOWS EAST GREENLAND CURRENT ICE ZONE JETS WEST SPITZBERGEN CURRENT WATER CIRCULATION |
spellingShingle |
Physical and Dynamic Oceanography *STRAITS *OCEAN CURRENTS *WATER FLOW *ATLANTIC OCEAN DYNAMICS LAYERS NUMERICAL ANALYSIS INTENSITY THESES SENSITIVITY TOPOGRAPHY REGIONS BOUNDARIES VERTICAL ORIENTATION CIRCULATION TRAPS GREENLAND STEERING POSITION(LOCATION) MATHEMATICAL MODELS SHEAR PROPERTIES VELOCITY *FRAM STRAIT *STEERED FLOWS EAST GREENLAND CURRENT ICE ZONE JETS WEST SPITZBERGEN CURRENT WATER CIRCULATION McShane, David W. A Numerical Study of Topographically Steered Flows in the Fram Strait |
topic_facet |
Physical and Dynamic Oceanography *STRAITS *OCEAN CURRENTS *WATER FLOW *ATLANTIC OCEAN DYNAMICS LAYERS NUMERICAL ANALYSIS INTENSITY THESES SENSITIVITY TOPOGRAPHY REGIONS BOUNDARIES VERTICAL ORIENTATION CIRCULATION TRAPS GREENLAND STEERING POSITION(LOCATION) MATHEMATICAL MODELS SHEAR PROPERTIES VELOCITY *FRAM STRAIT *STEERED FLOWS EAST GREENLAND CURRENT ICE ZONE JETS WEST SPITZBERGEN CURRENT WATER CIRCULATION |
description |
The Fram Strait is a region of complex circulation and intense dynamical activity. Its general circulation is largely influenced by the East Greenland Current (EGC), the associated Marginal Ice Zone jet, the West Spitzbergen Current (WSC) and the topography of the region. The general circulation was studied using a two-layered numerical model. Forcing of the model was done by varying: the inflow and outflow velocity; the port locations and boundary conditions; and by adjustment of topography. Representative topography of the Fram Strait was modeled in the lower layer. Results indicate that the model is sensitive to EGC width and its proximity to the western boundary; and that in the absence of EGC flow the Return Atlantic Current does not exist. Investigation of model sensitivity to WSC inflow vertical shear lead to the conclusion that when the WSC inflow is 10 cm/sec in the upper layer and 5 cm/sec in the lower layer a boundary trapped component of the WSC is generated. Keywords: Atlantic Ocean; Ocean currents. Theses. |
author2 |
NAVAL POSTGRADUATE SCHOOL MONTEREY CA |
format |
Text |
author |
McShane, David W. |
author_facet |
McShane, David W. |
author_sort |
McShane, David W. |
title |
A Numerical Study of Topographically Steered Flows in the Fram Strait |
title_short |
A Numerical Study of Topographically Steered Flows in the Fram Strait |
title_full |
A Numerical Study of Topographically Steered Flows in the Fram Strait |
title_fullStr |
A Numerical Study of Topographically Steered Flows in the Fram Strait |
title_full_unstemmed |
A Numerical Study of Topographically Steered Flows in the Fram Strait |
title_sort |
numerical study of topographically steered flows in the fram strait |
publishDate |
1989 |
url |
http://www.dtic.mil/docs/citations/ADA212818 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA212818 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
East Greenland east greenland current Fram Strait Greenland Spitzbergen |
genre_facet |
East Greenland east greenland current Fram Strait Greenland Spitzbergen |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/ADA212818 |
op_rights |
Approved for public release; distribution is unlimited. |
_version_ |
1766399331919724544 |