High-resolution alkenone sea surface temperature variability on the North Icelandic Shelf: implications for Nordic Seas palaeoclimatic development during the Holocene
The palaeoceanography of the northern Icelandic Shelf for the Holocene period was reconstructed from alkenone indices measured in core JR51-GC35. This contains a continuous record of Holocene sedimentation spanning 0 10.2 cal. kyr BP with a resolution of ~ 20 yr/cm. We have identified a general Holo...
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crsagepubl:10.1177/0959683607073269 2024-09-15T18:07:49+00:00 High-resolution alkenone sea surface temperature variability on the North Icelandic Shelf: implications for Nordic Seas palaeoclimatic development during the Holocene Bendle, James A.P. Rosell-Melé, Antoni 2007 http://dx.doi.org/10.1177/0959683607073269 http://journals.sagepub.com/doi/pdf/10.1177/0959683607073269 en eng SAGE Publications http://journals.sagepub.com/page/policies/text-and-data-mining-license The Holocene volume 17, issue 1, page 9-24 ISSN 0959-6836 1477-0911 journal-article 2007 crsagepubl https://doi.org/10.1177/0959683607073269 2024-09-03T04:20:27Z The palaeoceanography of the northern Icelandic Shelf for the Holocene period was reconstructed from alkenone indices measured in core JR51-GC35. This contains a continuous record of Holocene sedimentation spanning 0 10.2 cal. kyr BP with a resolution of ~ 20 yr/cm. We have identified a general Holocene cooling trend that has superimposed millennial-scale oscillations of >2°C. Their timing is in close agreement with the timing of glacier advances in northern Iceland. For the later half of the Holocene, the alkenone-sea surface temperature (SST) record from JR51-GC35 correlates with proxy data for the strength of NADW formation recorded in cores south of Iceland. This is interpreted as evidence of a close connection existing between north Icelandic sea surface temperatures and the North Atlantic meridonal overturning circulation. The timing of the millennial-scale SST variability in our core off North Iceland is found to be out of phase, or anti-phased, with the SST variability of a record in the eastern Nordic Seas (MD952011). This suggests that the evolution of Holocene climate in the Nordic Seas was more complex than previously proposed; and it is likely to be caused by differential responses of the Irminger and Norwegian Currents and modulated by changes in atmospheric circulation analogous to the North Atlantic Oscillation. Article in Journal/Newspaper glacier Iceland NADW Nordic Seas North Atlantic North Atlantic oscillation SAGE Publications The Holocene 17 1 9 24 |
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English |
description |
The palaeoceanography of the northern Icelandic Shelf for the Holocene period was reconstructed from alkenone indices measured in core JR51-GC35. This contains a continuous record of Holocene sedimentation spanning 0 10.2 cal. kyr BP with a resolution of ~ 20 yr/cm. We have identified a general Holocene cooling trend that has superimposed millennial-scale oscillations of >2°C. Their timing is in close agreement with the timing of glacier advances in northern Iceland. For the later half of the Holocene, the alkenone-sea surface temperature (SST) record from JR51-GC35 correlates with proxy data for the strength of NADW formation recorded in cores south of Iceland. This is interpreted as evidence of a close connection existing between north Icelandic sea surface temperatures and the North Atlantic meridonal overturning circulation. The timing of the millennial-scale SST variability in our core off North Iceland is found to be out of phase, or anti-phased, with the SST variability of a record in the eastern Nordic Seas (MD952011). This suggests that the evolution of Holocene climate in the Nordic Seas was more complex than previously proposed; and it is likely to be caused by differential responses of the Irminger and Norwegian Currents and modulated by changes in atmospheric circulation analogous to the North Atlantic Oscillation. |
format |
Article in Journal/Newspaper |
author |
Bendle, James A.P. Rosell-Melé, Antoni |
spellingShingle |
Bendle, James A.P. Rosell-Melé, Antoni High-resolution alkenone sea surface temperature variability on the North Icelandic Shelf: implications for Nordic Seas palaeoclimatic development during the Holocene |
author_facet |
Bendle, James A.P. Rosell-Melé, Antoni |
author_sort |
Bendle, James A.P. |
title |
High-resolution alkenone sea surface temperature variability on the North Icelandic Shelf: implications for Nordic Seas palaeoclimatic development during the Holocene |
title_short |
High-resolution alkenone sea surface temperature variability on the North Icelandic Shelf: implications for Nordic Seas palaeoclimatic development during the Holocene |
title_full |
High-resolution alkenone sea surface temperature variability on the North Icelandic Shelf: implications for Nordic Seas palaeoclimatic development during the Holocene |
title_fullStr |
High-resolution alkenone sea surface temperature variability on the North Icelandic Shelf: implications for Nordic Seas palaeoclimatic development during the Holocene |
title_full_unstemmed |
High-resolution alkenone sea surface temperature variability on the North Icelandic Shelf: implications for Nordic Seas palaeoclimatic development during the Holocene |
title_sort |
high-resolution alkenone sea surface temperature variability on the north icelandic shelf: implications for nordic seas palaeoclimatic development during the holocene |
publisher |
SAGE Publications |
publishDate |
2007 |
url |
http://dx.doi.org/10.1177/0959683607073269 http://journals.sagepub.com/doi/pdf/10.1177/0959683607073269 |
genre |
glacier Iceland NADW Nordic Seas North Atlantic North Atlantic oscillation |
genre_facet |
glacier Iceland NADW Nordic Seas North Atlantic North Atlantic oscillation |
op_source |
The Holocene volume 17, issue 1, page 9-24 ISSN 0959-6836 1477-0911 |
op_rights |
http://journals.sagepub.com/page/policies/text-and-data-mining-license |
op_doi |
https://doi.org/10.1177/0959683607073269 |
container_title |
The Holocene |
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17 |
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1 |
container_start_page |
9 |
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24 |
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1810445184676134912 |