Anomalous Ekman Transport Near Kerguelen Island
In this study we use data from 8 velocity profiling floatsto examine the wind driven response of the surface layerof the Southern Ocean north of the Kerguelen Plateauduring 2008. Assuming a constant geostrophic velocity within theupper 200m of the ocean we have identified Ekman-likespirals in 249 pr...
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ftunivtasecite:oai:ecite.utas.edu.au:85209 2023-05-15T18:25:14+02:00 Anomalous Ekman Transport Near Kerguelen Island Roach, CJ Phillips, HE Bindoff, NL Rintoul, SR 2012 http://www.proceedings.com/17862.html http://ecite.utas.edu.au/85209 en eng Australasian Fluid Mechanics Society http://purl.org/au-research/grants/arc/DP0877098 Roach, CJ and Phillips, HE and Bindoff, NL and Rintoul, SR, Anomalous Ekman Transport Near Kerguelen Island, Proceedings of the 18th Australasian Fluid Mechanics Conference, 3-7 December 2012, Australian Maritime College, UTAS, Launceston, pp. 1-4. ISBN 978-0-646-58373-0 (2012) [Refereed Conference Paper] http://ecite.utas.edu.au/85209 Earth Sciences Oceanography Physical Oceanography Refereed Conference Paper PeerReviewed 2012 ftunivtasecite 2019-12-13T21:49:30Z In this study we use data from 8 velocity profiling floatsto examine the wind driven response of the surface layerof the Southern Ocean north of the Kerguelen Plateauduring 2008. Assuming a constant geostrophic velocity within theupper 200m of the ocean we have identified Ekman-likespirals in 249 profiles and in the mean profile.Considering constant geostrophic shear this figureincreased to 455 Ekman spirals. Mean Ekman transport was found to be skewed towardsthe wind, lying at 45 rather than 90 to the left of thewind as expected from steady-state Ekman theory for theSouthern Hemisphere. This downwind transport anomaly was found to displaylittle sensitivity to the presence of geostrophic shear ortransient wind forcing. We suggest that the anomalyresults from the compression‟ observed in the meanspiral, possibly associated with ocean densitystratification. Conference Object Southern Ocean eCite UTAS (University of Tasmania) Kerguelen Kerguelen Island ENVELOPE(69.500,69.500,-49.250,-49.250) Southern Ocean |
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Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Earth Sciences Oceanography Physical Oceanography |
spellingShingle |
Earth Sciences Oceanography Physical Oceanography Roach, CJ Phillips, HE Bindoff, NL Rintoul, SR Anomalous Ekman Transport Near Kerguelen Island |
topic_facet |
Earth Sciences Oceanography Physical Oceanography |
description |
In this study we use data from 8 velocity profiling floatsto examine the wind driven response of the surface layerof the Southern Ocean north of the Kerguelen Plateauduring 2008. Assuming a constant geostrophic velocity within theupper 200m of the ocean we have identified Ekman-likespirals in 249 profiles and in the mean profile.Considering constant geostrophic shear this figureincreased to 455 Ekman spirals. Mean Ekman transport was found to be skewed towardsthe wind, lying at 45 rather than 90 to the left of thewind as expected from steady-state Ekman theory for theSouthern Hemisphere. This downwind transport anomaly was found to displaylittle sensitivity to the presence of geostrophic shear ortransient wind forcing. We suggest that the anomalyresults from the compression‟ observed in the meanspiral, possibly associated with ocean densitystratification. |
format |
Conference Object |
author |
Roach, CJ Phillips, HE Bindoff, NL Rintoul, SR |
author_facet |
Roach, CJ Phillips, HE Bindoff, NL Rintoul, SR |
author_sort |
Roach, CJ |
title |
Anomalous Ekman Transport Near Kerguelen Island |
title_short |
Anomalous Ekman Transport Near Kerguelen Island |
title_full |
Anomalous Ekman Transport Near Kerguelen Island |
title_fullStr |
Anomalous Ekman Transport Near Kerguelen Island |
title_full_unstemmed |
Anomalous Ekman Transport Near Kerguelen Island |
title_sort |
anomalous ekman transport near kerguelen island |
publisher |
Australasian Fluid Mechanics Society |
publishDate |
2012 |
url |
http://www.proceedings.com/17862.html http://ecite.utas.edu.au/85209 |
long_lat |
ENVELOPE(69.500,69.500,-49.250,-49.250) |
geographic |
Kerguelen Kerguelen Island Southern Ocean |
geographic_facet |
Kerguelen Kerguelen Island Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_relation |
http://purl.org/au-research/grants/arc/DP0877098 Roach, CJ and Phillips, HE and Bindoff, NL and Rintoul, SR, Anomalous Ekman Transport Near Kerguelen Island, Proceedings of the 18th Australasian Fluid Mechanics Conference, 3-7 December 2012, Australian Maritime College, UTAS, Launceston, pp. 1-4. ISBN 978-0-646-58373-0 (2012) [Refereed Conference Paper] http://ecite.utas.edu.au/85209 |
_version_ |
1766206547475562496 |