Environmental Responses of the Northeast Antarctic Peninsula to the Holocene Climate Variability
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...
Published in: | Paleoceanography |
---|---|
Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
Digital Commons @ University of South Florida
2016
|
Subjects: | |
Online Access: | https://digitalcommons.usf.edu/msc_facpub/2555 https://doi.org/10.1002/2015PA002785 |
id |
ftunisfloridatam:oai:digitalcommons.usf.edu:msc_facpub-3585 |
---|---|
record_format |
openpolar |
spelling |
ftunisfloridatam:oai:digitalcommons.usf.edu:msc_facpub-3585 2023-05-15T13:47:15+02:00 Environmental Responses of the Northeast Antarctic Peninsula to the Holocene Climate Variability Barbara, Loïc Crosta, Xavier Leventer, Amy Schmidt, Sabine Etourneau, Johan Domack, Eugene Massé, Guillaume 2016-01-01T08:00:00Z https://digitalcommons.usf.edu/msc_facpub/2555 https://doi.org/10.1002/2015PA002785 unknown Digital Commons @ University of South Florida https://digitalcommons.usf.edu/msc_facpub/2555 https://doi.org/10.1002/2015PA002785 Marine Science Faculty Publications Holocene Antarctic Peninsula sea ice Westerlies diatoms HBI Life Sciences article 2016 ftunisfloridatam https://doi.org/10.1002/2015PA002785 2022-11-10T18:46:01Z 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. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Sea ice Digital Commons University of South Florida (USF) Antarctic Antarctic Peninsula Palmer Deep ENVELOPE(-64.400,-64.400,-64.950,-64.950) Weddell Paleoceanography 31 1 131 147 |
institution |
Open Polar |
collection |
Digital Commons University of South Florida (USF) |
op_collection_id |
ftunisfloridatam |
language |
unknown |
topic |
Holocene Antarctic Peninsula sea ice Westerlies diatoms HBI Life Sciences |
spellingShingle |
Holocene Antarctic Peninsula sea ice Westerlies diatoms HBI Life Sciences Barbara, Loïc Crosta, Xavier Leventer, Amy Schmidt, Sabine Etourneau, Johan Domack, Eugene Massé, Guillaume Environmental Responses of the Northeast Antarctic Peninsula to the Holocene Climate Variability |
topic_facet |
Holocene Antarctic Peninsula sea ice Westerlies diatoms HBI Life Sciences |
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 |
Article in Journal/Newspaper |
author |
Barbara, Loïc Crosta, Xavier Leventer, Amy Schmidt, Sabine Etourneau, Johan Domack, Eugene Massé, Guillaume |
author_facet |
Barbara, Loïc Crosta, Xavier Leventer, Amy Schmidt, Sabine Etourneau, Johan Domack, Eugene Massé, Guillaume |
author_sort |
Barbara, Loïc |
title |
Environmental Responses of the Northeast Antarctic Peninsula to the Holocene Climate Variability |
title_short |
Environmental Responses of the Northeast Antarctic Peninsula to the Holocene Climate Variability |
title_full |
Environmental Responses of the Northeast Antarctic Peninsula to the Holocene Climate Variability |
title_fullStr |
Environmental Responses of the Northeast Antarctic Peninsula to the Holocene Climate Variability |
title_full_unstemmed |
Environmental Responses of the Northeast Antarctic Peninsula to the Holocene Climate Variability |
title_sort |
environmental responses of the northeast antarctic peninsula to the holocene climate variability |
publisher |
Digital Commons @ University of South Florida |
publishDate |
2016 |
url |
https://digitalcommons.usf.edu/msc_facpub/2555 https://doi.org/10.1002/2015PA002785 |
long_lat |
ENVELOPE(-64.400,-64.400,-64.950,-64.950) |
geographic |
Antarctic Antarctic Peninsula Palmer Deep Weddell |
geographic_facet |
Antarctic Antarctic Peninsula Palmer Deep Weddell |
genre |
Antarc* Antarctic Antarctic Peninsula Sea ice |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Sea ice |
op_source |
Marine Science Faculty Publications |
op_relation |
https://digitalcommons.usf.edu/msc_facpub/2555 https://doi.org/10.1002/2015PA002785 |
op_doi |
https://doi.org/10.1002/2015PA002785 |
container_title |
Paleoceanography |
container_volume |
31 |
container_issue |
1 |
container_start_page |
131 |
op_container_end_page |
147 |
_version_ |
1766246804369702912 |