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| Titel |
The mass and energy balance of ice within the Eisriesenwelt cave, Austria |
| VerfasserIn |
F. Obleitner, Christoph Spötl |
| 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. 1 ; Nr. 5, no. 1 (2011-03-23), S.245-257 |
| Datensatznummer |
250002284
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| Publikation (Nr.) |
 copernicus.org/tc-5-245-2011.pdf |
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| Schlagwörter |
Höhle, Eishöhle, Meteorologie, Glaziologie, Modellierung, Massenbilanz, Energiebilanz, 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 |
Meteorological measurements were performed in a prominent ice cave
(Eisriesenwelt, Austria) during a full annual cycle. The data show the basic
features of a dynamically ventilated cave system with a well distinguished
winter and summer regime.
The calculated energy balance of the cave ice is largely determined by the
input of long-wave radiation originating at the host rock surface. On
average the turbulent fluxes withdraw energy from the surface. This is more
pronounced during winter due to enhanced circulation and lower humidity.
During summer the driving gradients reverse sign and the associated fluxes
provide energy for melt.
About 4 cm of ice were lost at the measurement site during a reference year.
This was due to some sublimation during winter, while the major loss
resulted from melt during summer. Small amounts of accumulation occurred
during spring due to refreezing of seepage water.
These results are largely based on employing a numerical mass and energy
balance model. Sensitivity studies prove reliability of the calculated
energy balance regarding diverse measurement uncertainties and show that the
annual mass balance of the ice strongly depends on cave air temperature
during summer and the availability of seepage water in spring. |
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