Water mass evolution of the Greenland Sea since late glacial times
Four sediment cores from the central and northern Greenland Sea basin, a crucial area for the renewal of North Atlantic deep water, were analyzed for planktic foraminiferal fauna, planktic and benthic stable oxygen and carbon iso- topes as well as ice-rafted debris to reconstruct the environ- mental...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.832368 2023-05-15T16:26:36+02:00 Water mass evolution of the Greenland Sea since late glacial times Telesiński, Maciej Mateusz Spielhagen, Robert F Bauch, Henning A MEDIAN LATITUDE: 75.148922 * MEDIAN LONGITUDE: -4.997989 * SOUTH-BOUND LATITUDE: 73.249700 * WEST-BOUND LONGITUDE: -8.998300 * NORTH-BOUND LATITUDE: 76.846300 * EAST-BOUND LONGITUDE: 1.339700 * DATE/TIME START: 1990-06-22T00:00:00 * DATE/TIME END: 1990-07-04T00:00:00 2014-05-07 application/zip, 9 datasets https://doi.pangaea.de/10.1594/PANGAEA.832368 https://doi.org/10.1594/PANGAEA.832368 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.832368 https://doi.org/10.1594/PANGAEA.832368 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Telesiński, Maciej Mateusz; Spielhagen, Robert F; Bauch, Henning A (2014): Water mass evolution of the Greenland Sea since late glacial times. Climate of the Past, 10(1), 123-136, https://doi.org/10.5194/cp-10-123-2014 Dataset 2014 ftpangaea https://doi.org/10.1594/PANGAEA.832368 https://doi.org/10.5194/cp-10-123-2014 2023-01-20T07:33:17Z Four sediment cores from the central and northern Greenland Sea basin, a crucial area for the renewal of North Atlantic deep water, were analyzed for planktic foraminiferal fauna, planktic and benthic stable oxygen and carbon iso- topes as well as ice-rafted debris to reconstruct the environ- mental variability in the last 23 kyr. During the Last Glacial Maximum, the Greenland Sea was dominated by cold and sea-ice bearing surface water masses. Meltwater discharges from the surrounding ice sheets affected the area during the deglaciation, influencing the water mass circulation. During the Younger Dryas interval the last major freshwater event occurred in the region. The onset of the Holocene interglacial was marked by an increase in the advection of Atlantic Wa- ter and a rise in sea surface temperatures (SST). Although the thermal maximum was not reached simultaneously across the basin, benthic isotope data indicate that the rate of overturn- ing circulation reached a maximum in the central Greenland Sea around 7ka. After 6-5ka a SST cooling and increas- ing sea-ice cover is noted. Conditions during this so-called "Neoglacial" cooling, however, changed after 3 ka, probably due to enhanced sea-ice expansion, which limited the deep convection. As a result, a well stratified upper water column amplified the warming of the subsurface waters in the central Greenland Sea, which were fed by increased inflow of At- lantic Water from the eastern Nordic Seas. Our data reveal that the Holocene oceanographic conditions in the Green- land Sea did not develop uniformly. These variations were a response to a complex interplay between the Atlantic and Polar water masses, the rate of sea-ice formation and melting and its effect on vertical convection intensity during times of Northern Hemisphere insolation changes. Dataset Greenland Greenland Sea Nordic Seas North Atlantic Deep Water North Atlantic Sea ice PANGAEA - Data Publisher for Earth & Environmental Science Greenland ENVELOPE(-8.998300,1.339700,76.846300,73.249700) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
description |
Four sediment cores from the central and northern Greenland Sea basin, a crucial area for the renewal of North Atlantic deep water, were analyzed for planktic foraminiferal fauna, planktic and benthic stable oxygen and carbon iso- topes as well as ice-rafted debris to reconstruct the environ- mental variability in the last 23 kyr. During the Last Glacial Maximum, the Greenland Sea was dominated by cold and sea-ice bearing surface water masses. Meltwater discharges from the surrounding ice sheets affected the area during the deglaciation, influencing the water mass circulation. During the Younger Dryas interval the last major freshwater event occurred in the region. The onset of the Holocene interglacial was marked by an increase in the advection of Atlantic Wa- ter and a rise in sea surface temperatures (SST). Although the thermal maximum was not reached simultaneously across the basin, benthic isotope data indicate that the rate of overturn- ing circulation reached a maximum in the central Greenland Sea around 7ka. After 6-5ka a SST cooling and increas- ing sea-ice cover is noted. Conditions during this so-called "Neoglacial" cooling, however, changed after 3 ka, probably due to enhanced sea-ice expansion, which limited the deep convection. As a result, a well stratified upper water column amplified the warming of the subsurface waters in the central Greenland Sea, which were fed by increased inflow of At- lantic Water from the eastern Nordic Seas. Our data reveal that the Holocene oceanographic conditions in the Green- land Sea did not develop uniformly. These variations were a response to a complex interplay between the Atlantic and Polar water masses, the rate of sea-ice formation and melting and its effect on vertical convection intensity during times of Northern Hemisphere insolation changes. |
format |
Dataset |
author |
Telesiński, Maciej Mateusz Spielhagen, Robert F Bauch, Henning A |
spellingShingle |
Telesiński, Maciej Mateusz Spielhagen, Robert F Bauch, Henning A Water mass evolution of the Greenland Sea since late glacial times |
author_facet |
Telesiński, Maciej Mateusz Spielhagen, Robert F Bauch, Henning A |
author_sort |
Telesiński, Maciej Mateusz |
title |
Water mass evolution of the Greenland Sea since late glacial times |
title_short |
Water mass evolution of the Greenland Sea since late glacial times |
title_full |
Water mass evolution of the Greenland Sea since late glacial times |
title_fullStr |
Water mass evolution of the Greenland Sea since late glacial times |
title_full_unstemmed |
Water mass evolution of the Greenland Sea since late glacial times |
title_sort |
water mass evolution of the greenland sea since late glacial times |
publisher |
PANGAEA |
publishDate |
2014 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.832368 https://doi.org/10.1594/PANGAEA.832368 |
op_coverage |
MEDIAN LATITUDE: 75.148922 * MEDIAN LONGITUDE: -4.997989 * SOUTH-BOUND LATITUDE: 73.249700 * WEST-BOUND LONGITUDE: -8.998300 * NORTH-BOUND LATITUDE: 76.846300 * EAST-BOUND LONGITUDE: 1.339700 * DATE/TIME START: 1990-06-22T00:00:00 * DATE/TIME END: 1990-07-04T00:00:00 |
long_lat |
ENVELOPE(-8.998300,1.339700,76.846300,73.249700) |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Greenland Sea Nordic Seas North Atlantic Deep Water North Atlantic Sea ice |
genre_facet |
Greenland Greenland Sea Nordic Seas North Atlantic Deep Water North Atlantic Sea ice |
op_source |
Supplement to: Telesiński, Maciej Mateusz; Spielhagen, Robert F; Bauch, Henning A (2014): Water mass evolution of the Greenland Sea since late glacial times. Climate of the Past, 10(1), 123-136, https://doi.org/10.5194/cp-10-123-2014 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.832368 https://doi.org/10.1594/PANGAEA.832368 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.832368 https://doi.org/10.5194/cp-10-123-2014 |
_version_ |
1766015539368427520 |