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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American Society of Limnology and Oceanography
2008
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ftnerc:oai:nora.nerc.ac.uk:6912 2023-05-15T14:05:16+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 text http://nora.nerc.ac.uk/id/eprint/6912/ https://nora.nerc.ac.uk/id/eprint/6912/1/2309.pdf http://www.aslo.org/lo/toc/vol_53/issue_5_part_2/2309.pdf en eng American Society of Limnology and Oceanography https://nora.nerc.ac.uk/id/eprint/6912/1/2309.pdf Nicholls, Keith W. orcid:0000-0002-2188-4509 Abrahamsen, E. Povl orcid:0000-0001-5924-5350 Heywood, Karen J.; Stansfield, Kate; Osterhus, Svein. 2008 High-latitude oceanography using the Autosub autonomous underwater vehicle. Limnology and Oceanography, 53 (5, Pt.). 2309-2320. Marine Sciences Glaciology Publication - Article PeerReviewed 2008 ftnerc 2023-02-04T19:24:35Z 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 Natural Environment Research Council: NERC Open Research Archive Ronne Ice Shelf ENVELOPE(-61.000,-61.000,-78.500,-78.500) Fimbul Ice Shelf ENVELOPE(-0.500,-0.500,-70.750,-70.750) |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
topic |
Marine Sciences Glaciology |
spellingShingle |
Marine Sciences Glaciology Nicholls, Keith W. Abrahamsen, E. Povl Heywood, Karen J. Stansfield, Kate Osterhus, Svein High-latitude oceanography using the Autosub autonomous underwater vehicle |
topic_facet |
Marine Sciences Glaciology |
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 |
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 |
publisher |
American Society of Limnology and Oceanography |
publishDate |
2008 |
url |
http://nora.nerc.ac.uk/id/eprint/6912/ https://nora.nerc.ac.uk/id/eprint/6912/1/2309.pdf 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 |
https://nora.nerc.ac.uk/id/eprint/6912/1/2309.pdf Nicholls, Keith W. orcid:0000-0002-2188-4509 Abrahamsen, E. Povl orcid:0000-0001-5924-5350 Heywood, Karen J.; Stansfield, Kate; Osterhus, Svein. 2008 High-latitude oceanography using the Autosub autonomous underwater vehicle. Limnology and Oceanography, 53 (5, Pt.). 2309-2320. |
_version_ |
1766277080652185600 |