Planktonic isotope record and clay mineralogy of sediment core PS2138-1
Improved multiparameter records from the northern Barents Sea margin show two prominent freshwater pulses into the Arctic Ocean during MIS 5 that significantly disturbed the regional oceanic regime and probably affected global climate. Both pulses are associated with major iceberg-rafted debris (IRD...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.736919 2023-05-15T14:24:49+02:00 Planktonic isotope record and clay mineralogy of sediment core PS2138-1 Knies, Jochen Vogt, Christoph LATITUDE: 81.537667 * LONGITUDE: 30.876167 * DATE/TIME START: 1991-07-18T21:03:00 * DATE/TIME END: 1991-07-18T21:03:00 2003-04-20 application/zip, 3 datasets https://doi.pangaea.de/10.1594/PANGAEA.736919 https://doi.org/10.1594/PANGAEA.736919 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.736919 https://doi.org/10.1594/PANGAEA.736919 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Knies, Jochen; Vogt, Christoph (2003): Freshwater pulses in the eastern Arctic Ocean during Saalian and Early Weichselian ice-sheet collapse. Quaternary Research, 60(3), 243-251, https://doi.org/10.1016/j.yqres.2003.07.008 ARK-VIII/2 AWI_Paleo Gravity corer (Kiel type) Paleoenvironmental Reconstructions from Marine Sediments @ AWI Polarstern PS19/112 PS19 EPOS II PS2138-1 Quaternary Environment of the Eurasian North QUEEN SL Svalbard Dataset 2003 ftpangaea https://doi.org/10.1594/PANGAEA.736919 https://doi.org/10.1016/j.yqres.2003.07.008 2023-01-20T07:31:44Z Improved multiparameter records from the northern Barents Sea margin show two prominent freshwater pulses into the Arctic Ocean during MIS 5 that significantly disturbed the regional oceanic regime and probably affected global climate. Both pulses are associated with major iceberg-rafted debris (IRD) events, revealing intensive iceberg/sea ice melting. The older meltwater pulse occurred near the MIS 5/6 boundary (~131,000 yr ago); its ~2000 year duration and high IRD input accompanied by high illite content suggest a collapse of large-scale Saalian Glaciation in the Arctic Ocean. Movement of this meltwater with the Transpolar Drift current into the Fram Strait probably promoted freshening of Nordic Seas surface water, which may have increased sea-ice formation and significantly reduced deep-water formation. A second pulse of freshwater occurred within MIS 5a (~77,000 yr ago); its high smectite content and relatively short duration is possibly consistent with sudden discharge of Early Weichselian ice-dammed lakes in northern Siberia as suggested by terrestrial glacial geologic data. The influence of this MIS 5a meltwater pulse has been observed at a number of sites along the Transpolar Drift, through Fram Strait, and into the Nordic Seas; it may well have been a trigger for the North Atlantic cooling event C20. Dataset Arctic Arctic Arctic Ocean Barents Sea Fram Strait Iceberg* Nordic Seas North Atlantic Sea ice Svalbard Siberia PANGAEA - Data Publisher for Earth & Environmental Science Arctic Arctic Ocean Barents Sea Svalbard ENVELOPE(30.876167,30.876167,81.537667,81.537667) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
ARK-VIII/2 AWI_Paleo Gravity corer (Kiel type) Paleoenvironmental Reconstructions from Marine Sediments @ AWI Polarstern PS19/112 PS19 EPOS II PS2138-1 Quaternary Environment of the Eurasian North QUEEN SL Svalbard |
spellingShingle |
ARK-VIII/2 AWI_Paleo Gravity corer (Kiel type) Paleoenvironmental Reconstructions from Marine Sediments @ AWI Polarstern PS19/112 PS19 EPOS II PS2138-1 Quaternary Environment of the Eurasian North QUEEN SL Svalbard Knies, Jochen Vogt, Christoph Planktonic isotope record and clay mineralogy of sediment core PS2138-1 |
topic_facet |
ARK-VIII/2 AWI_Paleo Gravity corer (Kiel type) Paleoenvironmental Reconstructions from Marine Sediments @ AWI Polarstern PS19/112 PS19 EPOS II PS2138-1 Quaternary Environment of the Eurasian North QUEEN SL Svalbard |
description |
Improved multiparameter records from the northern Barents Sea margin show two prominent freshwater pulses into the Arctic Ocean during MIS 5 that significantly disturbed the regional oceanic regime and probably affected global climate. Both pulses are associated with major iceberg-rafted debris (IRD) events, revealing intensive iceberg/sea ice melting. The older meltwater pulse occurred near the MIS 5/6 boundary (~131,000 yr ago); its ~2000 year duration and high IRD input accompanied by high illite content suggest a collapse of large-scale Saalian Glaciation in the Arctic Ocean. Movement of this meltwater with the Transpolar Drift current into the Fram Strait probably promoted freshening of Nordic Seas surface water, which may have increased sea-ice formation and significantly reduced deep-water formation. A second pulse of freshwater occurred within MIS 5a (~77,000 yr ago); its high smectite content and relatively short duration is possibly consistent with sudden discharge of Early Weichselian ice-dammed lakes in northern Siberia as suggested by terrestrial glacial geologic data. The influence of this MIS 5a meltwater pulse has been observed at a number of sites along the Transpolar Drift, through Fram Strait, and into the Nordic Seas; it may well have been a trigger for the North Atlantic cooling event C20. |
format |
Dataset |
author |
Knies, Jochen Vogt, Christoph |
author_facet |
Knies, Jochen Vogt, Christoph |
author_sort |
Knies, Jochen |
title |
Planktonic isotope record and clay mineralogy of sediment core PS2138-1 |
title_short |
Planktonic isotope record and clay mineralogy of sediment core PS2138-1 |
title_full |
Planktonic isotope record and clay mineralogy of sediment core PS2138-1 |
title_fullStr |
Planktonic isotope record and clay mineralogy of sediment core PS2138-1 |
title_full_unstemmed |
Planktonic isotope record and clay mineralogy of sediment core PS2138-1 |
title_sort |
planktonic isotope record and clay mineralogy of sediment core ps2138-1 |
publisher |
PANGAEA |
publishDate |
2003 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.736919 https://doi.org/10.1594/PANGAEA.736919 |
op_coverage |
LATITUDE: 81.537667 * LONGITUDE: 30.876167 * DATE/TIME START: 1991-07-18T21:03:00 * DATE/TIME END: 1991-07-18T21:03:00 |
long_lat |
ENVELOPE(30.876167,30.876167,81.537667,81.537667) |
geographic |
Arctic Arctic Ocean Barents Sea Svalbard |
geographic_facet |
Arctic Arctic Ocean Barents Sea Svalbard |
genre |
Arctic Arctic Arctic Ocean Barents Sea Fram Strait Iceberg* Nordic Seas North Atlantic Sea ice Svalbard Siberia |
genre_facet |
Arctic Arctic Arctic Ocean Barents Sea Fram Strait Iceberg* Nordic Seas North Atlantic Sea ice Svalbard Siberia |
op_source |
Supplement to: Knies, Jochen; Vogt, Christoph (2003): Freshwater pulses in the eastern Arctic Ocean during Saalian and Early Weichselian ice-sheet collapse. Quaternary Research, 60(3), 243-251, https://doi.org/10.1016/j.yqres.2003.07.008 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.736919 https://doi.org/10.1594/PANGAEA.736919 |
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.736919 https://doi.org/10.1016/j.yqres.2003.07.008 |
_version_ |
1766297274703413248 |