Benthic foraminifera (percentages and fluxes), benthic stable oxygen and carbon isotope and IRD data of sediment core JM07-015
The palaeoceanographic evolution of the SW Svalbard shelf west of Hornsund over the last 14 000 years was reconstructed using benthic foraminiferal assemblages, stable oxygen and carbon isotopes, and grain-size and ice-rafted debris data. The results reveal the complexity of the feedbacks influencin...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.895466 2023-05-15T15:16:51+02:00 Benthic foraminifera (percentages and fluxes), benthic stable oxygen and carbon isotope and IRD data of sediment core JM07-015 Telesiński, Maciej Mateusz Przytarska, Joanna E Sternal, Beata Forwick, Matthias Szczuciński, Witold Łącka, Magdalena Zajączkowski, Marek LATITUDE: 76.894333 * LONGITUDE: 14.686167 2018-10-18 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.895466 https://doi.org/10.1594/PANGAEA.895466 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.895466 https://doi.org/10.1594/PANGAEA.895466 CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Telesiński, Maciej Mateusz; Przytarska, Joanna E; Sternal, Beata; Forwick, Matthias; Szczuciński, Witold; Łącka, Magdalena; Zajączkowski, Marek (2018): Palaeoceanographic evolution of the SW Svalbard shelf over the last 14 000 years. Boreas, 47(2), 410-422, https://doi.org/10.1111/bor.12282 GC Gravity corer JM07-015 Dataset 2018 ftpangaea https://doi.org/10.1594/PANGAEA.895466 https://doi.org/10.1111/bor.12282 2023-01-20T07:34:13Z The palaeoceanographic evolution of the SW Svalbard shelf west of Hornsund over the last 14 000 years was reconstructed using benthic foraminiferal assemblages, stable oxygen and carbon isotopes, and grain-size and ice-rafted debris data. The results reveal the complexity of the feedbacks influencing the shelf environment: the inflow of Atlantic and Arctic waters (AWandArW, respectively), and the influence of sea ice and tidewater glaciers. The inflow of subsurface AW onto the shelf gradually increased with the first major intrusion at the end of the Bølling-Allerød. During the Younger Dryas, the shelf was affected by fresh water originating from sea ice and glacier discharge. Glaciomarine conditions prevailed until the earliest Holocene with the intense deliveries of icebergs and meltwater from retreating glaciers and the occasional penetration of AW onto the shelf. Other major intrusions ofAWoccurred before and after the Preboreal oscillation (early Holocene), which resulted in more dynamic and open-water conditions. Between 10.5 and 9.7 cal. ka BP, the shelf environment transformed from glaciomarine to open marine conditions. Between c. 9.7 and 6.1 cal. ka BP the AW advection reached its maximum, resulting in a highly dynamic and productive environment. At c. 6.1 cal. ka BP, the inflow of AWonto the Svalbard shelf decreased due to the intensification of the Greenland Gyre and the subduction of AW under the sea-ice-bearing ArW. Bioproductivity decreased over the next c. 5500 years. During the Little Ice Age, bioproductivity increased due to favourable conditions in the marginal sea-ice zone despite the effects of cooling. The renewed advection ofAWafter AD 1850 started the climate warming trend observed presently. Our findings show that d18O can be used to reconstruct the dominances of different water-masses and, with some caution, as a proxy for the presence of sea ice in frontal areas over the northwestern Eurasian shelves. Dataset Arctic Foraminifera* glacier glacier Greenland Hornsund Iceberg* Sea ice Svalbard Tidewater PANGAEA - Data Publisher for Earth & Environmental Science Arctic Greenland Hornsund ENVELOPE(15.865,15.865,76.979,76.979) Svalbard ENVELOPE(14.686167,14.686167,76.894333,76.894333) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
GC Gravity corer JM07-015 |
spellingShingle |
GC Gravity corer JM07-015 Telesiński, Maciej Mateusz Przytarska, Joanna E Sternal, Beata Forwick, Matthias Szczuciński, Witold Łącka, Magdalena Zajączkowski, Marek Benthic foraminifera (percentages and fluxes), benthic stable oxygen and carbon isotope and IRD data of sediment core JM07-015 |
topic_facet |
GC Gravity corer JM07-015 |
description |
The palaeoceanographic evolution of the SW Svalbard shelf west of Hornsund over the last 14 000 years was reconstructed using benthic foraminiferal assemblages, stable oxygen and carbon isotopes, and grain-size and ice-rafted debris data. The results reveal the complexity of the feedbacks influencing the shelf environment: the inflow of Atlantic and Arctic waters (AWandArW, respectively), and the influence of sea ice and tidewater glaciers. The inflow of subsurface AW onto the shelf gradually increased with the first major intrusion at the end of the Bølling-Allerød. During the Younger Dryas, the shelf was affected by fresh water originating from sea ice and glacier discharge. Glaciomarine conditions prevailed until the earliest Holocene with the intense deliveries of icebergs and meltwater from retreating glaciers and the occasional penetration of AW onto the shelf. Other major intrusions ofAWoccurred before and after the Preboreal oscillation (early Holocene), which resulted in more dynamic and open-water conditions. Between 10.5 and 9.7 cal. ka BP, the shelf environment transformed from glaciomarine to open marine conditions. Between c. 9.7 and 6.1 cal. ka BP the AW advection reached its maximum, resulting in a highly dynamic and productive environment. At c. 6.1 cal. ka BP, the inflow of AWonto the Svalbard shelf decreased due to the intensification of the Greenland Gyre and the subduction of AW under the sea-ice-bearing ArW. Bioproductivity decreased over the next c. 5500 years. During the Little Ice Age, bioproductivity increased due to favourable conditions in the marginal sea-ice zone despite the effects of cooling. The renewed advection ofAWafter AD 1850 started the climate warming trend observed presently. Our findings show that d18O can be used to reconstruct the dominances of different water-masses and, with some caution, as a proxy for the presence of sea ice in frontal areas over the northwestern Eurasian shelves. |
format |
Dataset |
author |
Telesiński, Maciej Mateusz Przytarska, Joanna E Sternal, Beata Forwick, Matthias Szczuciński, Witold Łącka, Magdalena Zajączkowski, Marek |
author_facet |
Telesiński, Maciej Mateusz Przytarska, Joanna E Sternal, Beata Forwick, Matthias Szczuciński, Witold Łącka, Magdalena Zajączkowski, Marek |
author_sort |
Telesiński, Maciej Mateusz |
title |
Benthic foraminifera (percentages and fluxes), benthic stable oxygen and carbon isotope and IRD data of sediment core JM07-015 |
title_short |
Benthic foraminifera (percentages and fluxes), benthic stable oxygen and carbon isotope and IRD data of sediment core JM07-015 |
title_full |
Benthic foraminifera (percentages and fluxes), benthic stable oxygen and carbon isotope and IRD data of sediment core JM07-015 |
title_fullStr |
Benthic foraminifera (percentages and fluxes), benthic stable oxygen and carbon isotope and IRD data of sediment core JM07-015 |
title_full_unstemmed |
Benthic foraminifera (percentages and fluxes), benthic stable oxygen and carbon isotope and IRD data of sediment core JM07-015 |
title_sort |
benthic foraminifera (percentages and fluxes), benthic stable oxygen and carbon isotope and ird data of sediment core jm07-015 |
publisher |
PANGAEA |
publishDate |
2018 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.895466 https://doi.org/10.1594/PANGAEA.895466 |
op_coverage |
LATITUDE: 76.894333 * LONGITUDE: 14.686167 |
long_lat |
ENVELOPE(15.865,15.865,76.979,76.979) ENVELOPE(14.686167,14.686167,76.894333,76.894333) |
geographic |
Arctic Greenland Hornsund Svalbard |
geographic_facet |
Arctic Greenland Hornsund Svalbard |
genre |
Arctic Foraminifera* glacier glacier Greenland Hornsund Iceberg* Sea ice Svalbard Tidewater |
genre_facet |
Arctic Foraminifera* glacier glacier Greenland Hornsund Iceberg* Sea ice Svalbard Tidewater |
op_source |
Supplement to: Telesiński, Maciej Mateusz; Przytarska, Joanna E; Sternal, Beata; Forwick, Matthias; Szczuciński, Witold; Łącka, Magdalena; Zajączkowski, Marek (2018): Palaeoceanographic evolution of the SW Svalbard shelf over the last 14 000 years. Boreas, 47(2), 410-422, https://doi.org/10.1111/bor.12282 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.895466 https://doi.org/10.1594/PANGAEA.895466 |
op_rights |
CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.895466 https://doi.org/10.1111/bor.12282 |
_version_ |
1766347137554055168 |