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| Titel |
Reconstruction of Atlantic water variability during the Holocene in the western Barents Sea |
| VerfasserIn |
D. E. Groot, S. Aagaard-Sørensen, K. Husum |
| 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 ; 10, no. 1 ; Nr. 10, no. 1 (2014-01-10), S.51-62 |
| Datensatznummer |
250116894
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| Publikation (Nr.) |
 copernicus.org/cp-10-51-2014.pdf |
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| Zusammenfassung |
| The gravity core JM09-KA11-GC from 345 m water depth on the western Barents
Sea margin was investigated for down-core distribution patterns of benthic
Foraminifera, stable isotopes, and sedimentological parameters in order to
reconstruct the flow of Atlantic water during the Holocene. The core site is
located below the Atlantic water masses flowing into the Arctic Ocean and
close to the Arctic front. The results show continuous presence of Atlantic
water at the margin throughout the Holocene. During the early Holocene,
(11 500–9800 cal yr BP), bottom water temperatures as calculated by
transfer functions rose by 1.5 °C, likely due to the increased
inflow of Atlantic water, although sea ice was still present at this time.
The transition to the mid-Holocene is characterized by a local shift in
current regime, resulting in a ceased supply of fine-grained material to the
core location. Throughout the mid-Holocene the δ18O values
indicate a slight cooling, thereby following changes in insolation. In the
last 1500 yr, inflow of Atlantic water increased but was interrupted by
periods of increased influence of Arctic water causing periodically colder
and more unstable conditions. |
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