Sea-surface temperature and sea ice distribution of the Southern Ocean at the EPILOG Last Glacial Maximum
Based on the quantitative study of diatoms and radiolarians, summer sea-surface temperature (SSST) and sea ice distribution were estimated from 122 sediment core localities in the Atlantic, Indian and Pacific sectors of the Southern Ocean to reconstruct the last glacial environment at the EPILOG (19...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.728237 2023-05-15T13:42:09+02:00 Sea-surface temperature and sea ice distribution of the Southern Ocean at the EPILOG Last Glacial Maximum Gersonde, Rainer Crosta, Xavier Abelmann, Andrea Armand, Leanne K MEDIAN LATITUDE: -47.467649 * MEDIAN LONGITUDE: -5.456374 * SOUTH-BOUND LATITUDE: -55.373000 * WEST-BOUND LONGITUDE: -57.947330 * NORTH-BOUND LATITUDE: -40.943830 * EAST-BOUND LONGITUDE: 15.364830 * DATE/TIME START: 1986-03-22T00:00:00 * DATE/TIME END: 1997-03-15T11:20:00 2005-09-30 application/zip, 4 datasets https://doi.pangaea.de/10.1594/PANGAEA.728237 https://doi.org/10.1594/PANGAEA.728237 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.728237 https://doi.org/10.1594/PANGAEA.728237 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Gersonde, Rainer; Crosta, Xavier; Abelmann, Andrea; Armand, Leanne K (2005): Sea-surface temperature and sea ice distribution of the Southern Ocean at the EPILOG Last Glacial Maximum: A circum-Antarctic view based on siliceous microfossil records. Quaternary Science Reviews, 24(7-9), 869-896, https://doi.org/10.1016/j.quascirev.2004.07.015 Agulhas Basin Agulhas Ridge ANT-IV/4 ANT-IX/4 ANT-VI/3 ANT-VIII/3 ANT-X/5 ANT-XI/2 ANT-XI/4 ANT-XIV/3 Argentine Islands Atlantic Indik Ridge Atlantic Ridge Gravity corer (Kiel type) KL MARGO Meteor Rise Multiproxy Approach for the Reconstruction of the Glacial Ocean surface Piston corer (BGR type) Polarstern Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas PS08 PS08/504 PS08/533 PS12 PS12/551 PS1433-1 PS1444-1 PS16 PS16/284 PS16/311 PS16/345 PS16/351 PS16/366 PS1651-1 PS1756-5 PS1768-8 PS1778-5 PS1779-2 PS1783-5 PS18 PS18/238 PS18/247 PS18/262 PS2082-1 PS2089-1 PS2104-2 PS22/678 PS22/751 PS22 06AQANTX_5 Dataset 2005 ftpangaea https://doi.org/10.1594/PANGAEA.728237 https://doi.org/10.1016/j.quascirev.2004.07.015 2023-01-20T07:31:31Z Based on the quantitative study of diatoms and radiolarians, summer sea-surface temperature (SSST) and sea ice distribution were estimated from 122 sediment core localities in the Atlantic, Indian and Pacific sectors of the Southern Ocean to reconstruct the last glacial environment at the EPILOG (19.5-16.0 ka or 23 000-19 000 cal yr. B.P.) time-slice. The statistical methods applied include the Imbrie and Kipp Method, the Modern Analog Technique and the General Additive Model. Summer SSTs reveal greater surface-water cooling than reconstructed by CLIMAP (Geol. Soc. Am. Map Chart. Ser. MC-36 (1981) 1), reaching a maximum (4-5 °C) in the present Subantarctic Zone of the Atlantic and Indian sector. The reconstruction of maximum winter sea ice (WSI) extent is in accordance with CLIMAP, showing an expansion of the WSI field by around 100% compared to the present. Although only limited information is available, the data clearly show that CLIMAP strongly overestimated the glacial summer sea ice extent. As a result of the northward expansion of Antarctic cold waters by 5-10° in latitude and a relatively small displacement of the Subtropical Front, thermal gradients were steepened during the last glacial in the northern zone of the Southern Ocean. Such reconstruction may, however, be inapposite for the Pacific sector. The few data available indicate reduced cooling in the southern Pacific and give suggestion for a non-uniform cooling of the glacial Southern Ocean. Dataset Antarc* Antarctic Arctic Argentine Islands Sea ice Southern Ocean PANGAEA - Data Publisher for Earth & Environmental Science Arctic Antarctic Southern Ocean Pacific Indian Argentine Argentine Islands ENVELOPE(-64.273,-64.273,-65.246,-65.246) Agulhas Basin ENVELOPE(27.000,27.000,-47.000,-47.000) ENVELOPE(-57.947330,15.364830,-40.943830,-55.373000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Agulhas Basin Agulhas Ridge ANT-IV/4 ANT-IX/4 ANT-VI/3 ANT-VIII/3 ANT-X/5 ANT-XI/2 ANT-XI/4 ANT-XIV/3 Argentine Islands Atlantic Indik Ridge Atlantic Ridge Gravity corer (Kiel type) KL MARGO Meteor Rise Multiproxy Approach for the Reconstruction of the Glacial Ocean surface Piston corer (BGR type) Polarstern Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas PS08 PS08/504 PS08/533 PS12 PS12/551 PS1433-1 PS1444-1 PS16 PS16/284 PS16/311 PS16/345 PS16/351 PS16/366 PS1651-1 PS1756-5 PS1768-8 PS1778-5 PS1779-2 PS1783-5 PS18 PS18/238 PS18/247 PS18/262 PS2082-1 PS2089-1 PS2104-2 PS22/678 PS22/751 PS22 06AQANTX_5 |
spellingShingle |
Agulhas Basin Agulhas Ridge ANT-IV/4 ANT-IX/4 ANT-VI/3 ANT-VIII/3 ANT-X/5 ANT-XI/2 ANT-XI/4 ANT-XIV/3 Argentine Islands Atlantic Indik Ridge Atlantic Ridge Gravity corer (Kiel type) KL MARGO Meteor Rise Multiproxy Approach for the Reconstruction of the Glacial Ocean surface Piston corer (BGR type) Polarstern Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas PS08 PS08/504 PS08/533 PS12 PS12/551 PS1433-1 PS1444-1 PS16 PS16/284 PS16/311 PS16/345 PS16/351 PS16/366 PS1651-1 PS1756-5 PS1768-8 PS1778-5 PS1779-2 PS1783-5 PS18 PS18/238 PS18/247 PS18/262 PS2082-1 PS2089-1 PS2104-2 PS22/678 PS22/751 PS22 06AQANTX_5 Gersonde, Rainer Crosta, Xavier Abelmann, Andrea Armand, Leanne K Sea-surface temperature and sea ice distribution of the Southern Ocean at the EPILOG Last Glacial Maximum |
topic_facet |
Agulhas Basin Agulhas Ridge ANT-IV/4 ANT-IX/4 ANT-VI/3 ANT-VIII/3 ANT-X/5 ANT-XI/2 ANT-XI/4 ANT-XIV/3 Argentine Islands Atlantic Indik Ridge Atlantic Ridge Gravity corer (Kiel type) KL MARGO Meteor Rise Multiproxy Approach for the Reconstruction of the Glacial Ocean surface Piston corer (BGR type) Polarstern Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas PS08 PS08/504 PS08/533 PS12 PS12/551 PS1433-1 PS1444-1 PS16 PS16/284 PS16/311 PS16/345 PS16/351 PS16/366 PS1651-1 PS1756-5 PS1768-8 PS1778-5 PS1779-2 PS1783-5 PS18 PS18/238 PS18/247 PS18/262 PS2082-1 PS2089-1 PS2104-2 PS22/678 PS22/751 PS22 06AQANTX_5 |
description |
Based on the quantitative study of diatoms and radiolarians, summer sea-surface temperature (SSST) and sea ice distribution were estimated from 122 sediment core localities in the Atlantic, Indian and Pacific sectors of the Southern Ocean to reconstruct the last glacial environment at the EPILOG (19.5-16.0 ka or 23 000-19 000 cal yr. B.P.) time-slice. The statistical methods applied include the Imbrie and Kipp Method, the Modern Analog Technique and the General Additive Model. Summer SSTs reveal greater surface-water cooling than reconstructed by CLIMAP (Geol. Soc. Am. Map Chart. Ser. MC-36 (1981) 1), reaching a maximum (4-5 °C) in the present Subantarctic Zone of the Atlantic and Indian sector. The reconstruction of maximum winter sea ice (WSI) extent is in accordance with CLIMAP, showing an expansion of the WSI field by around 100% compared to the present. Although only limited information is available, the data clearly show that CLIMAP strongly overestimated the glacial summer sea ice extent. As a result of the northward expansion of Antarctic cold waters by 5-10° in latitude and a relatively small displacement of the Subtropical Front, thermal gradients were steepened during the last glacial in the northern zone of the Southern Ocean. Such reconstruction may, however, be inapposite for the Pacific sector. The few data available indicate reduced cooling in the southern Pacific and give suggestion for a non-uniform cooling of the glacial Southern Ocean. |
format |
Dataset |
author |
Gersonde, Rainer Crosta, Xavier Abelmann, Andrea Armand, Leanne K |
author_facet |
Gersonde, Rainer Crosta, Xavier Abelmann, Andrea Armand, Leanne K |
author_sort |
Gersonde, Rainer |
title |
Sea-surface temperature and sea ice distribution of the Southern Ocean at the EPILOG Last Glacial Maximum |
title_short |
Sea-surface temperature and sea ice distribution of the Southern Ocean at the EPILOG Last Glacial Maximum |
title_full |
Sea-surface temperature and sea ice distribution of the Southern Ocean at the EPILOG Last Glacial Maximum |
title_fullStr |
Sea-surface temperature and sea ice distribution of the Southern Ocean at the EPILOG Last Glacial Maximum |
title_full_unstemmed |
Sea-surface temperature and sea ice distribution of the Southern Ocean at the EPILOG Last Glacial Maximum |
title_sort |
sea-surface temperature and sea ice distribution of the southern ocean at the epilog last glacial maximum |
publisher |
PANGAEA |
publishDate |
2005 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.728237 https://doi.org/10.1594/PANGAEA.728237 |
op_coverage |
MEDIAN LATITUDE: -47.467649 * MEDIAN LONGITUDE: -5.456374 * SOUTH-BOUND LATITUDE: -55.373000 * WEST-BOUND LONGITUDE: -57.947330 * NORTH-BOUND LATITUDE: -40.943830 * EAST-BOUND LONGITUDE: 15.364830 * DATE/TIME START: 1986-03-22T00:00:00 * DATE/TIME END: 1997-03-15T11:20:00 |
long_lat |
ENVELOPE(-64.273,-64.273,-65.246,-65.246) ENVELOPE(27.000,27.000,-47.000,-47.000) ENVELOPE(-57.947330,15.364830,-40.943830,-55.373000) |
geographic |
Arctic Antarctic Southern Ocean Pacific Indian Argentine Argentine Islands Agulhas Basin |
geographic_facet |
Arctic Antarctic Southern Ocean Pacific Indian Argentine Argentine Islands Agulhas Basin |
genre |
Antarc* Antarctic Arctic Argentine Islands Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Arctic Argentine Islands Sea ice Southern Ocean |
op_source |
Supplement to: Gersonde, Rainer; Crosta, Xavier; Abelmann, Andrea; Armand, Leanne K (2005): Sea-surface temperature and sea ice distribution of the Southern Ocean at the EPILOG Last Glacial Maximum: A circum-Antarctic view based on siliceous microfossil records. Quaternary Science Reviews, 24(7-9), 869-896, https://doi.org/10.1016/j.quascirev.2004.07.015 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.728237 https://doi.org/10.1594/PANGAEA.728237 |
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.728237 https://doi.org/10.1016/j.quascirev.2004.07.015 |
_version_ |
1766163575003414528 |