Glaciological and oceanographic evidence of high melt rates beneath Pine Island Glacier, West Antarctica
Satellite imagery indicates that the floating terminus of Pine Island Glacier has changed little in extent over the past two decades. Data on the velocity and thickness of the glacier reveal that calving of 28 ± 4 Gt a-1 accounts for only half of the ice input near the grounding line. The apparently...
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International Glaciological Society
1997
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Online Access: | http://nora.nerc.ac.uk/id/eprint/514497/ https://www.cambridge.org/core/journals/journal-of-glaciology/article/glaciological-and-oceanographic-evidence-of-high-melt-rates-beneath-pine-island-glacier-west-antarctica/2D437E7DE6546F1A484CAB1463B7AE06 |
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ftnerc:oai:nora.nerc.ac.uk:514497 2023-05-15T13:49:33+02:00 Glaciological and oceanographic evidence of high melt rates beneath Pine Island Glacier, West Antarctica Jenkins, Adrian Vaughan, David G. Jacobs, Stanley S. Hellmer, Hartmut H. Keys, John R. 1997 http://nora.nerc.ac.uk/id/eprint/514497/ https://www.cambridge.org/core/journals/journal-of-glaciology/article/glaciological-and-oceanographic-evidence-of-high-melt-rates-beneath-pine-island-glacier-west-antarctica/2D437E7DE6546F1A484CAB1463B7AE06 unknown International Glaciological Society Jenkins, Adrian orcid:0000-0002-9117-0616 Vaughan, David G. orcid:0000-0002-9065-0570 Jacobs, Stanley S.; Hellmer, Hartmut H.; Keys, John R. 1997 Glaciological and oceanographic evidence of high melt rates beneath Pine Island Glacier, West Antarctica. Journal of Glaciology, 43 (134). 114-121. https://doi.org/10.3189/S0022143000002872 <https://doi.org/10.3189/S0022143000002872> Publication - Article PeerReviewed 1997 ftnerc https://doi.org/10.3189/S0022143000002872 2023-02-04T19:43:33Z Satellite imagery indicates that the floating terminus of Pine Island Glacier has changed little in extent over the past two decades. Data on the velocity and thickness of the glacier reveal that calving of 28 ± 4 Gt a-1 accounts for only half of the ice input near the grounding line. The apparently steady configuration implies that the remainder of the input is lost by basal melting at a mean rate of 12 ± 3 m a-1. Ocean circulation in Pine Island Bay transports +1°C waters beneath the glacier and temperatures recorded in melt-laden outflows show that heat loss from the ocean is consistent with the requirements of the calculated melt rate. The combination of iceberg calving and basal melting lies at the lower end of estimates for the total accumulation over the catchment basin, drawing into question previous estimates of a significantly positive mass budget for this part of the ice sheet. Article in Journal/Newspaper Antarc* Antarctica Antarctica Journal Ice Sheet Journal of Glaciology Pine Island Pine Island Bay Pine Island Glacier West Antarctica Natural Environment Research Council: NERC Open Research Archive West Antarctica Pine Island Glacier ENVELOPE(-101.000,-101.000,-75.000,-75.000) Island Bay ENVELOPE(-109.085,-109.085,59.534,59.534) Pine Island Bay ENVELOPE(-102.000,-102.000,-74.750,-74.750) Journal of Glaciology 43 143 114 121 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
description |
Satellite imagery indicates that the floating terminus of Pine Island Glacier has changed little in extent over the past two decades. Data on the velocity and thickness of the glacier reveal that calving of 28 ± 4 Gt a-1 accounts for only half of the ice input near the grounding line. The apparently steady configuration implies that the remainder of the input is lost by basal melting at a mean rate of 12 ± 3 m a-1. Ocean circulation in Pine Island Bay transports +1°C waters beneath the glacier and temperatures recorded in melt-laden outflows show that heat loss from the ocean is consistent with the requirements of the calculated melt rate. The combination of iceberg calving and basal melting lies at the lower end of estimates for the total accumulation over the catchment basin, drawing into question previous estimates of a significantly positive mass budget for this part of the ice sheet. |
format |
Article in Journal/Newspaper |
author |
Jenkins, Adrian Vaughan, David G. Jacobs, Stanley S. Hellmer, Hartmut H. Keys, John R. |
spellingShingle |
Jenkins, Adrian Vaughan, David G. Jacobs, Stanley S. Hellmer, Hartmut H. Keys, John R. Glaciological and oceanographic evidence of high melt rates beneath Pine Island Glacier, West Antarctica |
author_facet |
Jenkins, Adrian Vaughan, David G. Jacobs, Stanley S. Hellmer, Hartmut H. Keys, John R. |
author_sort |
Jenkins, Adrian |
title |
Glaciological and oceanographic evidence of high melt rates beneath Pine Island Glacier, West Antarctica |
title_short |
Glaciological and oceanographic evidence of high melt rates beneath Pine Island Glacier, West Antarctica |
title_full |
Glaciological and oceanographic evidence of high melt rates beneath Pine Island Glacier, West Antarctica |
title_fullStr |
Glaciological and oceanographic evidence of high melt rates beneath Pine Island Glacier, West Antarctica |
title_full_unstemmed |
Glaciological and oceanographic evidence of high melt rates beneath Pine Island Glacier, West Antarctica |
title_sort |
glaciological and oceanographic evidence of high melt rates beneath pine island glacier, west antarctica |
publisher |
International Glaciological Society |
publishDate |
1997 |
url |
http://nora.nerc.ac.uk/id/eprint/514497/ https://www.cambridge.org/core/journals/journal-of-glaciology/article/glaciological-and-oceanographic-evidence-of-high-melt-rates-beneath-pine-island-glacier-west-antarctica/2D437E7DE6546F1A484CAB1463B7AE06 |
long_lat |
ENVELOPE(-101.000,-101.000,-75.000,-75.000) ENVELOPE(-109.085,-109.085,59.534,59.534) ENVELOPE(-102.000,-102.000,-74.750,-74.750) |
geographic |
West Antarctica Pine Island Glacier Island Bay Pine Island Bay |
geographic_facet |
West Antarctica Pine Island Glacier Island Bay Pine Island Bay |
genre |
Antarc* Antarctica Antarctica Journal Ice Sheet Journal of Glaciology Pine Island Pine Island Bay Pine Island Glacier West Antarctica |
genre_facet |
Antarc* Antarctica Antarctica Journal Ice Sheet Journal of Glaciology Pine Island Pine Island Bay Pine Island Glacier West Antarctica |
op_relation |
Jenkins, Adrian orcid:0000-0002-9117-0616 Vaughan, David G. orcid:0000-0002-9065-0570 Jacobs, Stanley S.; Hellmer, Hartmut H.; Keys, John R. 1997 Glaciological and oceanographic evidence of high melt rates beneath Pine Island Glacier, West Antarctica. Journal of Glaciology, 43 (134). 114-121. https://doi.org/10.3189/S0022143000002872 <https://doi.org/10.3189/S0022143000002872> |
op_doi |
https://doi.org/10.3189/S0022143000002872 |
container_title |
Journal of Glaciology |
container_volume |
43 |
container_issue |
143 |
container_start_page |
114 |
op_container_end_page |
121 |
_version_ |
1766251550704926720 |