IP25 and Uk'37 proxy records from sediment cores from the subarctic Pacific and the Bering Sea
This study focusses on the last glacial-deglacial-Holocene spatial and temporal variability in sea-ice cover based on organic geochemical analyses of marine sediment cores from the subarctic Pacific and the Bering Sea. By means of the sea ice proxy "IP25/PIP25" and phytoplankton-derived bi...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.887833 2023-05-15T14:24:45+02:00 IP25 and Uk'37 proxy records from sediment cores from the subarctic Pacific and the Bering Sea Méheust, Marie Stein, Ruediger Fahl, Kirsten Gersonde, Rainer MEDIAN LATITUDE: 55.231467 * MEDIAN LONGITUDE: -173.781333 * SOUTH-BOUND LATITUDE: 51.271500 * WEST-BOUND LONGITUDE: 167.699700 * NORTH-BOUND LATITUDE: 60.126700 * EAST-BOUND LONGITUDE: -149.600200 * DATE/TIME START: 2009-07-17T04:01:00 * DATE/TIME END: 2009-08-02T08:30:00 2018-04-03 application/zip, 3 datasets https://doi.pangaea.de/10.1594/PANGAEA.887833 https://doi.org/10.1594/PANGAEA.887833 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.887833 https://doi.org/10.1594/PANGAEA.887833 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Méheust, Marie; Stein, Ruediger; Fahl, Kirsten; Gersonde, Rainer (2018): Sea-ice variability in the subarctic North Pacific and adjacent Bering Sea during the past 25 ka: new insights from IP25 and Uk′37 proxy records. In: O'Cofaigh, C., Kirchner, N., Federov, G., Noormets, R. and de Vernal, A. (Eds.), Arctic environmental change beyond instrumental records, Special PAST Gateways issue of arktos, arktos - The Journal of Arctic Geosciences, 4(1), https://doi.org/10.1007/s41063-018-0043-1 AWI_Paleo Paleoenvironmental Reconstructions from Marine Sediments @ AWI Dataset 2018 ftpangaea https://doi.org/10.1594/PANGAEA.887833 https://doi.org/10.1007/s41063-018-0043-1 2023-01-20T07:34:07Z This study focusses on the last glacial-deglacial-Holocene spatial and temporal variability in sea-ice cover based on organic geochemical analyses of marine sediment cores from the subarctic Pacific and the Bering Sea. By means of the sea ice proxy "IP25/PIP25" and phytoplankton-derived biomarkers (specific sterols and alkenones), we reconstruct the spring sea-ice conditions, (summer) sea-surface temperature (SST) and primary productivity, respectively. The large variability of sea ice was explained by a combination of local and global factors, such as solar insolation, global climate anomalies and sea-level changes controlling the oceanographic circulation and water mass exchange between the subarctic Pacific and the Bering Sea. During the Last Glacial Maximum, extensive sea-ice cover prevailed over large part of the subarctic Pacific and the Bering Sea. The following deglaciation is characterized by a rapid sea-ice advance and retreat. During cold periods (Heinrich Stadial 1 and Younger Dryas) seasonal sea-ice cover generally coincided with low alkenone SSTs and low primary productivity. Conversely, during warmer intervals (Bølling/Allerød, Early Holocene) reduced sea ice or ice-free conditions prevailed in the study area. In the northern Bering Sea continental shelf a late-Early/Mid Holocene shift to marginal sea-ice conditions is in line with the simultaneous wide-spread sea-ice recovery observed in the other Arctic marginal seas and is likely initiated by the lower Northern Hemisphere insolation and surface-water cooling. Dataset Arctic Arctic Bering Sea Phytoplankton Sea ice Subarctic PANGAEA - Data Publisher for Earth & Environmental Science Arctic Bering Sea Pacific ENVELOPE(167.699700,-149.600200,60.126700,51.271500) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
AWI_Paleo Paleoenvironmental Reconstructions from Marine Sediments @ AWI |
spellingShingle |
AWI_Paleo Paleoenvironmental Reconstructions from Marine Sediments @ AWI Méheust, Marie Stein, Ruediger Fahl, Kirsten Gersonde, Rainer IP25 and Uk'37 proxy records from sediment cores from the subarctic Pacific and the Bering Sea |
topic_facet |
AWI_Paleo Paleoenvironmental Reconstructions from Marine Sediments @ AWI |
description |
This study focusses on the last glacial-deglacial-Holocene spatial and temporal variability in sea-ice cover based on organic geochemical analyses of marine sediment cores from the subarctic Pacific and the Bering Sea. By means of the sea ice proxy "IP25/PIP25" and phytoplankton-derived biomarkers (specific sterols and alkenones), we reconstruct the spring sea-ice conditions, (summer) sea-surface temperature (SST) and primary productivity, respectively. The large variability of sea ice was explained by a combination of local and global factors, such as solar insolation, global climate anomalies and sea-level changes controlling the oceanographic circulation and water mass exchange between the subarctic Pacific and the Bering Sea. During the Last Glacial Maximum, extensive sea-ice cover prevailed over large part of the subarctic Pacific and the Bering Sea. The following deglaciation is characterized by a rapid sea-ice advance and retreat. During cold periods (Heinrich Stadial 1 and Younger Dryas) seasonal sea-ice cover generally coincided with low alkenone SSTs and low primary productivity. Conversely, during warmer intervals (Bølling/Allerød, Early Holocene) reduced sea ice or ice-free conditions prevailed in the study area. In the northern Bering Sea continental shelf a late-Early/Mid Holocene shift to marginal sea-ice conditions is in line with the simultaneous wide-spread sea-ice recovery observed in the other Arctic marginal seas and is likely initiated by the lower Northern Hemisphere insolation and surface-water cooling. |
format |
Dataset |
author |
Méheust, Marie Stein, Ruediger Fahl, Kirsten Gersonde, Rainer |
author_facet |
Méheust, Marie Stein, Ruediger Fahl, Kirsten Gersonde, Rainer |
author_sort |
Méheust, Marie |
title |
IP25 and Uk'37 proxy records from sediment cores from the subarctic Pacific and the Bering Sea |
title_short |
IP25 and Uk'37 proxy records from sediment cores from the subarctic Pacific and the Bering Sea |
title_full |
IP25 and Uk'37 proxy records from sediment cores from the subarctic Pacific and the Bering Sea |
title_fullStr |
IP25 and Uk'37 proxy records from sediment cores from the subarctic Pacific and the Bering Sea |
title_full_unstemmed |
IP25 and Uk'37 proxy records from sediment cores from the subarctic Pacific and the Bering Sea |
title_sort |
ip25 and uk'37 proxy records from sediment cores from the subarctic pacific and the bering sea |
publisher |
PANGAEA |
publishDate |
2018 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.887833 https://doi.org/10.1594/PANGAEA.887833 |
op_coverage |
MEDIAN LATITUDE: 55.231467 * MEDIAN LONGITUDE: -173.781333 * SOUTH-BOUND LATITUDE: 51.271500 * WEST-BOUND LONGITUDE: 167.699700 * NORTH-BOUND LATITUDE: 60.126700 * EAST-BOUND LONGITUDE: -149.600200 * DATE/TIME START: 2009-07-17T04:01:00 * DATE/TIME END: 2009-08-02T08:30:00 |
long_lat |
ENVELOPE(167.699700,-149.600200,60.126700,51.271500) |
geographic |
Arctic Bering Sea Pacific |
geographic_facet |
Arctic Bering Sea Pacific |
genre |
Arctic Arctic Bering Sea Phytoplankton Sea ice Subarctic |
genre_facet |
Arctic Arctic Bering Sea Phytoplankton Sea ice Subarctic |
op_source |
Supplement to: Méheust, Marie; Stein, Ruediger; Fahl, Kirsten; Gersonde, Rainer (2018): Sea-ice variability in the subarctic North Pacific and adjacent Bering Sea during the past 25 ka: new insights from IP25 and Uk′37 proxy records. In: O'Cofaigh, C., Kirchner, N., Federov, G., Noormets, R. and de Vernal, A. (Eds.), Arctic environmental change beyond instrumental records, Special PAST Gateways issue of arktos, arktos - The Journal of Arctic Geosciences, 4(1), https://doi.org/10.1007/s41063-018-0043-1 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.887833 https://doi.org/10.1594/PANGAEA.887833 |
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.887833 https://doi.org/10.1007/s41063-018-0043-1 |
_version_ |
1766297221797511168 |