Mass Loss of Larsen B Tributary Glaciers (Antarctic Peninsula) Unabated Since 2002
Ice mass loss continues at a high rate among the large glacier tributaries of the Larsen B Ice Shelf following its disintegration in 2002. We evaluate recent mass loss by mapping elevation changes between 2006 and 201011 using differencing of digital elevation models (DEMs). The measurement accuracy...
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ftnasantrs:oai:casi.ntrs.nasa.gov:20140008936 2023-05-15T13:33:56+02:00 Mass Loss of Larsen B Tributary Glaciers (Antarctic Peninsula) Unabated Since 2002 Berthier, Etienne Scambos, Ted Shuman, Christopher A. Unclassified, Unlimited, Publicly available July 2012 application/pdf http://hdl.handle.net/2060/20140008936 unknown Document ID: 20140008936 http://hdl.handle.net/2060/20140008936 Copyright, Distribution under U.S. Government purpose rights CASI Meteorology and Climatology Geosciences (General) Earth Resources and Remote Sensing GSFC-E-DAA-TN9390 Geophysical Research Letters; 39; 13; L13501 2012 ftnasantrs 2019-07-21T00:29:00Z Ice mass loss continues at a high rate among the large glacier tributaries of the Larsen B Ice Shelf following its disintegration in 2002. We evaluate recent mass loss by mapping elevation changes between 2006 and 201011 using differencing of digital elevation models (DEMs). The measurement accuracy of these elevation changes is confirmed by a null test, subtracting DEMs acquired within a few weeks. The overall 2006201011 mass loss rate (9.0 2.1 Gt a-1) is similar to the 2001022006 rate (8.8 1.6 Gt a-1), derived using DEM differencing and laser altimetry. This unchanged overall loss masks a varying pattern of thinning and ice loss for individual glacier basins. On Crane Glacier, the thinning pulse, initially greatest near the calving front, is now broadening and migrating upstream. The largest losses are now observed for the HektoriaGreen glacier basin, having increased by 33 since 2006. Our method has enabled us to resolve large residual uncertainties in the Larsen B sector and confirm its state of ongoing rapid mass loss. Other/Unknown Material Antarc* Antarctic Antarctic Peninsula Crane Glacier Ice Shelf NASA Technical Reports Server (NTRS) Antarctic Antarctic Peninsula Crane Glacier ENVELOPE(-62.714,-62.714,-65.393,-65.393) |
institution |
Open Polar |
collection |
NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
Meteorology and Climatology Geosciences (General) Earth Resources and Remote Sensing |
spellingShingle |
Meteorology and Climatology Geosciences (General) Earth Resources and Remote Sensing Berthier, Etienne Scambos, Ted Shuman, Christopher A. Mass Loss of Larsen B Tributary Glaciers (Antarctic Peninsula) Unabated Since 2002 |
topic_facet |
Meteorology and Climatology Geosciences (General) Earth Resources and Remote Sensing |
description |
Ice mass loss continues at a high rate among the large glacier tributaries of the Larsen B Ice Shelf following its disintegration in 2002. We evaluate recent mass loss by mapping elevation changes between 2006 and 201011 using differencing of digital elevation models (DEMs). The measurement accuracy of these elevation changes is confirmed by a null test, subtracting DEMs acquired within a few weeks. The overall 2006201011 mass loss rate (9.0 2.1 Gt a-1) is similar to the 2001022006 rate (8.8 1.6 Gt a-1), derived using DEM differencing and laser altimetry. This unchanged overall loss masks a varying pattern of thinning and ice loss for individual glacier basins. On Crane Glacier, the thinning pulse, initially greatest near the calving front, is now broadening and migrating upstream. The largest losses are now observed for the HektoriaGreen glacier basin, having increased by 33 since 2006. Our method has enabled us to resolve large residual uncertainties in the Larsen B sector and confirm its state of ongoing rapid mass loss. |
format |
Other/Unknown Material |
author |
Berthier, Etienne Scambos, Ted Shuman, Christopher A. |
author_facet |
Berthier, Etienne Scambos, Ted Shuman, Christopher A. |
author_sort |
Berthier, Etienne |
title |
Mass Loss of Larsen B Tributary Glaciers (Antarctic Peninsula) Unabated Since 2002 |
title_short |
Mass Loss of Larsen B Tributary Glaciers (Antarctic Peninsula) Unabated Since 2002 |
title_full |
Mass Loss of Larsen B Tributary Glaciers (Antarctic Peninsula) Unabated Since 2002 |
title_fullStr |
Mass Loss of Larsen B Tributary Glaciers (Antarctic Peninsula) Unabated Since 2002 |
title_full_unstemmed |
Mass Loss of Larsen B Tributary Glaciers (Antarctic Peninsula) Unabated Since 2002 |
title_sort |
mass loss of larsen b tributary glaciers (antarctic peninsula) unabated since 2002 |
publishDate |
2012 |
url |
http://hdl.handle.net/2060/20140008936 |
op_coverage |
Unclassified, Unlimited, Publicly available |
long_lat |
ENVELOPE(-62.714,-62.714,-65.393,-65.393) |
geographic |
Antarctic Antarctic Peninsula Crane Glacier |
geographic_facet |
Antarctic Antarctic Peninsula Crane Glacier |
genre |
Antarc* Antarctic Antarctic Peninsula Crane Glacier Ice Shelf |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Crane Glacier Ice Shelf |
op_source |
CASI |
op_relation |
Document ID: 20140008936 http://hdl.handle.net/2060/20140008936 |
op_rights |
Copyright, Distribution under U.S. Government purpose rights |
_version_ |
1766047248245850112 |