Sub-arctic Holocene climatic and oceanographic variability in Stjernsund, northern Norway: evidence from benthic foraminifera and stable isotopes
A high-resolution record, covering 9.3–0.2 ka BP, from the sub-arctic Stjernsund (70°N) was studied for benthic foraminiferal faunas and stable isotopes, revealing three informally named main phases during the Holocene. The Early- to Mid-Holocene (9.3–5.0 ka BP) was characterized by the strong influ...
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Online Access: | https://oceanrep.geomar.de/id/eprint/19264/ https://oceanrep.geomar.de/id/eprint/19264/1/bor303.pdf https://doi.org/10.1111/j.1502-3885.2012.00303.x |
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ftoceanrep:oai:oceanrep.geomar.de:19264 2023-05-15T14:27:03+02:00 Sub-arctic Holocene climatic and oceanographic variability in Stjernsund, northern Norway: evidence from benthic foraminifera and stable isotopes Joseph, Nina López Correa, Matthia Schönfeld, Joachim Rüggeberg, Andres Freiwald, André 2013 text https://oceanrep.geomar.de/id/eprint/19264/ https://oceanrep.geomar.de/id/eprint/19264/1/bor303.pdf https://doi.org/10.1111/j.1502-3885.2012.00303.x en eng Wiley https://oceanrep.geomar.de/id/eprint/19264/1/bor303.pdf Joseph, N., López Correa, M., Schönfeld, J., Rüggeberg, A. and Freiwald, A. (2013) Sub-arctic Holocene climatic and oceanographic variability in Stjernsund, northern Norway: evidence from benthic foraminifera and stable isotopes. Boreas, 42 (3). pp. 511-531. DOI 10.1111/j.1502-3885.2012.00303.x <https://doi.org/10.1111/j.1502-3885.2012.00303.x>. doi:10.1111/j.1502-3885.2012.00303.x info:eu-repo/semantics/restrictedAccess Article PeerReviewed info:eu-repo/semantics/article 2013 ftoceanrep https://doi.org/10.1111/j.1502-3885.2012.00303.x 2023-04-07T15:06:13Z A high-resolution record, covering 9.3–0.2 ka BP, from the sub-arctic Stjernsund (70°N) was studied for benthic foraminiferal faunas and stable isotopes, revealing three informally named main phases during the Holocene. The Early- to Mid-Holocene (9.3–5.0 ka 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 (5.0–2.5 ka 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 (2.5–0.2 ka 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 ∼8.3, ∼7.8, ∼6.5, ∼4.9, ∼3.9 and ∼3.3 ka BP were identified from the benthic foraminiferal faunas and the δ18O 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 Arctic Barents Sea Climate change Foraminifera* Nordic Seas north atlantic current North Atlantic Northern Norway OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Arctic Barents Sea Norway Boreas 42 3 511 531 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
A high-resolution record, covering 9.3–0.2 ka BP, from the sub-arctic Stjernsund (70°N) was studied for benthic foraminiferal faunas and stable isotopes, revealing three informally named main phases during the Holocene. The Early- to Mid-Holocene (9.3–5.0 ka 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 (5.0–2.5 ka 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 (2.5–0.2 ka 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 ∼8.3, ∼7.8, ∼6.5, ∼4.9, ∼3.9 and ∼3.3 ka BP were identified from the benthic foraminiferal faunas and the δ18O 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, Matthia Schönfeld, Joachim Rüggeberg, Andres Freiwald, André |
spellingShingle |
Joseph, Nina López Correa, Matthia Schönfeld, Joachim Rüggeberg, Andres Freiwald, André Sub-arctic Holocene climatic and oceanographic variability in Stjernsund, northern Norway: evidence from benthic foraminifera and stable isotopes |
author_facet |
Joseph, Nina López Correa, Matthia 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 |
publisher |
Wiley |
publishDate |
2013 |
url |
https://oceanrep.geomar.de/id/eprint/19264/ https://oceanrep.geomar.de/id/eprint/19264/1/bor303.pdf https://doi.org/10.1111/j.1502-3885.2012.00303.x |
geographic |
Arctic Barents Sea Norway |
geographic_facet |
Arctic Barents Sea Norway |
genre |
Arctic Arctic Barents Sea Climate change Foraminifera* Nordic Seas north atlantic current North Atlantic Northern Norway |
genre_facet |
Arctic Arctic Barents Sea Climate change Foraminifera* Nordic Seas north atlantic current North Atlantic Northern Norway |
op_relation |
https://oceanrep.geomar.de/id/eprint/19264/1/bor303.pdf Joseph, N., López Correa, M., Schönfeld, J., Rüggeberg, A. and Freiwald, A. (2013) Sub-arctic Holocene climatic and oceanographic variability in Stjernsund, northern Norway: evidence from benthic foraminifera and stable isotopes. Boreas, 42 (3). pp. 511-531. DOI 10.1111/j.1502-3885.2012.00303.x <https://doi.org/10.1111/j.1502-3885.2012.00303.x>. doi:10.1111/j.1502-3885.2012.00303.x |
op_rights |
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_ |
1766300613204770816 |