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| Titel |
Brief Communication: Ikaite (CaCO3·6H2O) discovered in Arctic sea ice |
| VerfasserIn |
G. S. Dieckmann, G. Nehrke, C. Uhlig, J. Göttlicher, S. Gerland, M. A. Granskog, D. N. Thomas |
| 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 ; 4, no. 2 ; Nr. 4, no. 2 (2010-05-28), S.227-230 |
| Datensatznummer |
250001649
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| Publikation (Nr.) |
 copernicus.org/tc-4-227-2010.pdf |
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| Zusammenfassung |
| We report for the first time on the discovery of calcium carbonate crystals
as ikaite (CaCO3·6H2O) in sea ice from the Arctic (Kongsfjorden,
Svalbard) as confirmed by morphology and indirectly by X-ray diffraction as well
as XANES spectroscopy of its amorophous decomposition product.
This finding demonstrates that the precipitation of calcium carbonate during
the freezing of sea ice is not restricted to the Antarctic, where it was
observed for the first time in 2008. This observation is an
important step in the quest to quantify its impact on the sea ice driven
carbon cycle. |
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