Late Quaternary variations in sea surface temperatures and their relationship to orbital forcing recorded in the Southern Ocean (Atlantic sector)
Late Quaternary summer sea surface temperatures (SSTs) have been derived from radiolarian assemblages in the East Atlantic sector of the Southern Ocean. In the subantarctic and the polar frontal zone, glacial SSTs (oxygen isotope stages 2, 4, 6, and 8) were 3 degrees-5 degrees C cooler than today, i...
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Amer Geophysical Union
1999
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Online Access: | https://archimer.ifremer.fr/doc/00239/35066/34590.pdf https://doi.org/10.1029/1998PA900020 https://archimer.ifremer.fr/doc/00239/35066/ |
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ftarchimer:oai:archimer.ifremer.fr:35066 2023-05-15T17:13:50+02:00 Late Quaternary variations in sea surface temperatures and their relationship to orbital forcing recorded in the Southern Ocean (Atlantic sector) Brathauer, U Abelmann, A 1999-04 application/pdf https://archimer.ifremer.fr/doc/00239/35066/34590.pdf https://doi.org/10.1029/1998PA900020 https://archimer.ifremer.fr/doc/00239/35066/ eng eng Amer Geophysical Union https://archimer.ifremer.fr/doc/00239/35066/34590.pdf doi:10.1029/1998PA900020 https://archimer.ifremer.fr/doc/00239/35066/ 1999 by the American Geophysical Union. info:eu-repo/semantics/openAccess restricted use Paleoceanography (0883-8305) (Amer Geophysical Union), 1999-04 , Vol. 14 , N. 2 , P. 135-148 text Publication info:eu-repo/semantics/article 1999 ftarchimer https://doi.org/10.1029/1998PA900020 2021-09-23T20:25:32Z Late Quaternary summer sea surface temperatures (SSTs) have been derived from radiolarian assemblages in the East Atlantic sector of the Southern Ocean. In the subantarctic and the polar frontal zone, glacial SSTs (oxygen isotope stages 2, 4, 6, and 8) were 3 degrees-5 degrees C cooler than today, indicating northward displacements of the isotherms about 2 degrees-4 degrees of latitudes. During interglacials, SSTs almost reached modern levels (oxygen isotope stages 7 and 9) or exceeded them by 2 degrees-3 degrees C (oxygen isotope stages 1 and 5.5). In the subantarctic Atlantic Ocean, changes in SST and calcium carbonate content of the sediment precede variations in global ice volume in the range of the main Milankovitch frequencies. Comparisons with the timing of North Atlantic Deep Water (NADW) proxy records suggests that this early response in the subantarctic Atlantic Ocean is not triggered by the flux of NADW to the Southern Ocean. Article in Journal/Newspaper NADW North Atlantic Deep Water North Atlantic Southern Ocean Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Southern Ocean Paleoceanography 14 2 135 148 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
description |
Late Quaternary summer sea surface temperatures (SSTs) have been derived from radiolarian assemblages in the East Atlantic sector of the Southern Ocean. In the subantarctic and the polar frontal zone, glacial SSTs (oxygen isotope stages 2, 4, 6, and 8) were 3 degrees-5 degrees C cooler than today, indicating northward displacements of the isotherms about 2 degrees-4 degrees of latitudes. During interglacials, SSTs almost reached modern levels (oxygen isotope stages 7 and 9) or exceeded them by 2 degrees-3 degrees C (oxygen isotope stages 1 and 5.5). In the subantarctic Atlantic Ocean, changes in SST and calcium carbonate content of the sediment precede variations in global ice volume in the range of the main Milankovitch frequencies. Comparisons with the timing of North Atlantic Deep Water (NADW) proxy records suggests that this early response in the subantarctic Atlantic Ocean is not triggered by the flux of NADW to the Southern Ocean. |
format |
Article in Journal/Newspaper |
author |
Brathauer, U Abelmann, A |
spellingShingle |
Brathauer, U Abelmann, A Late Quaternary variations in sea surface temperatures and their relationship to orbital forcing recorded in the Southern Ocean (Atlantic sector) |
author_facet |
Brathauer, U Abelmann, A |
author_sort |
Brathauer, U |
title |
Late Quaternary variations in sea surface temperatures and their relationship to orbital forcing recorded in the Southern Ocean (Atlantic sector) |
title_short |
Late Quaternary variations in sea surface temperatures and their relationship to orbital forcing recorded in the Southern Ocean (Atlantic sector) |
title_full |
Late Quaternary variations in sea surface temperatures and their relationship to orbital forcing recorded in the Southern Ocean (Atlantic sector) |
title_fullStr |
Late Quaternary variations in sea surface temperatures and their relationship to orbital forcing recorded in the Southern Ocean (Atlantic sector) |
title_full_unstemmed |
Late Quaternary variations in sea surface temperatures and their relationship to orbital forcing recorded in the Southern Ocean (Atlantic sector) |
title_sort |
late quaternary variations in sea surface temperatures and their relationship to orbital forcing recorded in the southern ocean (atlantic sector) |
publisher |
Amer Geophysical Union |
publishDate |
1999 |
url |
https://archimer.ifremer.fr/doc/00239/35066/34590.pdf https://doi.org/10.1029/1998PA900020 https://archimer.ifremer.fr/doc/00239/35066/ |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
NADW North Atlantic Deep Water North Atlantic Southern Ocean |
genre_facet |
NADW North Atlantic Deep Water North Atlantic Southern Ocean |
op_source |
Paleoceanography (0883-8305) (Amer Geophysical Union), 1999-04 , Vol. 14 , N. 2 , P. 135-148 |
op_relation |
https://archimer.ifremer.fr/doc/00239/35066/34590.pdf doi:10.1029/1998PA900020 https://archimer.ifremer.fr/doc/00239/35066/ |
op_rights |
1999 by the American Geophysical Union. info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1029/1998PA900020 |
container_title |
Paleoceanography |
container_volume |
14 |
container_issue |
2 |
container_start_page |
135 |
op_container_end_page |
148 |
_version_ |
1766071022544486400 |