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| Titel |
Glaciochemical investigations of the ice deposit of Vukušić Ice Cave, Velebit Mountain, Croatia |
| VerfasserIn |
Z. Kern, E. Széles, N. Horvatinčić, I. Fórizs, N. Bočić, B. Nagy |
| 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. 2 ; Nr. 5, no. 2 (2011-06-06), S.485-494 |
| Datensatznummer |
250002438
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| Publikation (Nr.) |
 copernicus.org/tc-5-485-2011.pdf |
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| Zusammenfassung |
| The 3H activity and the concentration of 23 metals and metalloids have
been analysed in cave ice samples from the perennial cave ice deposit of
Vukušić Ice Cave, Velebit Mt., Croatia. The results of tritium
measurements exclude a secular age for the upper 2.4 m of ice deposition,
and provide clear arguments that the sampled ice sequence consists of frozen
post-1950 precipitation. Measured concentrations of most of the analysed
elements have largely surmounted reported concentrations of similar elements
from local precipitation or Alpine snow/firn/ice records, whereas three
metals (Cr, Cu, Pb) show concentrations comparable to them. Principal
component analysis was used to select three groups of elements. The
Ca-Mg-governed group (PC1) encompasses the bedrock-related components; their
fluctuation might thus reflect the past intensity of dissolution in the
epikarst. PC2, with the most characteristic elements being Na, Cr and Pb,
probably preserved an atmospheric depositional signal. PC3 is governed by Al
and Fe. This probably carries the distal, non-karstic crustal signal and
hence might be related to atmospheric circulation (i.e., wind direction and
speed). |
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