Acceleration of Pine Island and Thwaites Glaciers, West Antarctica
Recent satellite investigations revealed that in the 1990s the grounding line of Pine Island and Thwaites Glaciers, West Antarctica, retreated several km, the ice surface on the interior of the basins lowered 10 cm a-1, and Pine Island Glacier thinned 1.6 m a-1. These observations, however, were not...
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2002
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ftnerc:oai:nora.nerc.ac.uk:17401 2023-05-15T13:29:37+02:00 Acceleration of Pine Island and Thwaites Glaciers, West Antarctica Rignot, Eric Vaughan, David G. Schmeltz, Majorie Dupont, Todd MacAyeal, Douglas 2002 http://nora.nerc.ac.uk/id/eprint/17401/ unknown International Glaciological Society Rignot, Eric; Vaughan, David G. orcid:0000-0002-9065-0570 Schmeltz, Majorie; Dupont, Todd; MacAyeal, Douglas. 2002 Acceleration of Pine Island and Thwaites Glaciers, West Antarctica. Annals of Glaciology, 34. 189-194. https://doi.org/10.3189/172756402781817950 <https://doi.org/10.3189/172756402781817950> Publication - Article PeerReviewed 2002 ftnerc https://doi.org/10.3189/172756402781817950 2023-02-04T19:31:05Z Recent satellite investigations revealed that in the 1990s the grounding line of Pine Island and Thwaites Glaciers, West Antarctica, retreated several km, the ice surface on the interior of the basins lowered 10 cm a-1, and Pine Island Glacier thinned 1.6 m a-1. These observations, however, were not sufficient to determine the cause of the changes. Here, we present satellite radar interferometry data that show the thinning and retreat of Pine Island Glacier are caused by an acceleration of ice flow of about 18 ± 2% in 8 years. Thwaites Glacier maintained a nearly constant flow regime at its center, but widened along the sides, and increased its 30 ± 15% mass deficit by another 4% in 4 years. The combined mass loss from both glaciers, if correct, contributes an estimated 0.08 ± 0.03 mm a-1 global sea-level rise in 2000. Article in Journal/Newspaper Annals of Glaciology Antarc* Antarctica Pine Island Pine Island Glacier Thwaites Glacier West Antarctica Natural Environment Research Council: NERC Open Research Archive Pine Island Glacier ENVELOPE(-101.000,-101.000,-75.000,-75.000) Thwaites Glacier ENVELOPE(-106.750,-106.750,-75.500,-75.500) West Antarctica Annals of Glaciology 34 189 194 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
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description |
Recent satellite investigations revealed that in the 1990s the grounding line of Pine Island and Thwaites Glaciers, West Antarctica, retreated several km, the ice surface on the interior of the basins lowered 10 cm a-1, and Pine Island Glacier thinned 1.6 m a-1. These observations, however, were not sufficient to determine the cause of the changes. Here, we present satellite radar interferometry data that show the thinning and retreat of Pine Island Glacier are caused by an acceleration of ice flow of about 18 ± 2% in 8 years. Thwaites Glacier maintained a nearly constant flow regime at its center, but widened along the sides, and increased its 30 ± 15% mass deficit by another 4% in 4 years. The combined mass loss from both glaciers, if correct, contributes an estimated 0.08 ± 0.03 mm a-1 global sea-level rise in 2000. |
format |
Article in Journal/Newspaper |
author |
Rignot, Eric Vaughan, David G. Schmeltz, Majorie Dupont, Todd MacAyeal, Douglas |
spellingShingle |
Rignot, Eric Vaughan, David G. Schmeltz, Majorie Dupont, Todd MacAyeal, Douglas Acceleration of Pine Island and Thwaites Glaciers, West Antarctica |
author_facet |
Rignot, Eric Vaughan, David G. Schmeltz, Majorie Dupont, Todd MacAyeal, Douglas |
author_sort |
Rignot, Eric |
title |
Acceleration of Pine Island and Thwaites Glaciers, West Antarctica |
title_short |
Acceleration of Pine Island and Thwaites Glaciers, West Antarctica |
title_full |
Acceleration of Pine Island and Thwaites Glaciers, West Antarctica |
title_fullStr |
Acceleration of Pine Island and Thwaites Glaciers, West Antarctica |
title_full_unstemmed |
Acceleration of Pine Island and Thwaites Glaciers, West Antarctica |
title_sort |
acceleration of pine island and thwaites glaciers, west antarctica |
publisher |
International Glaciological Society |
publishDate |
2002 |
url |
http://nora.nerc.ac.uk/id/eprint/17401/ |
long_lat |
ENVELOPE(-101.000,-101.000,-75.000,-75.000) ENVELOPE(-106.750,-106.750,-75.500,-75.500) |
geographic |
Pine Island Glacier Thwaites Glacier West Antarctica |
geographic_facet |
Pine Island Glacier Thwaites Glacier West Antarctica |
genre |
Annals of Glaciology Antarc* Antarctica Pine Island Pine Island Glacier Thwaites Glacier West Antarctica |
genre_facet |
Annals of Glaciology Antarc* Antarctica Pine Island Pine Island Glacier Thwaites Glacier West Antarctica |
op_relation |
Rignot, Eric; Vaughan, David G. orcid:0000-0002-9065-0570 Schmeltz, Majorie; Dupont, Todd; MacAyeal, Douglas. 2002 Acceleration of Pine Island and Thwaites Glaciers, West Antarctica. Annals of Glaciology, 34. 189-194. https://doi.org/10.3189/172756402781817950 <https://doi.org/10.3189/172756402781817950> |
op_doi |
https://doi.org/10.3189/172756402781817950 |
container_title |
Annals of Glaciology |
container_volume |
34 |
container_start_page |
189 |
op_container_end_page |
194 |
_version_ |
1766001536949813248 |