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| Titel |
Ice genesis and its long-term mass balance and dynamics in Scărişoara Ice Cave, Romania |
| VerfasserIn |
A. Perşoiu, A. Pazdur |
| 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 (2011-01-31), S.45-53 |
| Datensatznummer |
250002269
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| Publikation (Nr.) |
 copernicus.org/tc-5-45-2011.pdf |
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| Zusammenfassung |
| The paleoclimatic significance of the perennial ice deposit in Scărişoara
Ice Cave has been remarked on since the early 20th century, but a lack
of understanding of the processes involved in the genesis, age and long-term
dynamics and volume fluctuations of ice hampered all attempts to extract
valuable data on past climate and vegetation changes. In this paper, we
present a model of ice genesis and dynamics, based on stable isotopes, ice
level monitoring (modern and archived) and radiocarbon dating of organic
matter found in the ice. Ice in this cave mostly consists of layers of lake
ice, produced as liquid water freezes from top to bottom in mid-autumn, and
floor ice, produced as inflow water in winter freezes on top of the lake
ice. This mechanism was also acting in the past, during the Medieval Warm
Period and the Little Ice Age. The ice block is not stable in shape and
volume, being continuously modified by ablation on top and sides, basal melting and
lateral flow. Radiocarbon dating shows that the ice block is older than 1000 years, but ice flow and differential basal melting suggesting that the ice
could be much older. |
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