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| Titel |
Linkage of cave-ice changes to weather patterns inside and outside the cave Eisriesenwelt (Tennengebirge, Austria) |
| VerfasserIn |
W. Schöner, G. Weyss, E. Mursch-Radlgruber |
| 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 (2011-08-11), S.603-616 |
| Datensatznummer |
250002592
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| Publikation (Nr.) |
 copernicus.org/tc-5-603-2011.pdf |
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| Schlagwörter |
Höhle, Eishöhle, Naturdenkmal (Höhle), Wetter, Klima, Höhlenklima, Messung, Höhlenforschung, Nördliche Kalkalpen |
| Geograf. Schlagwort |
Österreich, Salzburg, Sankt Johann im Pongau (Bezirk), Eisriesenwelt, Tennengebirge |
| Blattnummer |
94 [Hallein] |
| Blattnummer (UTM) |
3216 [Bischofshofen] |
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| Zusammenfassung |
| The behaviour of perennial ice masses in karst caves in relation to the
outside climate is still not well understood, though a significant potential
of the cave-ice for paleo-climate reconstructions could be expected. This
study investigates the relationship between weather patterns inside and
outside the cave Eisriesenwelt (Austrian Alps) and ice-surface changes
of the ice-covered part of the cave from meteorological observations at
three sites (outside the cave, entrance-near inside and in the middle
section of the cave) including atmospheric and ice surface measurements as
well as an ablation stake network. Whereas ice loss in summer was a general
feature from stake measurements for almost all measurement sites in the cave
in 2007, 2008 and 2009 (values up to −15 cm yr−1), a clear seasonal signal of
ice accumulation (e.g. in spring as expected from theory) was not observed.
It is shown that under recent climate the cave ice mass balance is more
sensitive to winter climate for the inner measurement site and sensitive to
winter and summer climate for the entrance-near site. Observed ice surface
changes can be well explained by cave atmosphere measurements, indicating a
clear annual cycle with weak mass loss in winter due to sublimation, stable
ice conditions in spring until summer (autumn for the inner measurement
site) and significant melt in late summer to autumn (for the entrance-near
site). Interestingly, surface ice melt did not contribute to ablation at the
inner site. It is obvious from the spatial sample of ice surface height
observations that the ice body is currently in rather balanced state, though
the influence of show-cave management on ice mass-balance could not be
clearly quantified (but a significant input on accumulation for some parts
of the cave is rather plausible). |
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