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| Titel |
Detailed ice loss pattern in the northern Antarctic Peninsula: widespread decline driven by ice front retreats |
| VerfasserIn |
T. A. Scambos, E. Berthier, T. Haran, C. A. Shuman, A. J. Cook, S. R. M. Ligtenberg, J. Bohlander |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1994-0416
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| Digitales Dokument |
URL |
| Erschienen |
In: The Cryosphere ; 8, no. 6 ; Nr. 8, no. 6 (2014-11-24), S.2135-2145 |
| Datensatznummer |
250116380
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| Publikation (Nr.) |
 copernicus.org/tc-8-2135-2014.pdf |
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| Zusammenfassung |
| The northern Antarctic Peninsula (nAP, < 66° S) is one of
the most rapidly changing glaciated regions on earth, yet the spatial
patterns of its ice mass loss at the glacier basin scale have to date been
poorly documented. We use satellite laser altimetry and satellite
stereo-image topography spanning 2001–2010, but primarily 2003–2008, to map
ice elevation change and infer mass changes for 33 glacier basins covering
the mainland and most large islands in the nAP. Rates of ice volume and ice
mass change are 27.7± 8.6 km3 a−1 and 24.9± 7.8 Gt a−1,
equal to −0.73 m a−1 w.e. for the study area. Mass loss is
the highest for eastern glaciers affected by major ice shelf collapses in 1995
and 2002, where twelve glaciers account for 60% of the total imbalance.
However, losses at smaller rates occur throughout the nAP, at both high and
low elevation, despite increased snow accumulation along the western coast
and ridge crest. We interpret the widespread mass loss to be driven by
decades of ice front retreats on both sides of the nAP, and extended
throughout the ice sheet due to the propagation of kinematic waves triggered
at the fronts into the interior. |
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