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| Titel |
Late Weichselian and Holocene palaeoceanography of Storfjordrenna, southern Svalbard |
| VerfasserIn |
M. Łącka, M. Zajączkowski, M. Forwick, W. Szczuciński |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1814-9324
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| Digitales Dokument |
URL |
| Erschienen |
In: Climate of the Past ; 11, no. 3 ; Nr. 11, no. 3 (2015-03-27), S.587-603 |
| Datensatznummer |
250117218
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| Publikation (Nr.) |
 copernicus.org/cp-11-587-2015.pdf |
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| Zusammenfassung |
| Multiproxy analyses (including benthic and planktonic foraminifera, δ18O and δ13C records, grain-size distribution, ice-rafted
debris, XRF geochemistry and magnetic susceptibility) were performed on a
14C-dated marine sediment core from Storfjordrenna, located off of
southern Svalbard. The sediments in the core cover the termination of
Bølling–Allerød, the Younger Dryas and the Holocene and reflect
general changes in the oceanography/climate of the European Arctic after the
last glaciation. Grounded ice of the last Svalbard–Barents Sea Ice Sheet
retreated from the coring site ca. 13 950 cal yr BP. During the
transition from the subglacial to glaciomarine setting, Arctic Waters
dominated the hydrography in Storfjordrenna. However, the waters were not
uniformly cold and experienced several warmer spells. A progressive warming
and marked change in the nature of the hydrology occurred during the early
Holocene. Relatively warm and saline Atlantic Water began to dominate the
hydrography starting from approximately 9600 cal yr BP. Although the
climate in eastern Svalbard was milder at that time than at present (smaller
glaciers), two periods of slight cooling were observed in 9000–8000 and
6000–5500 cal yr BP. A change in the Storfjordrenna oceanography occurred
at the beginning of the late Holocene (i.e. 3600 cal yr BP) synchronously
with glacier growth on land and enhanced bottom current velocities. Although
cooling was observed in the Surface Water, Atlantic Water remained present in
the deeper portion of the water column of Storfjordrenna. |
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