Diatom and hydrocarbon analysis of sediment core NBP00-03-JPC38
In this study, we present a unique high-resolution Holocene record of oceanographic and climatic change based on analyses of diatom assemblages combined with biomarker data from a sediment core collected from the Vega Drift, eastern Antarctic Peninsula (EAP). These data add to the climate framework...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.858524 2023-05-15T13:44:47+02:00 Diatom and hydrocarbon analysis of sediment core NBP00-03-JPC38 Barbara, Loïc Crosta, Xavier Leventer, Amy Schmidt, S Etourneau, Johan Domack, Eugene W Massé, Guillaume LATITUDE: -63.717000 * LONGITUDE: -57.411000 2016-03-02 application/zip, 3 datasets https://doi.pangaea.de/10.1594/PANGAEA.858524 https://doi.org/10.1594/PANGAEA.858524 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.858524 https://doi.org/10.1594/PANGAEA.858524 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Barbara, Loïc; Crosta, Xavier; Leventer, Amy; Schmidt, S; Etourneau, Johan; Domack, Eugene W; Massé, Guillaume (2016): Environmental responses of the Northeast Antarctic Peninsula to the Holocene climate variability. Paleoceanography, 31(1), 131-147, https://doi.org/10.1002/2015PA002785 Nathaniel B. Palmer NBP00-03 NBP00-03-JPC38 PC Piston corer Vega Drift Prince Gustav Channel Antarctic Peninsula Dataset 2016 ftpangaea https://doi.org/10.1594/PANGAEA.858524 https://doi.org/10.1002/2015PA002785 2023-01-20T07:33:41Z In this study, we present a unique high-resolution Holocene record of oceanographic and climatic change based on analyses of diatom assemblages combined with biomarker data from a sediment core collected from the Vega Drift, eastern Antarctic Peninsula (EAP). These data add to the climate framework already established by high-resolution marine sedimentary records from the Palmer Deep, western Antarctic Peninsula (WAP). Heavy sea ice conditions and reduced primary productivity were observed prior to 7.4 ka B.P. in relation with the proximity of the glacial ice melt and calving. Subsequent Holocene oceanographic conditions were controlled by the interactions between the Westerlies-Antarctic Circumpolar Current (ACC)-Weddell Gyre dynamics. A warm period characterized by short seasonal sea ice duration associated with a southern shift of both ACC and Westerlies field persisted until 5 ka B.P. This warm episode was then followed by climate deterioration during the middle-to-late Holocene (5 to 1.9 ka B.P.) with a gradual increase in annual sea ice duration triggered by the expansion of the Weddell Gyre and a strong oceanic connection from the EAP to the WAP. Increase of benthic diatom species during this period was indicative of more summer/autumn storms, which was consistent with changes in synoptic atmospheric circulation and the establishment of low- to high-latitude teleconnections. Finally, the multicentennial scale variability of the Weddell Gyre intensity and storm frequency during the late Holocene appeared to be associated with the increased El Niño-Southern Oscillation frequency. Dataset Antarc* Antarctic Antarctic Peninsula Sea ice PANGAEA - Data Publisher for Earth & Environmental Science Antarctic Antarctic Peninsula Weddell Palmer Deep ENVELOPE(-64.400,-64.400,-64.950,-64.950) Prince Gustav Channel ENVELOPE(-58.250,-58.250,-63.833,-63.833) ENVELOPE(-57.411000,-57.411000,-63.717000,-63.717000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Nathaniel B. Palmer NBP00-03 NBP00-03-JPC38 PC Piston corer Vega Drift Prince Gustav Channel Antarctic Peninsula |
spellingShingle |
Nathaniel B. Palmer NBP00-03 NBP00-03-JPC38 PC Piston corer Vega Drift Prince Gustav Channel Antarctic Peninsula Barbara, Loïc Crosta, Xavier Leventer, Amy Schmidt, S Etourneau, Johan Domack, Eugene W Massé, Guillaume Diatom and hydrocarbon analysis of sediment core NBP00-03-JPC38 |
topic_facet |
Nathaniel B. Palmer NBP00-03 NBP00-03-JPC38 PC Piston corer Vega Drift Prince Gustav Channel Antarctic Peninsula |
description |
In this study, we present a unique high-resolution Holocene record of oceanographic and climatic change based on analyses of diatom assemblages combined with biomarker data from a sediment core collected from the Vega Drift, eastern Antarctic Peninsula (EAP). These data add to the climate framework already established by high-resolution marine sedimentary records from the Palmer Deep, western Antarctic Peninsula (WAP). Heavy sea ice conditions and reduced primary productivity were observed prior to 7.4 ka B.P. in relation with the proximity of the glacial ice melt and calving. Subsequent Holocene oceanographic conditions were controlled by the interactions between the Westerlies-Antarctic Circumpolar Current (ACC)-Weddell Gyre dynamics. A warm period characterized by short seasonal sea ice duration associated with a southern shift of both ACC and Westerlies field persisted until 5 ka B.P. This warm episode was then followed by climate deterioration during the middle-to-late Holocene (5 to 1.9 ka B.P.) with a gradual increase in annual sea ice duration triggered by the expansion of the Weddell Gyre and a strong oceanic connection from the EAP to the WAP. Increase of benthic diatom species during this period was indicative of more summer/autumn storms, which was consistent with changes in synoptic atmospheric circulation and the establishment of low- to high-latitude teleconnections. Finally, the multicentennial scale variability of the Weddell Gyre intensity and storm frequency during the late Holocene appeared to be associated with the increased El Niño-Southern Oscillation frequency. |
format |
Dataset |
author |
Barbara, Loïc Crosta, Xavier Leventer, Amy Schmidt, S Etourneau, Johan Domack, Eugene W Massé, Guillaume |
author_facet |
Barbara, Loïc Crosta, Xavier Leventer, Amy Schmidt, S Etourneau, Johan Domack, Eugene W Massé, Guillaume |
author_sort |
Barbara, Loïc |
title |
Diatom and hydrocarbon analysis of sediment core NBP00-03-JPC38 |
title_short |
Diatom and hydrocarbon analysis of sediment core NBP00-03-JPC38 |
title_full |
Diatom and hydrocarbon analysis of sediment core NBP00-03-JPC38 |
title_fullStr |
Diatom and hydrocarbon analysis of sediment core NBP00-03-JPC38 |
title_full_unstemmed |
Diatom and hydrocarbon analysis of sediment core NBP00-03-JPC38 |
title_sort |
diatom and hydrocarbon analysis of sediment core nbp00-03-jpc38 |
publisher |
PANGAEA |
publishDate |
2016 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.858524 https://doi.org/10.1594/PANGAEA.858524 |
op_coverage |
LATITUDE: -63.717000 * LONGITUDE: -57.411000 |
long_lat |
ENVELOPE(-64.400,-64.400,-64.950,-64.950) ENVELOPE(-58.250,-58.250,-63.833,-63.833) ENVELOPE(-57.411000,-57.411000,-63.717000,-63.717000) |
geographic |
Antarctic Antarctic Peninsula Weddell Palmer Deep Prince Gustav Channel |
geographic_facet |
Antarctic Antarctic Peninsula Weddell Palmer Deep Prince Gustav Channel |
genre |
Antarc* Antarctic Antarctic Peninsula Sea ice |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Sea ice |
op_source |
Supplement to: Barbara, Loïc; Crosta, Xavier; Leventer, Amy; Schmidt, S; Etourneau, Johan; Domack, Eugene W; Massé, Guillaume (2016): Environmental responses of the Northeast Antarctic Peninsula to the Holocene climate variability. Paleoceanography, 31(1), 131-147, https://doi.org/10.1002/2015PA002785 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.858524 https://doi.org/10.1594/PANGAEA.858524 |
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.858524 https://doi.org/10.1002/2015PA002785 |
_version_ |
1766206413755908096 |