High-latitude oceanography using the Autosub autonomous underwater vehicle
A combination of measurements from Autosub, an autonomous underwater vehicle, and ship-based instruments are used to describe the oceanographic conditions beneath Fimbul Ice Shelf, Antarctica. The data show an intricate oceanographic regime that is suggestive of variability at seasonal or longer tim...
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ftsouthampton:oai:eprints.soton.ac.uk:63598 2023-07-30T03:58:36+02:00 High-latitude oceanography using the Autosub autonomous underwater vehicle Nicholls, Keith W. Abrahamsen, E. Povl Heywood, Karen J. Stansfield, Kate Osterhus, Svein 2008-09 https://eprints.soton.ac.uk/63598/ http://www.aslo.org/lo/toc/vol_53/issue_5_part_2/2309.pdf unknown Nicholls, Keith W., Abrahamsen, E. Povl, Heywood, Karen J., Stansfield, Kate and Osterhus, Svein (2008) High-latitude oceanography using the Autosub autonomous underwater vehicle. Limnology and Oceanography, 53 (5 Part 2), 2309-2320. Article PeerReviewed 2008 ftsouthampton 2023-07-09T21:03:31Z A combination of measurements from Autosub, an autonomous underwater vehicle, and ship-based instruments are used to describe the oceanographic conditions beneath Fimbul Ice Shelf, Antarctica. The data show an intricate oceanographic regime that is suggestive of variability at seasonal or longer time scales. Results from a numerical model of the flow beneath the ice shelf lend support to a strong seasonal variability, and data from instruments moored beneath the ice shelf show substantial temporal variations. The Autosub data indicate temperatures within the cavity somewhat lower than our model results would suggest; thus, our modeled melt rates (average of 0.85 m yr21) might be overestimates, although they are substantially lower than from previously published model studies (4.9 and 1.9 m yr21). The contribution of ice shelf melt in the freshwater balance of the waters upstream of the climatically important Filchner-Ronne Ice Shelf needs to be reassessed. Article in Journal/Newspaper Antarc* Antarctica Filchner Ronne Ice Shelf Filchner-Ronne Ice Shelf Fimbul Ice Shelf Ice Shelf Ronne Ice Shelf University of Southampton: e-Prints Soton Ronne Ice Shelf ENVELOPE(-61.000,-61.000,-78.500,-78.500) Fimbul Ice Shelf ENVELOPE(-0.500,-0.500,-70.750,-70.750) |
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Open Polar |
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University of Southampton: e-Prints Soton |
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ftsouthampton |
language |
unknown |
description |
A combination of measurements from Autosub, an autonomous underwater vehicle, and ship-based instruments are used to describe the oceanographic conditions beneath Fimbul Ice Shelf, Antarctica. The data show an intricate oceanographic regime that is suggestive of variability at seasonal or longer time scales. Results from a numerical model of the flow beneath the ice shelf lend support to a strong seasonal variability, and data from instruments moored beneath the ice shelf show substantial temporal variations. The Autosub data indicate temperatures within the cavity somewhat lower than our model results would suggest; thus, our modeled melt rates (average of 0.85 m yr21) might be overestimates, although they are substantially lower than from previously published model studies (4.9 and 1.9 m yr21). The contribution of ice shelf melt in the freshwater balance of the waters upstream of the climatically important Filchner-Ronne Ice Shelf needs to be reassessed. |
format |
Article in Journal/Newspaper |
author |
Nicholls, Keith W. Abrahamsen, E. Povl Heywood, Karen J. Stansfield, Kate Osterhus, Svein |
spellingShingle |
Nicholls, Keith W. Abrahamsen, E. Povl Heywood, Karen J. Stansfield, Kate Osterhus, Svein High-latitude oceanography using the Autosub autonomous underwater vehicle |
author_facet |
Nicholls, Keith W. Abrahamsen, E. Povl Heywood, Karen J. Stansfield, Kate Osterhus, Svein |
author_sort |
Nicholls, Keith W. |
title |
High-latitude oceanography using the Autosub autonomous underwater vehicle |
title_short |
High-latitude oceanography using the Autosub autonomous underwater vehicle |
title_full |
High-latitude oceanography using the Autosub autonomous underwater vehicle |
title_fullStr |
High-latitude oceanography using the Autosub autonomous underwater vehicle |
title_full_unstemmed |
High-latitude oceanography using the Autosub autonomous underwater vehicle |
title_sort |
high-latitude oceanography using the autosub autonomous underwater vehicle |
publishDate |
2008 |
url |
https://eprints.soton.ac.uk/63598/ http://www.aslo.org/lo/toc/vol_53/issue_5_part_2/2309.pdf |
long_lat |
ENVELOPE(-61.000,-61.000,-78.500,-78.500) ENVELOPE(-0.500,-0.500,-70.750,-70.750) |
geographic |
Ronne Ice Shelf Fimbul Ice Shelf |
geographic_facet |
Ronne Ice Shelf Fimbul Ice Shelf |
genre |
Antarc* Antarctica Filchner Ronne Ice Shelf Filchner-Ronne Ice Shelf Fimbul Ice Shelf Ice Shelf Ronne Ice Shelf |
genre_facet |
Antarc* Antarctica Filchner Ronne Ice Shelf Filchner-Ronne Ice Shelf Fimbul Ice Shelf Ice Shelf Ronne Ice Shelf |
op_relation |
Nicholls, Keith W., Abrahamsen, E. Povl, Heywood, Karen J., Stansfield, Kate and Osterhus, Svein (2008) High-latitude oceanography using the Autosub autonomous underwater vehicle. Limnology and Oceanography, 53 (5 Part 2), 2309-2320. |
_version_ |
1772821367865999360 |