(Table S1) Diatom abundance according to ice cycles in ANDRILL AND1-1B drill core
The influence of Antarctica and the Southern Ocean on Late Pliocene global climate reconstructions has remained ambiguous due to a lack of well-dated Antarctic-proximal, paleoenvironmental records. Here we present ice sheet, sea-surface temperature, and sea ice reconstructions from the ANDRILL AND-1...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.816030 2024-09-15T17:44:27+00:00 (Table S1) Diatom abundance according to ice cycles in ANDRILL AND1-1B drill core McKay, Robert M Naish, Tim R Carter, Lionel Riesselman, Christina R Dunbar, Robert G Winter, Diane M Sjunneskog, Charlotte Sangiorgi, Francesca Warren, Courtney E Pagani, Mark Schouten, Stefan Willmott, Verónica Levy, Richard H DeConto, Robert M Powell, Ross LATITUDE: -77.889440 * LONGITUDE: 167.089320 * DATE/TIME START: 2006-10-31T00:00:00 * DATE/TIME END: 2006-12-26T00:00:00 * MINIMUM DEPTH, sediment/rock: 151.30 m * MAXIMUM DEPTH, sediment/rock: 459.24 m 2012 text/tab-separated-values, 5851 data points https://doi.pangaea.de/10.1594/PANGAEA.816030 https://doi.org/10.1594/PANGAEA.816030 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.816030 https://doi.org/10.1594/PANGAEA.816030 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: McKay, Robert M; Naish, Tim R; Carter, Lionel; Riesselman, Christina R; Dunbar, Robert G; Winter, Diane M; Sjunneskog, Charlotte; Sangiorgi, Francesca; Warren, Courtney E; Pagani, Mark; Schouten, Stefan; Willmott, Verónica; Levy, Richard H; DeConto, Robert M; Powell, Ross (2012): Antarctic and Southern Ocean influences on Late Pliocene global cooling. Proceedings of the National Academy of Sciences of the United States of America, 109(17), 6423-6428, https://doi.org/10.1073/pnas.1112248109 Actinocyclus actinochilus AND1-1B AND-1B Chaetoceros spp. Counting diatoms Cycles DEPTH sediment/rock Diatoms indeterminata DRILL Drilling/drill rig Fragilariopsis curta Fragilariopsis cylindrus Fragilariopsis kerguelensis Fragilariopsis obliquecostata Fragilariopsis ritscheri Fragilariopsis sublinearis International Polar Year (2007-2008) IPY McMurdo Ice Shelf McMurdo Station MIS Porosira pseudodenticulata Rhizosolenia spp. Rouxia antarctica Shionodiscus tetraoestrupii Stellarima microtrias Stellarima stellaris Thalassionema nitzschioides Thalassiosira antarctica Thalassiosira lentiginosa Thalassiosira oliverana Thalassiosira tumida Thalassiothrix antarctica Trichotoxon reinboldii dataset 2012 ftpangaea https://doi.org/10.1594/PANGAEA.81603010.1073/pnas.1112248109 2024-07-24T02:31:32Z The influence of Antarctica and the Southern Ocean on Late Pliocene global climate reconstructions has remained ambiguous due to a lack of well-dated Antarctic-proximal, paleoenvironmental records. Here we present ice sheet, sea-surface temperature, and sea ice reconstructions from the ANDRILL AND-1B sediment core recovered from beneath the Ross Ice Shelf. We provide evidence for a major expansion of an ice sheet in the Ross Sea that began at ~3.3 Ma, followed by a coastal sea surface temperature cooling of ~2.5°C, a stepwise expansion of sea ice, and polynya-style deep mixing in the Ross Sea between 3.3 and 2.5 Ma. The intensification of Antarctic cooling resulted in strengthened westerly winds and invigorated ocean circulation. The associated northward migration of Southern Ocean fronts has been linked with reduced Atlantic Meridional Overturning Circulation by restricting surface water connectivity between the ocean basins, with implications for heat transport to the high latitudes of the North Atlantic. While our results do not exclude low-latitude mechanisms as drivers for Pliocene cooling, they indicate an additional role played by southern high-latitude cooling during development of the bipolar world. Dataset Antarc* Antarctic Antarctica Ice Sheet Ice Shelf International Polar Year IPY McMurdo Ice Shelf North Atlantic Ross Ice Shelf Ross Sea Sea ice Southern Ocean PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(167.089320,167.089320,-77.889440,-77.889440) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Actinocyclus actinochilus AND1-1B AND-1B Chaetoceros spp. Counting diatoms Cycles DEPTH sediment/rock Diatoms indeterminata DRILL Drilling/drill rig Fragilariopsis curta Fragilariopsis cylindrus Fragilariopsis kerguelensis Fragilariopsis obliquecostata Fragilariopsis ritscheri Fragilariopsis sublinearis International Polar Year (2007-2008) IPY McMurdo Ice Shelf McMurdo Station MIS Porosira pseudodenticulata Rhizosolenia spp. Rouxia antarctica Shionodiscus tetraoestrupii Stellarima microtrias Stellarima stellaris Thalassionema nitzschioides Thalassiosira antarctica Thalassiosira lentiginosa Thalassiosira oliverana Thalassiosira tumida Thalassiothrix antarctica Trichotoxon reinboldii |
spellingShingle |
Actinocyclus actinochilus AND1-1B AND-1B Chaetoceros spp. Counting diatoms Cycles DEPTH sediment/rock Diatoms indeterminata DRILL Drilling/drill rig Fragilariopsis curta Fragilariopsis cylindrus Fragilariopsis kerguelensis Fragilariopsis obliquecostata Fragilariopsis ritscheri Fragilariopsis sublinearis International Polar Year (2007-2008) IPY McMurdo Ice Shelf McMurdo Station MIS Porosira pseudodenticulata Rhizosolenia spp. Rouxia antarctica Shionodiscus tetraoestrupii Stellarima microtrias Stellarima stellaris Thalassionema nitzschioides Thalassiosira antarctica Thalassiosira lentiginosa Thalassiosira oliverana Thalassiosira tumida Thalassiothrix antarctica Trichotoxon reinboldii McKay, Robert M Naish, Tim R Carter, Lionel Riesselman, Christina R Dunbar, Robert G Winter, Diane M Sjunneskog, Charlotte Sangiorgi, Francesca Warren, Courtney E Pagani, Mark Schouten, Stefan Willmott, Verónica Levy, Richard H DeConto, Robert M Powell, Ross (Table S1) Diatom abundance according to ice cycles in ANDRILL AND1-1B drill core |
topic_facet |
Actinocyclus actinochilus AND1-1B AND-1B Chaetoceros spp. Counting diatoms Cycles DEPTH sediment/rock Diatoms indeterminata DRILL Drilling/drill rig Fragilariopsis curta Fragilariopsis cylindrus Fragilariopsis kerguelensis Fragilariopsis obliquecostata Fragilariopsis ritscheri Fragilariopsis sublinearis International Polar Year (2007-2008) IPY McMurdo Ice Shelf McMurdo Station MIS Porosira pseudodenticulata Rhizosolenia spp. Rouxia antarctica Shionodiscus tetraoestrupii Stellarima microtrias Stellarima stellaris Thalassionema nitzschioides Thalassiosira antarctica Thalassiosira lentiginosa Thalassiosira oliverana Thalassiosira tumida Thalassiothrix antarctica Trichotoxon reinboldii |
description |
The influence of Antarctica and the Southern Ocean on Late Pliocene global climate reconstructions has remained ambiguous due to a lack of well-dated Antarctic-proximal, paleoenvironmental records. Here we present ice sheet, sea-surface temperature, and sea ice reconstructions from the ANDRILL AND-1B sediment core recovered from beneath the Ross Ice Shelf. We provide evidence for a major expansion of an ice sheet in the Ross Sea that began at ~3.3 Ma, followed by a coastal sea surface temperature cooling of ~2.5°C, a stepwise expansion of sea ice, and polynya-style deep mixing in the Ross Sea between 3.3 and 2.5 Ma. The intensification of Antarctic cooling resulted in strengthened westerly winds and invigorated ocean circulation. The associated northward migration of Southern Ocean fronts has been linked with reduced Atlantic Meridional Overturning Circulation by restricting surface water connectivity between the ocean basins, with implications for heat transport to the high latitudes of the North Atlantic. While our results do not exclude low-latitude mechanisms as drivers for Pliocene cooling, they indicate an additional role played by southern high-latitude cooling during development of the bipolar world. |
format |
Dataset |
author |
McKay, Robert M Naish, Tim R Carter, Lionel Riesselman, Christina R Dunbar, Robert G Winter, Diane M Sjunneskog, Charlotte Sangiorgi, Francesca Warren, Courtney E Pagani, Mark Schouten, Stefan Willmott, Verónica Levy, Richard H DeConto, Robert M Powell, Ross |
author_facet |
McKay, Robert M Naish, Tim R Carter, Lionel Riesselman, Christina R Dunbar, Robert G Winter, Diane M Sjunneskog, Charlotte Sangiorgi, Francesca Warren, Courtney E Pagani, Mark Schouten, Stefan Willmott, Verónica Levy, Richard H DeConto, Robert M Powell, Ross |
author_sort |
McKay, Robert M |
title |
(Table S1) Diatom abundance according to ice cycles in ANDRILL AND1-1B drill core |
title_short |
(Table S1) Diatom abundance according to ice cycles in ANDRILL AND1-1B drill core |
title_full |
(Table S1) Diatom abundance according to ice cycles in ANDRILL AND1-1B drill core |
title_fullStr |
(Table S1) Diatom abundance according to ice cycles in ANDRILL AND1-1B drill core |
title_full_unstemmed |
(Table S1) Diatom abundance according to ice cycles in ANDRILL AND1-1B drill core |
title_sort |
(table s1) diatom abundance according to ice cycles in andrill and1-1b drill core |
publisher |
PANGAEA |
publishDate |
2012 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.816030 https://doi.org/10.1594/PANGAEA.816030 |
op_coverage |
LATITUDE: -77.889440 * LONGITUDE: 167.089320 * DATE/TIME START: 2006-10-31T00:00:00 * DATE/TIME END: 2006-12-26T00:00:00 * MINIMUM DEPTH, sediment/rock: 151.30 m * MAXIMUM DEPTH, sediment/rock: 459.24 m |
long_lat |
ENVELOPE(167.089320,167.089320,-77.889440,-77.889440) |
genre |
Antarc* Antarctic Antarctica Ice Sheet Ice Shelf International Polar Year IPY McMurdo Ice Shelf North Atlantic Ross Ice Shelf Ross Sea Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet Ice Shelf International Polar Year IPY McMurdo Ice Shelf North Atlantic Ross Ice Shelf Ross Sea Sea ice Southern Ocean |
op_source |
Supplement to: McKay, Robert M; Naish, Tim R; Carter, Lionel; Riesselman, Christina R; Dunbar, Robert G; Winter, Diane M; Sjunneskog, Charlotte; Sangiorgi, Francesca; Warren, Courtney E; Pagani, Mark; Schouten, Stefan; Willmott, Verónica; Levy, Richard H; DeConto, Robert M; Powell, Ross (2012): Antarctic and Southern Ocean influences on Late Pliocene global cooling. Proceedings of the National Academy of Sciences of the United States of America, 109(17), 6423-6428, https://doi.org/10.1073/pnas.1112248109 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.816030 https://doi.org/10.1594/PANGAEA.816030 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.81603010.1073/pnas.1112248109 |
_version_ |
1810492042085662720 |