Spatial and temporal evolution of Pine Island Glacier thinning, 1995-2006
We use ERS-2 and ENVISAT satellite radar altimetry to examine spatial and temporal changes in the rate of thinning of the Pine Island Glacier, West Antarctica, during the period 1995 to 2006. We show that the pattern of thinning has both accelerated and spread inland to encompass tributaries flowing...
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ftucl:oai:eprints.ucl.ac.uk.OAI2:141067 2023-12-24T10:11:31+01:00 Spatial and temporal evolution of Pine Island Glacier thinning, 1995-2006 Wingham, DJ Wallis, DW Shepherd, A 2009-09-09 application/pdf https://discovery.ucl.ac.uk/id/eprint/141067/1/2009GL039126.pdf https://discovery.ucl.ac.uk/id/eprint/141067/ eng eng AMER GEOPHYSICAL UNION https://discovery.ucl.ac.uk/id/eprint/141067/1/2009GL039126.pdf https://discovery.ucl.ac.uk/id/eprint/141067/ open Geophysical Research Letters , 36 , Article L17501. (2009) Antarctic ice-sheet sea-level rise West Antarctica Article 2009 ftucl 2023-11-27T13:07:38Z We use ERS-2 and ENVISAT satellite radar altimetry to examine spatial and temporal changes in the rate of thinning of the Pine Island Glacier, West Antarctica, during the period 1995 to 2006. We show that the pattern of thinning has both accelerated and spread inland to encompass tributaries flowing into the central trunk of the glacier. Within the 5,400 km(2) central trunk, the average rate of volume loss quadrupled from 2.6 +/- 0.3 km(3) yr(-1) in 1995 to 10.1 +/- 0.3 km(3) yr(-1) in 2006. The region of lightly grounded ice at the glacier terminus is extending upstream, and the changes inland are consistent with the effects of a prolonged disturbance to the ice flow, such as the effects of ocean- driven melting. If the acceleration continues at its present rate, the main trunk of PIG will be afloat within some 100 years, six times sooner than anticipated. Citation: Wingham, D.J., D.W. Wallis, and A. Shepherd (2009), Spatial and temporal evolution of Pine Island Glacier thinning, 1995-2006, Geophys. Res. Lett., 36, L17501, doi:10.1029/2009GL039126. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ice Sheet Pine Island Pine Island Glacier West Antarctica University College London: UCL Discovery Antarctic Pine Island Glacier ENVELOPE(-101.000,-101.000,-75.000,-75.000) West Antarctica |
institution |
Open Polar |
collection |
University College London: UCL Discovery |
op_collection_id |
ftucl |
language |
English |
topic |
Antarctic ice-sheet sea-level rise West Antarctica |
spellingShingle |
Antarctic ice-sheet sea-level rise West Antarctica Wingham, DJ Wallis, DW Shepherd, A Spatial and temporal evolution of Pine Island Glacier thinning, 1995-2006 |
topic_facet |
Antarctic ice-sheet sea-level rise West Antarctica |
description |
We use ERS-2 and ENVISAT satellite radar altimetry to examine spatial and temporal changes in the rate of thinning of the Pine Island Glacier, West Antarctica, during the period 1995 to 2006. We show that the pattern of thinning has both accelerated and spread inland to encompass tributaries flowing into the central trunk of the glacier. Within the 5,400 km(2) central trunk, the average rate of volume loss quadrupled from 2.6 +/- 0.3 km(3) yr(-1) in 1995 to 10.1 +/- 0.3 km(3) yr(-1) in 2006. The region of lightly grounded ice at the glacier terminus is extending upstream, and the changes inland are consistent with the effects of a prolonged disturbance to the ice flow, such as the effects of ocean- driven melting. If the acceleration continues at its present rate, the main trunk of PIG will be afloat within some 100 years, six times sooner than anticipated. Citation: Wingham, D.J., D.W. Wallis, and A. Shepherd (2009), Spatial and temporal evolution of Pine Island Glacier thinning, 1995-2006, Geophys. Res. Lett., 36, L17501, doi:10.1029/2009GL039126. |
format |
Article in Journal/Newspaper |
author |
Wingham, DJ Wallis, DW Shepherd, A |
author_facet |
Wingham, DJ Wallis, DW Shepherd, A |
author_sort |
Wingham, DJ |
title |
Spatial and temporal evolution of Pine Island Glacier thinning, 1995-2006 |
title_short |
Spatial and temporal evolution of Pine Island Glacier thinning, 1995-2006 |
title_full |
Spatial and temporal evolution of Pine Island Glacier thinning, 1995-2006 |
title_fullStr |
Spatial and temporal evolution of Pine Island Glacier thinning, 1995-2006 |
title_full_unstemmed |
Spatial and temporal evolution of Pine Island Glacier thinning, 1995-2006 |
title_sort |
spatial and temporal evolution of pine island glacier thinning, 1995-2006 |
publisher |
AMER GEOPHYSICAL UNION |
publishDate |
2009 |
url |
https://discovery.ucl.ac.uk/id/eprint/141067/1/2009GL039126.pdf https://discovery.ucl.ac.uk/id/eprint/141067/ |
long_lat |
ENVELOPE(-101.000,-101.000,-75.000,-75.000) |
geographic |
Antarctic Pine Island Glacier West Antarctica |
geographic_facet |
Antarctic Pine Island Glacier West Antarctica |
genre |
Antarc* Antarctic Antarctica Ice Sheet Pine Island Pine Island Glacier West Antarctica |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet Pine Island Pine Island Glacier West Antarctica |
op_source |
Geophysical Research Letters , 36 , Article L17501. (2009) |
op_relation |
https://discovery.ucl.ac.uk/id/eprint/141067/1/2009GL039126.pdf https://discovery.ucl.ac.uk/id/eprint/141067/ |
op_rights |
open |
_version_ |
1786166210142928896 |