Influence of tides on melting and freezing beneath Filchner-Ronne Ice Shelf, Antarctica
[1] An isopycnic coordinate ocean circulation model is applied to the ocean cavity beneath Filchner‐Ronne Ice Shelf, investigating the role of tides on sub‐ice shelf circulation and ice shelf basal mass balance. Including tidal forcing causes a significant intensification in the sub‐ice shelf circul...
Published in: | Geophysical Research Letters |
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Language: | English |
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American Geophysical Union
2011
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Online Access: | https://nrl.northumbria.ac.uk/id/eprint/46027/ https://doi.org/10.1029/2010GL046462 https://nrl.northumbria.ac.uk/id/eprint/46027/1/2010GL046462.pdf |
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ftunivnorthumb:oai:nrl.northumbria.ac.uk:46027 2023-05-15T13:44:52+02:00 Influence of tides on melting and freezing beneath Filchner-Ronne Ice Shelf, Antarctica Makinson, Keith Holland, Paul R. Jenkins, Adrian Nicholls, Keith W. Holland, David M. 2011-03-01 text https://nrl.northumbria.ac.uk/id/eprint/46027/ https://doi.org/10.1029/2010GL046462 https://nrl.northumbria.ac.uk/id/eprint/46027/1/2010GL046462.pdf en eng American Geophysical Union https://nrl.northumbria.ac.uk/id/eprint/46027/1/2010GL046462.pdf Makinson, Keith, Holland, Paul R., Jenkins, Adrian, Nicholls, Keith W. and Holland, David M. (2011) Influence of tides on melting and freezing beneath Filchner-Ronne Ice Shelf, Antarctica. Geophysical Research Letters, 38 (6). L06601. ISSN 0094-8276 F700 Ocean Sciences F800 Physical and Terrestrial Geographical and Environmental Sciences Article PeerReviewed 2011 ftunivnorthumb https://doi.org/10.1029/2010GL046462 2022-09-25T06:13:44Z [1] An isopycnic coordinate ocean circulation model is applied to the ocean cavity beneath Filchner‐Ronne Ice Shelf, investigating the role of tides on sub‐ice shelf circulation and ice shelf basal mass balance. Including tidal forcing causes a significant intensification in the sub‐ice shelf circulation, with an increase in melting (3‐fold) and refreezing (6‐fold); the net melt rate and seawater flux through the cavity approximately doubles. With tidal forcing, the spatial pattern and magnitude of basal melting and freezing generally match observations. The 0.22 m a−1 net melt rate is close to satellite‐derived estimates and at the lower end of oceanographic values. The Ice Shelf Water outflow mixes with shelf waters, forming a cold (<−1.9°C), dense overflow (0.83 Sv) that spills down the continental slope. These results demonstrate that tidal forcing is fundamental to both ice shelf‐ocean interactions and deep‐water formation in the southern Weddell Sea. Article in Journal/Newspaper Antarc* Antarctica Filchner Ronne Ice Shelf Filchner-Ronne Ice Shelf Ice Shelf Ronne Ice Shelf Weddell Sea Northumbria University, Newcastle: Northumbria Research Link (NRL) Ronne Ice Shelf ENVELOPE(-61.000,-61.000,-78.500,-78.500) Weddell Weddell Sea Geophysical Research Letters 38 6 n/a n/a |
institution |
Open Polar |
collection |
Northumbria University, Newcastle: Northumbria Research Link (NRL) |
op_collection_id |
ftunivnorthumb |
language |
English |
topic |
F700 Ocean Sciences F800 Physical and Terrestrial Geographical and Environmental Sciences |
spellingShingle |
F700 Ocean Sciences F800 Physical and Terrestrial Geographical and Environmental Sciences Makinson, Keith Holland, Paul R. Jenkins, Adrian Nicholls, Keith W. Holland, David M. Influence of tides on melting and freezing beneath Filchner-Ronne Ice Shelf, Antarctica |
topic_facet |
F700 Ocean Sciences F800 Physical and Terrestrial Geographical and Environmental Sciences |
description |
[1] An isopycnic coordinate ocean circulation model is applied to the ocean cavity beneath Filchner‐Ronne Ice Shelf, investigating the role of tides on sub‐ice shelf circulation and ice shelf basal mass balance. Including tidal forcing causes a significant intensification in the sub‐ice shelf circulation, with an increase in melting (3‐fold) and refreezing (6‐fold); the net melt rate and seawater flux through the cavity approximately doubles. With tidal forcing, the spatial pattern and magnitude of basal melting and freezing generally match observations. The 0.22 m a−1 net melt rate is close to satellite‐derived estimates and at the lower end of oceanographic values. The Ice Shelf Water outflow mixes with shelf waters, forming a cold (<−1.9°C), dense overflow (0.83 Sv) that spills down the continental slope. These results demonstrate that tidal forcing is fundamental to both ice shelf‐ocean interactions and deep‐water formation in the southern Weddell Sea. |
format |
Article in Journal/Newspaper |
author |
Makinson, Keith Holland, Paul R. Jenkins, Adrian Nicholls, Keith W. Holland, David M. |
author_facet |
Makinson, Keith Holland, Paul R. Jenkins, Adrian Nicholls, Keith W. Holland, David M. |
author_sort |
Makinson, Keith |
title |
Influence of tides on melting and freezing beneath Filchner-Ronne Ice Shelf, Antarctica |
title_short |
Influence of tides on melting and freezing beneath Filchner-Ronne Ice Shelf, Antarctica |
title_full |
Influence of tides on melting and freezing beneath Filchner-Ronne Ice Shelf, Antarctica |
title_fullStr |
Influence of tides on melting and freezing beneath Filchner-Ronne Ice Shelf, Antarctica |
title_full_unstemmed |
Influence of tides on melting and freezing beneath Filchner-Ronne Ice Shelf, Antarctica |
title_sort |
influence of tides on melting and freezing beneath filchner-ronne ice shelf, antarctica |
publisher |
American Geophysical Union |
publishDate |
2011 |
url |
https://nrl.northumbria.ac.uk/id/eprint/46027/ https://doi.org/10.1029/2010GL046462 https://nrl.northumbria.ac.uk/id/eprint/46027/1/2010GL046462.pdf |
long_lat |
ENVELOPE(-61.000,-61.000,-78.500,-78.500) |
geographic |
Ronne Ice Shelf Weddell Weddell Sea |
geographic_facet |
Ronne Ice Shelf Weddell Weddell Sea |
genre |
Antarc* Antarctica Filchner Ronne Ice Shelf Filchner-Ronne Ice Shelf Ice Shelf Ronne Ice Shelf Weddell Sea |
genre_facet |
Antarc* Antarctica Filchner Ronne Ice Shelf Filchner-Ronne Ice Shelf Ice Shelf Ronne Ice Shelf Weddell Sea |
op_relation |
https://nrl.northumbria.ac.uk/id/eprint/46027/1/2010GL046462.pdf Makinson, Keith, Holland, Paul R., Jenkins, Adrian, Nicholls, Keith W. and Holland, David M. (2011) Influence of tides on melting and freezing beneath Filchner-Ronne Ice Shelf, Antarctica. Geophysical Research Letters, 38 (6). L06601. ISSN 0094-8276 |
op_doi |
https://doi.org/10.1029/2010GL046462 |
container_title |
Geophysical Research Letters |
container_volume |
38 |
container_issue |
6 |
container_start_page |
n/a |
op_container_end_page |
n/a |
_version_ |
1766207868219949056 |