Topographic control of Southern Ocean gyres and the Antarctic Circumpolar Current
The large-scale circulation of the Southern Ocean is determined by the underlying topography. The topography of the Southern Ocean is characterised by a series of ridges and basins. This thesis investigates the role of the submarine ridges in the steering of the Antarctic Circumpolar Current and the...
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University of Southampton
2018
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ftsouthampton:oai:eprints.soton.ac.uk:428707 2023-07-30T03:56:56+02:00 Topographic control of Southern Ocean gyres and the Antarctic Circumpolar Current Patmore, Ryan Declan 2018-07 text https://eprints.soton.ac.uk/428707/ https://eprints.soton.ac.uk/428707/1/Patmore_Ryan_PhD_Thesis_Feb_2019.pdf en English eng University of Southampton https://eprints.soton.ac.uk/428707/1/Patmore_Ryan_PhD_Thesis_Feb_2019.pdf Patmore, Ryan Declan (2018) Topographic control of Southern Ocean gyres and the Antarctic Circumpolar Current. University of Southampton, Doctoral Thesis, 176pp. uos_thesis Thesis NonPeerReviewed 2018 ftsouthampton 2023-07-09T22:28:05Z The large-scale circulation of the Southern Ocean is determined by the underlying topography. The topography of the Southern Ocean is characterised by a series of ridges and basins. This thesis investigates the role of the submarine ridges in the steering of the Antarctic Circumpolar Current and the formation of Southern Ocean gyres. This investigation is carried out through the use of idealised barotropic numerical simulations. Each mechanism has been analysed in terms of both momentum and vorticity. It is shown that the appearance and strength of Southern Ocean gyres are highly dependent on the gradients in topography along their western boundary. Gyres only appear when topographic gradients are sufficiently high along the eastern flank of a meridional ridge. It is also found that the volume transport of the Antarctic Circumpolar Current is dependent on the geometric properties of ridges. The width, meridional asymmetry and meridional alignment of a ridge all affect volume transport. Thesis Antarc* Antarctic Southern Ocean University of Southampton: e-Prints Soton Antarctic Southern Ocean The Antarctic |
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Open Polar |
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University of Southampton: e-Prints Soton |
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ftsouthampton |
language |
English |
description |
The large-scale circulation of the Southern Ocean is determined by the underlying topography. The topography of the Southern Ocean is characterised by a series of ridges and basins. This thesis investigates the role of the submarine ridges in the steering of the Antarctic Circumpolar Current and the formation of Southern Ocean gyres. This investigation is carried out through the use of idealised barotropic numerical simulations. Each mechanism has been analysed in terms of both momentum and vorticity. It is shown that the appearance and strength of Southern Ocean gyres are highly dependent on the gradients in topography along their western boundary. Gyres only appear when topographic gradients are sufficiently high along the eastern flank of a meridional ridge. It is also found that the volume transport of the Antarctic Circumpolar Current is dependent on the geometric properties of ridges. The width, meridional asymmetry and meridional alignment of a ridge all affect volume transport. |
format |
Thesis |
author |
Patmore, Ryan Declan |
spellingShingle |
Patmore, Ryan Declan Topographic control of Southern Ocean gyres and the Antarctic Circumpolar Current |
author_facet |
Patmore, Ryan Declan |
author_sort |
Patmore, Ryan Declan |
title |
Topographic control of Southern Ocean gyres and the Antarctic Circumpolar Current |
title_short |
Topographic control of Southern Ocean gyres and the Antarctic Circumpolar Current |
title_full |
Topographic control of Southern Ocean gyres and the Antarctic Circumpolar Current |
title_fullStr |
Topographic control of Southern Ocean gyres and the Antarctic Circumpolar Current |
title_full_unstemmed |
Topographic control of Southern Ocean gyres and the Antarctic Circumpolar Current |
title_sort |
topographic control of southern ocean gyres and the antarctic circumpolar current |
publisher |
University of Southampton |
publishDate |
2018 |
url |
https://eprints.soton.ac.uk/428707/ https://eprints.soton.ac.uk/428707/1/Patmore_Ryan_PhD_Thesis_Feb_2019.pdf |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_relation |
https://eprints.soton.ac.uk/428707/1/Patmore_Ryan_PhD_Thesis_Feb_2019.pdf Patmore, Ryan Declan (2018) Topographic control of Southern Ocean gyres and the Antarctic Circumpolar Current. University of Southampton, Doctoral Thesis, 176pp. |
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uos_thesis |
_version_ |
1772815194129432576 |