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| Titel |
Refined broad-scale sub-glacial morphology of Aurora Subglacial Basin, East Antarctica derived by an ice-dynamics-based interpolation scheme |
| VerfasserIn |
J. L. Roberts, R. C. Warner, D. Young, A. Wright, T. D. Ommen, D. D. Blankenship, M. Siegert, N. W. Young, I. E. Tabacco, A. Forieri, A. Passerini, A. Zirizzotti, M. Frezzotti |
| 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. 3 ; Nr. 5, no. 3 (2011-07-13), S.551-560 |
| Datensatznummer |
250002588
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| Publikation (Nr.) |
 copernicus.org/tc-5-551-2011.pdf |
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| Zusammenfassung |
| Ice thickness data over much of East Antarctica are sparse and
irregularly distributed. This poses difficulties for reconstructing the
homogeneous coverage needed to properly assess underlying sub-glacial
morphology and fundamental geometric constraints on sea level rise. Here
we introduce a new physically-based ice thickness interpolation scheme
and apply this to existing ice thickness data in the Aurora Subglacial
Basin region. The skill and robustness of the new reconstruction is
demonstrated by comparison with new data from the ICECAP project. The
interpolated morphology shows an extensive marine-based ice sheet, with
considerably more area below sea-level than shown by prior studies. It
also shows deep features connecting the coastal grounding zone with the
deepest regions in the interior. This has implications for ice sheet
response to a warming ocean and underscores the importance of obtaining
additional high resolution data in these marginal zones for modelling
ice sheet evolution. |
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