Rapid injection of near-inertial shear into the stratified upper ocean at an Antarctic Circumpolar Current front
The impact on the upper ocean of the passage of a short, intense storm over a Southern Ocean site, in proximity to an Antarctic Circumpolar Current front, is characterized. The storm causes a wind-induced deepening of the mixed layer and generates an inertial current. Immediate post-storm observatio...
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Online Access: | https://eprints.soton.ac.uk/376013/ https://eprints.soton.ac.uk/376013/1/grl52866.pdf |
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ftsouthampton:oai:eprints.soton.ac.uk:376013 2023-08-27T04:04:30+02:00 Rapid injection of near-inertial shear into the stratified upper ocean at an Antarctic Circumpolar Current front Forryan, Alexander Naveira Garabato, Alberto C. Polzin, Kurt L. Waterman, Stephanie 2015-05-16 text https://eprints.soton.ac.uk/376013/ https://eprints.soton.ac.uk/376013/1/grl52866.pdf en English eng https://eprints.soton.ac.uk/376013/1/grl52866.pdf Forryan, Alexander, Naveira Garabato, Alberto C., Polzin, Kurt L. and Waterman, Stephanie (2015) Rapid injection of near-inertial shear into the stratified upper ocean at an Antarctic Circumpolar Current front. Geophysical Research Letters, 42 (9), 3431-3441. (doi:10.1002/2015GL063494 <http://dx.doi.org/10.1002/2015GL063494>). Article PeerReviewed 2015 ftsouthampton https://doi.org/10.1002/2015GL063494 2023-08-03T22:21:02Z The impact on the upper ocean of the passage of a short, intense storm over a Southern Ocean site, in proximity to an Antarctic Circumpolar Current front, is characterized. The storm causes a wind-induced deepening of the mixed layer and generates an inertial current. Immediate post-storm observations indicate a mixed layer extending to approximately 50 m depth. Subsequent measurements show the upper-ocean to have re-stratified, injecting near-inertial shear in stratified waters within 1 day of the storm's passage. This time scale for the development of near-inertial shear is one order of magnitude shorter than that predicted by the ?-dispersion paradigm. The observed rapid changes in upper-ocean stratification point to the existence of an as yet undocumented, efficient mechanism for injection of near-inertial shear into the stratified ocean that is in turn associated with enhanced turbulence and mixing. Article in Journal/Newspaper Antarc* Antarctic Southern Ocean University of Southampton: e-Prints Soton Antarctic Southern Ocean Geophysical Research Letters 42 9 3431 3441 |
institution |
Open Polar |
collection |
University of Southampton: e-Prints Soton |
op_collection_id |
ftsouthampton |
language |
English |
description |
The impact on the upper ocean of the passage of a short, intense storm over a Southern Ocean site, in proximity to an Antarctic Circumpolar Current front, is characterized. The storm causes a wind-induced deepening of the mixed layer and generates an inertial current. Immediate post-storm observations indicate a mixed layer extending to approximately 50 m depth. Subsequent measurements show the upper-ocean to have re-stratified, injecting near-inertial shear in stratified waters within 1 day of the storm's passage. This time scale for the development of near-inertial shear is one order of magnitude shorter than that predicted by the ?-dispersion paradigm. The observed rapid changes in upper-ocean stratification point to the existence of an as yet undocumented, efficient mechanism for injection of near-inertial shear into the stratified ocean that is in turn associated with enhanced turbulence and mixing. |
format |
Article in Journal/Newspaper |
author |
Forryan, Alexander Naveira Garabato, Alberto C. Polzin, Kurt L. Waterman, Stephanie |
spellingShingle |
Forryan, Alexander Naveira Garabato, Alberto C. Polzin, Kurt L. Waterman, Stephanie Rapid injection of near-inertial shear into the stratified upper ocean at an Antarctic Circumpolar Current front |
author_facet |
Forryan, Alexander Naveira Garabato, Alberto C. Polzin, Kurt L. Waterman, Stephanie |
author_sort |
Forryan, Alexander |
title |
Rapid injection of near-inertial shear into the stratified upper ocean at an Antarctic Circumpolar Current front |
title_short |
Rapid injection of near-inertial shear into the stratified upper ocean at an Antarctic Circumpolar Current front |
title_full |
Rapid injection of near-inertial shear into the stratified upper ocean at an Antarctic Circumpolar Current front |
title_fullStr |
Rapid injection of near-inertial shear into the stratified upper ocean at an Antarctic Circumpolar Current front |
title_full_unstemmed |
Rapid injection of near-inertial shear into the stratified upper ocean at an Antarctic Circumpolar Current front |
title_sort |
rapid injection of near-inertial shear into the stratified upper ocean at an antarctic circumpolar current front |
publishDate |
2015 |
url |
https://eprints.soton.ac.uk/376013/ https://eprints.soton.ac.uk/376013/1/grl52866.pdf |
geographic |
Antarctic Southern Ocean |
geographic_facet |
Antarctic Southern Ocean |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_relation |
https://eprints.soton.ac.uk/376013/1/grl52866.pdf Forryan, Alexander, Naveira Garabato, Alberto C., Polzin, Kurt L. and Waterman, Stephanie (2015) Rapid injection of near-inertial shear into the stratified upper ocean at an Antarctic Circumpolar Current front. Geophysical Research Letters, 42 (9), 3431-3441. (doi:10.1002/2015GL063494 <http://dx.doi.org/10.1002/2015GL063494>). |
op_doi |
https://doi.org/10.1002/2015GL063494 |
container_title |
Geophysical Research Letters |
container_volume |
42 |
container_issue |
9 |
container_start_page |
3431 |
op_container_end_page |
3441 |
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1775351746144501760 |