Mass balance measurements on King George Island ice cap in 2007 and 2008
The Antarctic Peninsula has been identified as a region of rapid on-going climate change with impacts on the cryosphere. The knowledge of glacial changes and freshwater budgets resulting from intensified glacier melt is an important boundary condition for many biological and integrated earth system...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.773308 2024-09-15T17:46:01+00:00 Mass balance measurements on King George Island ice cap in 2007 and 2008 Rückamp, Martin Braun, Matthias Holger Suckro, Sonja K Blindow, Norbert MEDIAN LATITUDE: -62.068374 * MEDIAN LONGITUDE: -58.510997 * SOUTH-BOUND LATITUDE: -62.139620 * WEST-BOUND LONGITUDE: -58.765030 * NORTH-BOUND LATITUDE: -61.973930 * EAST-BOUND LONGITUDE: -58.241760 * DATE/TIME START: 2007-01-01T00:00:00 * DATE/TIME END: 2008-01-01T00:00:00 * MINIMUM ELEVATION: 390 m a.s.l. * MAXIMUM ELEVATION: 691 m a.s.l. 2011 text/tab-separated-values, 124 data points https://doi.pangaea.de/10.1594/PANGAEA.773308 https://doi.org/10.1594/PANGAEA.773308 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.773308 https://doi.org/10.1594/PANGAEA.773308 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Rückamp, Martin; Braun, Matthias Holger; Suckro, Sonja K; Blindow, Norbert (2011): Observed glacial changes on the King George Island ice cap, Antarctica, in the last decade. Global and Planetary Change, 79(1-2), 99-109, https://doi.org/10.1016/j.gloplacha.2011.06.009 DATE/TIME ELEVATION King_George_Island King George Island Antarctic Peninsula LATITUDE LONGITUDE Mass balance in water equivalent per year Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158 UTM Easting Universal Transverse Mercator UTM Northing UTM Zone dataset 2011 ftpangaea https://doi.org/10.1594/PANGAEA.77330810.1016/j.gloplacha.2011.06.009 2024-07-24T02:31:31Z The Antarctic Peninsula has been identified as a region of rapid on-going climate change with impacts on the cryosphere. The knowledge of glacial changes and freshwater budgets resulting from intensified glacier melt is an important boundary condition for many biological and integrated earth system science approaches. We provide a case study on glacier and mass balance changes for the ice cap of King George Island. The area loss between 2000 and 2008 amounted to about 20 km**2 (about 1.6% of the island area) and compares to glacier retreat rates observed in previous years. Measured net accumulation rates for two years (2007 and 2008) show a strong interannual variability with maximum net accumulation rates of 4950 mm w.e./a and 3184 mm w.e./a, respectively. These net accumulation rates are at least 4 times higher than reported mean values (1926-95) from an ice core. An elevation dependent precipitation rate of 343 mm w.e./a (2007) and 432 mm w.e./a (2008) per 100 m elevation increase was observed. Despite these rather high net accumulation rates on the main ice cap, consistent surface lowering was observed at elevations below 270 m above ellipsoid over an 11-year period. These DGPS records reveal a linear dependence of surface lowering with altitude with a maximum annual surface lowering rate of 1.44 m/a at 40 m and -0.20 m/a at 270 m above ellipsoid. These results fit well to observations by other authors and surface lowering rates derived from the ICESat laser altimeter. Assuming that climate conditions of the past 11 years continue, the small ice cap of Bellingshausen Dome will disappear in about 285 years. Dataset Antarc* Antarctic Antarctic Peninsula Climate change Ice cap ice core King George Island Sea ice PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-58.765030,-58.241760,-61.973930,-62.139620) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
DATE/TIME ELEVATION King_George_Island King George Island Antarctic Peninsula LATITUDE LONGITUDE Mass balance in water equivalent per year Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158 UTM Easting Universal Transverse Mercator UTM Northing UTM Zone |
spellingShingle |
DATE/TIME ELEVATION King_George_Island King George Island Antarctic Peninsula LATITUDE LONGITUDE Mass balance in water equivalent per year Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158 UTM Easting Universal Transverse Mercator UTM Northing UTM Zone Rückamp, Martin Braun, Matthias Holger Suckro, Sonja K Blindow, Norbert Mass balance measurements on King George Island ice cap in 2007 and 2008 |
topic_facet |
DATE/TIME ELEVATION King_George_Island King George Island Antarctic Peninsula LATITUDE LONGITUDE Mass balance in water equivalent per year Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158 UTM Easting Universal Transverse Mercator UTM Northing UTM Zone |
description |
The Antarctic Peninsula has been identified as a region of rapid on-going climate change with impacts on the cryosphere. The knowledge of glacial changes and freshwater budgets resulting from intensified glacier melt is an important boundary condition for many biological and integrated earth system science approaches. We provide a case study on glacier and mass balance changes for the ice cap of King George Island. The area loss between 2000 and 2008 amounted to about 20 km**2 (about 1.6% of the island area) and compares to glacier retreat rates observed in previous years. Measured net accumulation rates for two years (2007 and 2008) show a strong interannual variability with maximum net accumulation rates of 4950 mm w.e./a and 3184 mm w.e./a, respectively. These net accumulation rates are at least 4 times higher than reported mean values (1926-95) from an ice core. An elevation dependent precipitation rate of 343 mm w.e./a (2007) and 432 mm w.e./a (2008) per 100 m elevation increase was observed. Despite these rather high net accumulation rates on the main ice cap, consistent surface lowering was observed at elevations below 270 m above ellipsoid over an 11-year period. These DGPS records reveal a linear dependence of surface lowering with altitude with a maximum annual surface lowering rate of 1.44 m/a at 40 m and -0.20 m/a at 270 m above ellipsoid. These results fit well to observations by other authors and surface lowering rates derived from the ICESat laser altimeter. Assuming that climate conditions of the past 11 years continue, the small ice cap of Bellingshausen Dome will disappear in about 285 years. |
format |
Dataset |
author |
Rückamp, Martin Braun, Matthias Holger Suckro, Sonja K Blindow, Norbert |
author_facet |
Rückamp, Martin Braun, Matthias Holger Suckro, Sonja K Blindow, Norbert |
author_sort |
Rückamp, Martin |
title |
Mass balance measurements on King George Island ice cap in 2007 and 2008 |
title_short |
Mass balance measurements on King George Island ice cap in 2007 and 2008 |
title_full |
Mass balance measurements on King George Island ice cap in 2007 and 2008 |
title_fullStr |
Mass balance measurements on King George Island ice cap in 2007 and 2008 |
title_full_unstemmed |
Mass balance measurements on King George Island ice cap in 2007 and 2008 |
title_sort |
mass balance measurements on king george island ice cap in 2007 and 2008 |
publisher |
PANGAEA |
publishDate |
2011 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.773308 https://doi.org/10.1594/PANGAEA.773308 |
op_coverage |
MEDIAN LATITUDE: -62.068374 * MEDIAN LONGITUDE: -58.510997 * SOUTH-BOUND LATITUDE: -62.139620 * WEST-BOUND LONGITUDE: -58.765030 * NORTH-BOUND LATITUDE: -61.973930 * EAST-BOUND LONGITUDE: -58.241760 * DATE/TIME START: 2007-01-01T00:00:00 * DATE/TIME END: 2008-01-01T00:00:00 * MINIMUM ELEVATION: 390 m a.s.l. * MAXIMUM ELEVATION: 691 m a.s.l. |
long_lat |
ENVELOPE(-58.765030,-58.241760,-61.973930,-62.139620) |
genre |
Antarc* Antarctic Antarctic Peninsula Climate change Ice cap ice core King George Island Sea ice |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Climate change Ice cap ice core King George Island Sea ice |
op_source |
Supplement to: Rückamp, Martin; Braun, Matthias Holger; Suckro, Sonja K; Blindow, Norbert (2011): Observed glacial changes on the King George Island ice cap, Antarctica, in the last decade. Global and Planetary Change, 79(1-2), 99-109, https://doi.org/10.1016/j.gloplacha.2011.06.009 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.773308 https://doi.org/10.1594/PANGAEA.773308 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.77330810.1016/j.gloplacha.2011.06.009 |
_version_ |
1810493980370010112 |