Sub-arctic Holocene climatic and oceanographic variability in Stjernsund, northern Norway: evidence from benthic foraminifera and stable isotopes
A high-resolution record, covering 9.3-0.2ka BP, from the sub-arctic Stjernsund (70 degrees N) was studied for benthic foraminiferal faunas and stable isotopes, revealing three informally named main phases during the Holocene. The Early- to Mid-Holocene (9.3-5.0ka BP) was characterized by the strong...
Published in: | Boreas |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2013
|
Subjects: | |
Online Access: | https://biblio.ugent.be/publication/4108631 http://hdl.handle.net/1854/LU-4108631 https://doi.org/10.1111/j.1502-3885.2012.00303.x https://biblio.ugent.be/publication/4108631/file/4108639 |
id |
ftunivgent:oai:archive.ugent.be:4108631 |
---|---|
record_format |
openpolar |
spelling |
ftunivgent:oai:archive.ugent.be:4108631 2023-06-11T04:08:49+02:00 Sub-arctic Holocene climatic and oceanographic variability in Stjernsund, northern Norway: evidence from benthic foraminifera and stable isotopes Joseph, Nina López Correa, Matthias Schönfeld, Joachim Rüggeberg, Andres Freiwald, André 2013 application/pdf https://biblio.ugent.be/publication/4108631 http://hdl.handle.net/1854/LU-4108631 https://doi.org/10.1111/j.1502-3885.2012.00303.x https://biblio.ugent.be/publication/4108631/file/4108639 eng eng https://biblio.ugent.be/publication/4108631 http://hdl.handle.net/1854/LU-4108631 http://dx.doi.org/10.1111/j.1502-3885.2012.00303.x https://biblio.ugent.be/publication/4108631/file/4108639 No license (in copyright) info:eu-repo/semantics/restrictedAccess BOREAS ISSN: 0300-9483 Earth and Environmental Sciences SOUTHWESTERN BARENTS SEA EUROPEAN CONTINENTAL-MARGIN TREE-LINE AREA NORWEGIAN SEA WESTERN NORWAY ATLANTIC WATER PLANKTONIC-FORAMINIFERA THERMAL MAXIMUM OXYGEN-ISOTOPE YOUNGER DRYAS journalArticle info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2013 ftunivgent https://doi.org/10.1111/j.1502-3885.2012.00303.x 2023-05-10T22:34:16Z A high-resolution record, covering 9.3-0.2ka BP, from the sub-arctic Stjernsund (70 degrees N) was studied for benthic foraminiferal faunas and stable isotopes, revealing three informally named main phases during the Holocene. The Early- to Mid-Holocene (9.3-5.0ka BP) was characterized by the strong influence of the North Atlantic Current (NAC), which prevented the reflection of the Holocene Climatic Optimum (HCO) in the bottom-water temperature. During the Mid-Holocene Transition (5.0-2.5ka BP), a turnover of benthic foraminiferal faunas occurred, Atlantic Water species decreased while Arctic-Polar species increased, and the oxygen isotope record showed larger fluctuations. Those variations correspond to a period of global climate change, to spatially more heterogeneous benthic foraminiferal faunas in the Nordic Seas region, and to regionally diverging terrestrial temperatures. The Cool Late Holocene (2.5-0.2ka BP) was characterized by increased abundances of Arctic-Polar species and a steady cooling trend reflected in the oxygen isotopes. In this period, our record differs considerably from those on the SW Barents Sea shelf and locations farther south. Therefore, we argue that regional atmospheric cooling triggered the late Holocene cooling trend. Several cold episodes centred at approximate to 8.3, approximate to 7.8, approximate to 6.5, approximate to 4.9, approximate to 3.9 and approximate to 3.3ka BP were identified from the benthic foraminiferal faunas and the 18O record, which correlated with marine and atmospherically driven proxy records. This suggests that short-term cold events may result from reduced heat advection via the NAC or from colder air temperatures. Article in Journal/Newspaper Arctic Barents Sea Climate change Foraminifera* Nordic Seas north atlantic current North Atlantic Northern Norway Norwegian Sea Planktonic foraminifera Ghent University Academic Bibliography Arctic Barents Sea Norwegian Sea Norway Boreas 42 3 511 531 |
institution |
Open Polar |
collection |
Ghent University Academic Bibliography |
op_collection_id |
ftunivgent |
language |
English |
topic |
Earth and Environmental Sciences SOUTHWESTERN BARENTS SEA EUROPEAN CONTINENTAL-MARGIN TREE-LINE AREA NORWEGIAN SEA WESTERN NORWAY ATLANTIC WATER PLANKTONIC-FORAMINIFERA THERMAL MAXIMUM OXYGEN-ISOTOPE YOUNGER DRYAS |
spellingShingle |
Earth and Environmental Sciences SOUTHWESTERN BARENTS SEA EUROPEAN CONTINENTAL-MARGIN TREE-LINE AREA NORWEGIAN SEA WESTERN NORWAY ATLANTIC WATER PLANKTONIC-FORAMINIFERA THERMAL MAXIMUM OXYGEN-ISOTOPE YOUNGER DRYAS Joseph, Nina López Correa, Matthias Schönfeld, Joachim Rüggeberg, Andres Freiwald, André Sub-arctic Holocene climatic and oceanographic variability in Stjernsund, northern Norway: evidence from benthic foraminifera and stable isotopes |
topic_facet |
Earth and Environmental Sciences SOUTHWESTERN BARENTS SEA EUROPEAN CONTINENTAL-MARGIN TREE-LINE AREA NORWEGIAN SEA WESTERN NORWAY ATLANTIC WATER PLANKTONIC-FORAMINIFERA THERMAL MAXIMUM OXYGEN-ISOTOPE YOUNGER DRYAS |
description |
A high-resolution record, covering 9.3-0.2ka BP, from the sub-arctic Stjernsund (70 degrees N) was studied for benthic foraminiferal faunas and stable isotopes, revealing three informally named main phases during the Holocene. The Early- to Mid-Holocene (9.3-5.0ka BP) was characterized by the strong influence of the North Atlantic Current (NAC), which prevented the reflection of the Holocene Climatic Optimum (HCO) in the bottom-water temperature. During the Mid-Holocene Transition (5.0-2.5ka BP), a turnover of benthic foraminiferal faunas occurred, Atlantic Water species decreased while Arctic-Polar species increased, and the oxygen isotope record showed larger fluctuations. Those variations correspond to a period of global climate change, to spatially more heterogeneous benthic foraminiferal faunas in the Nordic Seas region, and to regionally diverging terrestrial temperatures. The Cool Late Holocene (2.5-0.2ka BP) was characterized by increased abundances of Arctic-Polar species and a steady cooling trend reflected in the oxygen isotopes. In this period, our record differs considerably from those on the SW Barents Sea shelf and locations farther south. Therefore, we argue that regional atmospheric cooling triggered the late Holocene cooling trend. Several cold episodes centred at approximate to 8.3, approximate to 7.8, approximate to 6.5, approximate to 4.9, approximate to 3.9 and approximate to 3.3ka BP were identified from the benthic foraminiferal faunas and the 18O record, which correlated with marine and atmospherically driven proxy records. This suggests that short-term cold events may result from reduced heat advection via the NAC or from colder air temperatures. |
format |
Article in Journal/Newspaper |
author |
Joseph, Nina López Correa, Matthias Schönfeld, Joachim Rüggeberg, Andres Freiwald, André |
author_facet |
Joseph, Nina López Correa, Matthias Schönfeld, Joachim Rüggeberg, Andres Freiwald, André |
author_sort |
Joseph, Nina |
title |
Sub-arctic Holocene climatic and oceanographic variability in Stjernsund, northern Norway: evidence from benthic foraminifera and stable isotopes |
title_short |
Sub-arctic Holocene climatic and oceanographic variability in Stjernsund, northern Norway: evidence from benthic foraminifera and stable isotopes |
title_full |
Sub-arctic Holocene climatic and oceanographic variability in Stjernsund, northern Norway: evidence from benthic foraminifera and stable isotopes |
title_fullStr |
Sub-arctic Holocene climatic and oceanographic variability in Stjernsund, northern Norway: evidence from benthic foraminifera and stable isotopes |
title_full_unstemmed |
Sub-arctic Holocene climatic and oceanographic variability in Stjernsund, northern Norway: evidence from benthic foraminifera and stable isotopes |
title_sort |
sub-arctic holocene climatic and oceanographic variability in stjernsund, northern norway: evidence from benthic foraminifera and stable isotopes |
publishDate |
2013 |
url |
https://biblio.ugent.be/publication/4108631 http://hdl.handle.net/1854/LU-4108631 https://doi.org/10.1111/j.1502-3885.2012.00303.x https://biblio.ugent.be/publication/4108631/file/4108639 |
geographic |
Arctic Barents Sea Norwegian Sea Norway |
geographic_facet |
Arctic Barents Sea Norwegian Sea Norway |
genre |
Arctic Barents Sea Climate change Foraminifera* Nordic Seas north atlantic current North Atlantic Northern Norway Norwegian Sea Planktonic foraminifera |
genre_facet |
Arctic Barents Sea Climate change Foraminifera* Nordic Seas north atlantic current North Atlantic Northern Norway Norwegian Sea Planktonic foraminifera |
op_source |
BOREAS ISSN: 0300-9483 |
op_relation |
https://biblio.ugent.be/publication/4108631 http://hdl.handle.net/1854/LU-4108631 http://dx.doi.org/10.1111/j.1502-3885.2012.00303.x https://biblio.ugent.be/publication/4108631/file/4108639 |
op_rights |
No license (in copyright) info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1111/j.1502-3885.2012.00303.x |
container_title |
Boreas |
container_volume |
42 |
container_issue |
3 |
container_start_page |
511 |
op_container_end_page |
531 |
_version_ |
1768382349568901120 |