Foraminifer, diatom frustules, and total organic carbon of sediment cores EMB046_6-5GC, EMB046_10-4GC, and EMB046_20-3GC in the Norwegian Trench and the Skagerrak
To detect climatic linkages between the Baltic Sea, the Skagerrak and the Nordic Seas, we present multi‐proxy reconstructions covering the last 4500 years from three sediment cores taken in the Skagerrak and along the SW Norwegian margin. Foraminiferal assemblages at all three sites show a distinct...
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2017
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.874853 2024-09-15T18:20:31+00:00 Foraminifer, diatom frustules, and total organic carbon of sediment cores EMB046_6-5GC, EMB046_10-4GC, and EMB046_20-3GC in the Norwegian Trench and the Skagerrak Polovodova Asteman, Irina Risebrobakken, Bjørg Moros, Matthias Binczewska, Anna Dobosz, Slawomir Jansen, Eystein Slawinska, Joanna Bak, Malgorzata MEDIAN LATITUDE: 59.092390 * MEDIAN LONGITUDE: 6.831330 * SOUTH-BOUND LATITUDE: 57.828830 * WEST-BOUND LONGITUDE: 3.714830 * NORTH-BOUND LATITUDE: 60.919170 * EAST-BOUND LONGITUDE: 9.485500 * DATE/TIME START: 2013-05-24T00:00:00 * DATE/TIME END: 2013-05-29T00:00:00 2017 application/zip, 9 datasets https://doi.pangaea.de/10.1594/PANGAEA.874853 https://doi.org/10.1594/PANGAEA.874853 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.874853 https://doi.org/10.1594/PANGAEA.874853 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Polovodova Asteman, Irina; Risebrobakken, Bjørg; Moros, Matthias; Binczewska, Anna; Dobosz, Slawomir; Jansen, Eystein; Slawinska, Joanna; Bak, Malgorzata (2018): Late Holocene palaeoproductivity changes: a multi-proxy study in the Norwegian Trench and the Skagerrak, North Sea. Boreas, 47(1), 238-255, https://doi.org/10.1111/bor.12264 dataset publication series 2017 ftpangaea https://doi.org/10.1594/PANGAEA.87485310.1111/bor.12264 2024-07-24T02:31:21Z To detect climatic linkages between the Baltic Sea, the Skagerrak and the Nordic Seas, we present multi‐proxy reconstructions covering the last 4500 years from three sediment cores taken in the Skagerrak and along the SW Norwegian margin. Foraminiferal assemblages at all three sites show a distinct change at c. 1700 years BP, associated with a transition from absence and rare occurrence of Brizalina skagerrakensis during c. 4500–2300 years BP to its subsequent abundance increase, suggesting a stronger influence of nutrient‐rich water‐masses during the last c. 1700 years. Increased nutrient availability, which probably stimulated higher primary productivity, is further supported by an increase in diatoms, total organic carbon and benthic foraminiferal species indicative of high productivity and carbon fluxes during the last c. 1700 years as compared to c. 4500–2300 years BP. The amplitude of the B. skagerrakensis signal is largest in the central Skagerrak and gradually becomes smaller towards the Norwegian Sea suggesting that the dominant source of the nutrient‐rich water was the brackish outflow from the Baltic Sea. The generally lower abundances of planktonic foraminifera since c. 1700 years BP support the hypothesis of less saline surface water conditions in the Skagerrak. These results agree with other studies, which suggest a stronger Baltic outflow over the last 1700 years coinciding with a general cooling, increased wintertime westerlies bringing more winter precipitation to northern Europe, increased river runoff and higher frequency of floods. The increase in outflow also occurs during deposition of laminated sediments in the deep Baltic Sea. Leakage of dissolved inorganic phosphorus from anoxic sediments, as well as enhanced erosion due to deforestation in combination with higher runoff from Norway, coastal upwelling and more vigorous frontal dynamics may all have contributed to higher nutrient availability within the adjacent Skagerrak during the last 1700 years BP as compared to c. 4500–2300 years BP, ... Other/Unknown Material Nordic Seas Norwegian Sea Planktonic foraminifera PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(3.714830,9.485500,60.919170,57.828830) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
description |
To detect climatic linkages between the Baltic Sea, the Skagerrak and the Nordic Seas, we present multi‐proxy reconstructions covering the last 4500 years from three sediment cores taken in the Skagerrak and along the SW Norwegian margin. Foraminiferal assemblages at all three sites show a distinct change at c. 1700 years BP, associated with a transition from absence and rare occurrence of Brizalina skagerrakensis during c. 4500–2300 years BP to its subsequent abundance increase, suggesting a stronger influence of nutrient‐rich water‐masses during the last c. 1700 years. Increased nutrient availability, which probably stimulated higher primary productivity, is further supported by an increase in diatoms, total organic carbon and benthic foraminiferal species indicative of high productivity and carbon fluxes during the last c. 1700 years as compared to c. 4500–2300 years BP. The amplitude of the B. skagerrakensis signal is largest in the central Skagerrak and gradually becomes smaller towards the Norwegian Sea suggesting that the dominant source of the nutrient‐rich water was the brackish outflow from the Baltic Sea. The generally lower abundances of planktonic foraminifera since c. 1700 years BP support the hypothesis of less saline surface water conditions in the Skagerrak. These results agree with other studies, which suggest a stronger Baltic outflow over the last 1700 years coinciding with a general cooling, increased wintertime westerlies bringing more winter precipitation to northern Europe, increased river runoff and higher frequency of floods. The increase in outflow also occurs during deposition of laminated sediments in the deep Baltic Sea. Leakage of dissolved inorganic phosphorus from anoxic sediments, as well as enhanced erosion due to deforestation in combination with higher runoff from Norway, coastal upwelling and more vigorous frontal dynamics may all have contributed to higher nutrient availability within the adjacent Skagerrak during the last 1700 years BP as compared to c. 4500–2300 years BP, ... |
format |
Other/Unknown Material |
author |
Polovodova Asteman, Irina Risebrobakken, Bjørg Moros, Matthias Binczewska, Anna Dobosz, Slawomir Jansen, Eystein Slawinska, Joanna Bak, Malgorzata |
spellingShingle |
Polovodova Asteman, Irina Risebrobakken, Bjørg Moros, Matthias Binczewska, Anna Dobosz, Slawomir Jansen, Eystein Slawinska, Joanna Bak, Malgorzata Foraminifer, diatom frustules, and total organic carbon of sediment cores EMB046_6-5GC, EMB046_10-4GC, and EMB046_20-3GC in the Norwegian Trench and the Skagerrak |
author_facet |
Polovodova Asteman, Irina Risebrobakken, Bjørg Moros, Matthias Binczewska, Anna Dobosz, Slawomir Jansen, Eystein Slawinska, Joanna Bak, Malgorzata |
author_sort |
Polovodova Asteman, Irina |
title |
Foraminifer, diatom frustules, and total organic carbon of sediment cores EMB046_6-5GC, EMB046_10-4GC, and EMB046_20-3GC in the Norwegian Trench and the Skagerrak |
title_short |
Foraminifer, diatom frustules, and total organic carbon of sediment cores EMB046_6-5GC, EMB046_10-4GC, and EMB046_20-3GC in the Norwegian Trench and the Skagerrak |
title_full |
Foraminifer, diatom frustules, and total organic carbon of sediment cores EMB046_6-5GC, EMB046_10-4GC, and EMB046_20-3GC in the Norwegian Trench and the Skagerrak |
title_fullStr |
Foraminifer, diatom frustules, and total organic carbon of sediment cores EMB046_6-5GC, EMB046_10-4GC, and EMB046_20-3GC in the Norwegian Trench and the Skagerrak |
title_full_unstemmed |
Foraminifer, diatom frustules, and total organic carbon of sediment cores EMB046_6-5GC, EMB046_10-4GC, and EMB046_20-3GC in the Norwegian Trench and the Skagerrak |
title_sort |
foraminifer, diatom frustules, and total organic carbon of sediment cores emb046_6-5gc, emb046_10-4gc, and emb046_20-3gc in the norwegian trench and the skagerrak |
publisher |
PANGAEA |
publishDate |
2017 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.874853 https://doi.org/10.1594/PANGAEA.874853 |
op_coverage |
MEDIAN LATITUDE: 59.092390 * MEDIAN LONGITUDE: 6.831330 * SOUTH-BOUND LATITUDE: 57.828830 * WEST-BOUND LONGITUDE: 3.714830 * NORTH-BOUND LATITUDE: 60.919170 * EAST-BOUND LONGITUDE: 9.485500 * DATE/TIME START: 2013-05-24T00:00:00 * DATE/TIME END: 2013-05-29T00:00:00 |
long_lat |
ENVELOPE(3.714830,9.485500,60.919170,57.828830) |
genre |
Nordic Seas Norwegian Sea Planktonic foraminifera |
genre_facet |
Nordic Seas Norwegian Sea Planktonic foraminifera |
op_source |
Supplement to: Polovodova Asteman, Irina; Risebrobakken, Bjørg; Moros, Matthias; Binczewska, Anna; Dobosz, Slawomir; Jansen, Eystein; Slawinska, Joanna; Bak, Malgorzata (2018): Late Holocene palaeoproductivity changes: a multi-proxy study in the Norwegian Trench and the Skagerrak, North Sea. Boreas, 47(1), 238-255, https://doi.org/10.1111/bor.12264 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.874853 https://doi.org/10.1594/PANGAEA.874853 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.87485310.1111/bor.12264 |
_version_ |
1810458894536802304 |