New oceanographic data from beneath Ronne Ice Shelf, Antarctica
Oceanographic data have been obtained via an access hole made through Ronne Ice Shelf. The site, which is the third in a series of similar studies, lies 17 km west of Korff Ice Rise where 825 m of ice overlies a 485-m deep water column. Measurements included conductivity and temperature profiles, an...
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American Geophysical Union
1997
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Online Access: | http://nora.nerc.ac.uk/id/eprint/514612/ https://doi.org/10.1029/96GL03922 |
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ftnerc:oai:nora.nerc.ac.uk:514612 2023-05-15T13:49:33+02:00 New oceanographic data from beneath Ronne Ice Shelf, Antarctica Nicholls, K.W. Makinson, K. Johnson, M.R. 1997-01 http://nora.nerc.ac.uk/id/eprint/514612/ https://doi.org/10.1029/96GL03922 unknown American Geophysical Union Nicholls, K.W. orcid:0000-0002-2188-4509 Makinson, K. orcid:0000-0002-5791-1767 Johnson, M.R. 1997 New oceanographic data from beneath Ronne Ice Shelf, Antarctica. Geophysical Research Letters, 24 (2). 167-170. https://doi.org/10.1029/96GL03922 <https://doi.org/10.1029/96GL03922> Publication - Article PeerReviewed 1997 ftnerc https://doi.org/10.1029/96GL03922 2023-02-04T19:43:37Z Oceanographic data have been obtained via an access hole made through Ronne Ice Shelf. The site, which is the third in a series of similar studies, lies 17 km west of Korff Ice Rise where 825 m of ice overlies a 485-m deep water column. Measurements included conductivity and temperature profiles, and an instrument mooring was deployed for long-term measurements of currents, temperature and conductivity. At the sea floor there was a 150-m layer of well-mixed water with a potential temperature and salinity of −1.97°C and 34.72. The water cooled and freshened towards the ice-shelf base, ultimately reaching −2.41°C and 34.51. The hydrographic and water current data imply a flow into the deepest part of the sub-ice shelf cavity of about 200,000 m³ s−1 of the deeper, relatively warm water, which would be able to power an average basal melt rate of 0.2 m a−1 for the western portion of Ronne Ice Shelf. Article in Journal/Newspaper Antarc* Antarctica 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) Korff Ice Rise ENVELOPE(-70.000,-70.000,-79.000,-79.000) Geophysical Research Letters 24 2 167 170 |
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Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
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unknown |
description |
Oceanographic data have been obtained via an access hole made through Ronne Ice Shelf. The site, which is the third in a series of similar studies, lies 17 km west of Korff Ice Rise where 825 m of ice overlies a 485-m deep water column. Measurements included conductivity and temperature profiles, and an instrument mooring was deployed for long-term measurements of currents, temperature and conductivity. At the sea floor there was a 150-m layer of well-mixed water with a potential temperature and salinity of −1.97°C and 34.72. The water cooled and freshened towards the ice-shelf base, ultimately reaching −2.41°C and 34.51. The hydrographic and water current data imply a flow into the deepest part of the sub-ice shelf cavity of about 200,000 m³ s−1 of the deeper, relatively warm water, which would be able to power an average basal melt rate of 0.2 m a−1 for the western portion of Ronne Ice Shelf. |
format |
Article in Journal/Newspaper |
author |
Nicholls, K.W. Makinson, K. Johnson, M.R. |
spellingShingle |
Nicholls, K.W. Makinson, K. Johnson, M.R. New oceanographic data from beneath Ronne Ice Shelf, Antarctica |
author_facet |
Nicholls, K.W. Makinson, K. Johnson, M.R. |
author_sort |
Nicholls, K.W. |
title |
New oceanographic data from beneath Ronne Ice Shelf, Antarctica |
title_short |
New oceanographic data from beneath Ronne Ice Shelf, Antarctica |
title_full |
New oceanographic data from beneath Ronne Ice Shelf, Antarctica |
title_fullStr |
New oceanographic data from beneath Ronne Ice Shelf, Antarctica |
title_full_unstemmed |
New oceanographic data from beneath Ronne Ice Shelf, Antarctica |
title_sort |
new oceanographic data from beneath ronne ice shelf, antarctica |
publisher |
American Geophysical Union |
publishDate |
1997 |
url |
http://nora.nerc.ac.uk/id/eprint/514612/ https://doi.org/10.1029/96GL03922 |
long_lat |
ENVELOPE(-61.000,-61.000,-78.500,-78.500) ENVELOPE(-70.000,-70.000,-79.000,-79.000) |
geographic |
Ronne Ice Shelf Korff Ice Rise |
geographic_facet |
Ronne Ice Shelf Korff Ice Rise |
genre |
Antarc* Antarctica Ice Shelf Ronne Ice Shelf |
genre_facet |
Antarc* Antarctica Ice Shelf Ronne Ice Shelf |
op_relation |
Nicholls, K.W. orcid:0000-0002-2188-4509 Makinson, K. orcid:0000-0002-5791-1767 Johnson, M.R. 1997 New oceanographic data from beneath Ronne Ice Shelf, Antarctica. Geophysical Research Letters, 24 (2). 167-170. https://doi.org/10.1029/96GL03922 <https://doi.org/10.1029/96GL03922> |
op_doi |
https://doi.org/10.1029/96GL03922 |
container_title |
Geophysical Research Letters |
container_volume |
24 |
container_issue |
2 |
container_start_page |
167 |
op_container_end_page |
170 |
_version_ |
1766251557010014208 |