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| Titel |
Spatial and temporal variability of snow accumulation rate on the East Antarctic ice divide between Dome Fuji and EPICA DML |
| VerfasserIn |
S. Fujita, P. Holmlund, I. Andersson, I. Brown, H. Enomoto, Y. Fujii, K. Fujita, K. Fukui, T. Furukawa, M. Hansson, K. Hara, Y. Hoshina, M. Igarashi, Y. Iizuka, S. Imura, S. Ingvander, T. Karlin, H. Motoyama, F. Nakazawa, H. Oerter, L. E. Sjöberg, S. Sugiyama, S. Surdyk, J. Ström, R. Uemura, F. Wilhelms |
| 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 ; 5, no. 4 ; Nr. 5, no. 4 (2011-11-28), S.1057-1081 |
| Datensatznummer |
250002759
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| Publikation (Nr.) |
 copernicus.org/tc-5-1057-2011.pdf |
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| Zusammenfassung |
| To better understand the spatio-temporal variability of the glaciological
environment in Dronning Maud Land (DML), East Antarctica, a 2800-km-long
Japanese-Swedish traverse was carried out. The route includes ice divides between two
ice-coring sites at Dome Fuji and EPICA DML. We determined the surface mass balance (SMB)
averaged over various time
scales in the late Holocene based on studies of snow pits and firn cores, in addition to
radar data. We find that the large-scale distribution of the SMB depends on the surface
elevation and continentality, and that the SMB differs between the windward and leeward
sides of ice divides for strong-wind events. We suggest that the SMB is highly
influenced by interactions between the large-scale surface topography of ice divides and
the wind field of strong-wind events that are often associated with high-precipitation
events. Local variations in the SMB are governed by the local surface topography, which
is influenced by the bedrock topography. In the eastern part of DML, the accumulation
rate in the second half of the 20th century is found to be higher by ~15 % than
averages over longer periods of 722 a or 7.9 ka before AD 2008. A similar increasing
trend has been reported for many inland plateau sites in Antarctica with the exception
of several sites on the leeward side of the ice divides. |
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