Deep-water renewal in the Skagerrak during the last 1200 years triggered by the North Atlantic Oscillation: evidence from benthic foraminiferal δ8O
Benthic foraminiferal tests of a sediment core from southwestern Skagerrak (northeastern North Sea, 420 m water depth) were investigated for their ratio of stable oxygen isotopes. During modern times sudden drops in temperature and salinity of Skagerrak deep waters point to advection-induced cascade...
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Online Access: | http://dx.doi.org/10.1191/0959683605hl931rp http://journals.sagepub.com/doi/pdf/10.1191/0959683605hl931rp |
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crsagepubl:10.1191/0959683605hl931rp 2023-05-15T17:28:44+02:00 Deep-water renewal in the Skagerrak during the last 1200 years triggered by the North Atlantic Oscillation: evidence from benthic foraminiferal δ8O Brutckner, Sylvia Mackensen, Andreas 2006 http://dx.doi.org/10.1191/0959683605hl931rp http://journals.sagepub.com/doi/pdf/10.1191/0959683605hl931rp en eng SAGE Publications http://journals.sagepub.com/page/policies/text-and-data-mining-license The Holocene volume 16, issue 3, page 331-340 ISSN 0959-6836 1477-0911 Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change journal-article 2006 crsagepubl https://doi.org/10.1191/0959683605hl931rp 2022-08-12T11:32:51Z Benthic foraminiferal tests of a sediment core from southwestern Skagerrak (northeastern North Sea, 420 m water depth) were investigated for their ratio of stable oxygen isotopes. During modern times sudden drops in temperature and salinity of Skagerrak deep waters point to advection-induced cascades of colder and denser central North Sea waters entering the Skagerrak. These temperature drops, which are recorded in benthic foraminiferal tests via the stable oxygen isotopic composition, were used to reconstruct deep-water renewal in the Skagerrak. In a second step we will show that, at least during the last 1200 years, Skagerrak deep-water renewal is triggered by the negative phase of the North Atlantic Oscillation (NAO). The NAO exerts a strong influence on the climate of northwestern Europe. It is currently under debate if the long-term variability of the NAO is capable of influencing Northern Hemisphere climate on long timescales. The data presented here cannot reinforce these speculations. Our data show that most of the ‘Little Ice Age’ was dominated by comparably warm deep-water temperatures. However, we did find extraordinary strong temperature differences between central North Sea waters and North Atlantic water masses during this time interval. Article in Journal/Newspaper North Atlantic North Atlantic oscillation SAGE Publications (via Crossref) The Holocene 16 3 331 340 |
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Open Polar |
collection |
SAGE Publications (via Crossref) |
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crsagepubl |
language |
English |
topic |
Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change |
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Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change Brutckner, Sylvia Mackensen, Andreas Deep-water renewal in the Skagerrak during the last 1200 years triggered by the North Atlantic Oscillation: evidence from benthic foraminiferal δ8O |
topic_facet |
Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change |
description |
Benthic foraminiferal tests of a sediment core from southwestern Skagerrak (northeastern North Sea, 420 m water depth) were investigated for their ratio of stable oxygen isotopes. During modern times sudden drops in temperature and salinity of Skagerrak deep waters point to advection-induced cascades of colder and denser central North Sea waters entering the Skagerrak. These temperature drops, which are recorded in benthic foraminiferal tests via the stable oxygen isotopic composition, were used to reconstruct deep-water renewal in the Skagerrak. In a second step we will show that, at least during the last 1200 years, Skagerrak deep-water renewal is triggered by the negative phase of the North Atlantic Oscillation (NAO). The NAO exerts a strong influence on the climate of northwestern Europe. It is currently under debate if the long-term variability of the NAO is capable of influencing Northern Hemisphere climate on long timescales. The data presented here cannot reinforce these speculations. Our data show that most of the ‘Little Ice Age’ was dominated by comparably warm deep-water temperatures. However, we did find extraordinary strong temperature differences between central North Sea waters and North Atlantic water masses during this time interval. |
format |
Article in Journal/Newspaper |
author |
Brutckner, Sylvia Mackensen, Andreas |
author_facet |
Brutckner, Sylvia Mackensen, Andreas |
author_sort |
Brutckner, Sylvia |
title |
Deep-water renewal in the Skagerrak during the last 1200 years triggered by the North Atlantic Oscillation: evidence from benthic foraminiferal δ8O |
title_short |
Deep-water renewal in the Skagerrak during the last 1200 years triggered by the North Atlantic Oscillation: evidence from benthic foraminiferal δ8O |
title_full |
Deep-water renewal in the Skagerrak during the last 1200 years triggered by the North Atlantic Oscillation: evidence from benthic foraminiferal δ8O |
title_fullStr |
Deep-water renewal in the Skagerrak during the last 1200 years triggered by the North Atlantic Oscillation: evidence from benthic foraminiferal δ8O |
title_full_unstemmed |
Deep-water renewal in the Skagerrak during the last 1200 years triggered by the North Atlantic Oscillation: evidence from benthic foraminiferal δ8O |
title_sort |
deep-water renewal in the skagerrak during the last 1200 years triggered by the north atlantic oscillation: evidence from benthic foraminiferal δ8o |
publisher |
SAGE Publications |
publishDate |
2006 |
url |
http://dx.doi.org/10.1191/0959683605hl931rp http://journals.sagepub.com/doi/pdf/10.1191/0959683605hl931rp |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
The Holocene volume 16, issue 3, page 331-340 ISSN 0959-6836 1477-0911 |
op_rights |
http://journals.sagepub.com/page/policies/text-and-data-mining-license |
op_doi |
https://doi.org/10.1191/0959683605hl931rp |
container_title |
The Holocene |
container_volume |
16 |
container_issue |
3 |
container_start_page |
331 |
op_container_end_page |
340 |
_version_ |
1766121600636157952 |