Localized basal freezing within George VI Ice Shelf, Antarctica
Hobbs Pool is an area of thin ice shelf situated within George VI Ice Shelf, Antarctica. Thicker ice shelf surrounding Hobbs Pool isolates the upper 155 m of the water column from water lying at the same depth else-where under the ice shelf. Summer melt-water lakes drain through crevasses at Hobbs P...
Published in: | Journal of Glaciology |
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International Glaciological Society
1988
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Online Access: | http://nora.nerc.ac.uk/id/eprint/521716/ https://doi.org/10.3189/S0022143000009084 |
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ftnerc:oai:nora.nerc.ac.uk:521716 2023-05-15T13:15:18+02:00 Localized basal freezing within George VI Ice Shelf, Antarctica Pedley, M. Paren, J.G. Potter, J.R. 1988 http://nora.nerc.ac.uk/id/eprint/521716/ https://doi.org/10.3189/S0022143000009084 unknown International Glaciological Society Pedley, M.; Paren, J.G.; Potter, J.R. 1988 Localized basal freezing within George VI Ice Shelf, Antarctica. Journal of Glaciology, 34 (116). 71-77. https://doi.org/10.3189/S0022143000009084 <https://doi.org/10.3189/S0022143000009084> Publication - Article PeerReviewed 1988 ftnerc https://doi.org/10.3189/S0022143000009084 2023-02-04T19:47:31Z Hobbs Pool is an area of thin ice shelf situated within George VI Ice Shelf, Antarctica. Thicker ice shelf surrounding Hobbs Pool isolates the upper 155 m of the water column from water lying at the same depth else-where under the ice shelf. Summer melt-water lakes drain through crevasses at Hobbs Pool forming a 155 m thick layer of low-salinity water close to its freezing point. Colder and more saline water in the lower part of this layer leads to in-situ freezing of fresher water lying above it. Below 155 m depth, the water temperature and salinity are linearly related by basal melting which is observed elsewhere under the ice shelf. The surface ice shows areas of deformation and deposits of subglacial rock debris which may result from upward particle paths in the area. The raising of subglacial rock debris on to the ice surface may provide a mechanism for the transport of erratics across the ice shelf to Alexander Island from the base of Palmer Land glaciers. Article in Journal/Newspaper Alexander Island Antarc* Antarctica Antarctica Journal George VI Ice Shelf Ice Shelf Journal of Glaciology Palmer Land Natural Environment Research Council: NERC Open Research Archive Alexander Island ENVELOPE(-69.895,-69.895,-71.287,-71.287) Hobbs ENVELOPE(-57.500,-57.500,-64.300,-64.300) Palmer Land ENVELOPE(-65.000,-65.000,-71.500,-71.500) George VI Ice Shelf ENVELOPE(-67.840,-67.840,-71.692,-71.692) Hobbs Pool ENVELOPE(-67.567,-67.567,-71.317,-71.317) Journal of Glaciology 34 116 71 77 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
language |
unknown |
description |
Hobbs Pool is an area of thin ice shelf situated within George VI Ice Shelf, Antarctica. Thicker ice shelf surrounding Hobbs Pool isolates the upper 155 m of the water column from water lying at the same depth else-where under the ice shelf. Summer melt-water lakes drain through crevasses at Hobbs Pool forming a 155 m thick layer of low-salinity water close to its freezing point. Colder and more saline water in the lower part of this layer leads to in-situ freezing of fresher water lying above it. Below 155 m depth, the water temperature and salinity are linearly related by basal melting which is observed elsewhere under the ice shelf. The surface ice shows areas of deformation and deposits of subglacial rock debris which may result from upward particle paths in the area. The raising of subglacial rock debris on to the ice surface may provide a mechanism for the transport of erratics across the ice shelf to Alexander Island from the base of Palmer Land glaciers. |
format |
Article in Journal/Newspaper |
author |
Pedley, M. Paren, J.G. Potter, J.R. |
spellingShingle |
Pedley, M. Paren, J.G. Potter, J.R. Localized basal freezing within George VI Ice Shelf, Antarctica |
author_facet |
Pedley, M. Paren, J.G. Potter, J.R. |
author_sort |
Pedley, M. |
title |
Localized basal freezing within George VI Ice Shelf, Antarctica |
title_short |
Localized basal freezing within George VI Ice Shelf, Antarctica |
title_full |
Localized basal freezing within George VI Ice Shelf, Antarctica |
title_fullStr |
Localized basal freezing within George VI Ice Shelf, Antarctica |
title_full_unstemmed |
Localized basal freezing within George VI Ice Shelf, Antarctica |
title_sort |
localized basal freezing within george vi ice shelf, antarctica |
publisher |
International Glaciological Society |
publishDate |
1988 |
url |
http://nora.nerc.ac.uk/id/eprint/521716/ https://doi.org/10.3189/S0022143000009084 |
long_lat |
ENVELOPE(-69.895,-69.895,-71.287,-71.287) ENVELOPE(-57.500,-57.500,-64.300,-64.300) ENVELOPE(-65.000,-65.000,-71.500,-71.500) ENVELOPE(-67.840,-67.840,-71.692,-71.692) ENVELOPE(-67.567,-67.567,-71.317,-71.317) |
geographic |
Alexander Island Hobbs Palmer Land George VI Ice Shelf Hobbs Pool |
geographic_facet |
Alexander Island Hobbs Palmer Land George VI Ice Shelf Hobbs Pool |
genre |
Alexander Island Antarc* Antarctica Antarctica Journal George VI Ice Shelf Ice Shelf Journal of Glaciology Palmer Land |
genre_facet |
Alexander Island Antarc* Antarctica Antarctica Journal George VI Ice Shelf Ice Shelf Journal of Glaciology Palmer Land |
op_relation |
Pedley, M.; Paren, J.G.; Potter, J.R. 1988 Localized basal freezing within George VI Ice Shelf, Antarctica. Journal of Glaciology, 34 (116). 71-77. https://doi.org/10.3189/S0022143000009084 <https://doi.org/10.3189/S0022143000009084> |
op_doi |
https://doi.org/10.3189/S0022143000009084 |
container_title |
Journal of Glaciology |
container_volume |
34 |
container_issue |
116 |
container_start_page |
71 |
op_container_end_page |
77 |
_version_ |
1766267954861703168 |