Barium accumulation in the Atlantic sector of the Southern Ocean - results from 190,000 year records.
Extensive investigations of sedimentary barium were performed in the southern South Atlantic in order to assess the reliability of the barium signal in Antarctic sediments as a proxy for paleoproductivity. Maximum accumulation rates of excess barium were calculated for the Antarctic zone south of th...
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Language: | English |
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AGU (American Geophysical Union)
1997
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Online Access: | https://oceanrep.geomar.de/id/eprint/5821/ https://oceanrep.geomar.de/id/eprint/5821/1/palo612.pdf https://doi.org/10.1029/97PA01130 |
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ftoceanrep:oai:oceanrep.geomar.de:5821 2023-05-15T14:10:22+02:00 Barium accumulation in the Atlantic sector of the Southern Ocean - results from 190,000 year records. Nürnberg, Christine C. Bohrmann, Gerhard Schlüter, Michael Frank, Martin 1997 text https://oceanrep.geomar.de/id/eprint/5821/ https://oceanrep.geomar.de/id/eprint/5821/1/palo612.pdf https://doi.org/10.1029/97PA01130 en eng AGU (American Geophysical Union) https://oceanrep.geomar.de/id/eprint/5821/1/palo612.pdf Nürnberg, C. C., Bohrmann, G., Schlüter, M. and Frank, M. (1997) Barium accumulation in the Atlantic sector of the Southern Ocean - results from 190,000 year records. Open Access Paleoceanography, 12 (4). pp. 594-603. DOI 10.1029/97PA01130 <https://doi.org/10.1029/97PA01130>. doi:10.1029/97PA01130 info:eu-repo/semantics/openAccess Article PeerReviewed 1997 ftoceanrep https://doi.org/10.1029/97PA01130 2023-04-07T14:51:46Z Extensive investigations of sedimentary barium were performed in the southern South Atlantic in order to assess the reliability of the barium signal in Antarctic sediments as a proxy for paleoproductivity. Maximum accumulation rates of excess barium were calculated for the Antarctic zone south of the polar front where silica accumulates at high rates. The correspondence between barium and opal supports the applicability of barium as a proxy for productivity. Within the Antarctic zone north of today's average sea ice maximum, interglacial vertical rain rates of excess barium are high, with a maximum occurring during the last deglaciation and early Holocene and during oxygen isotope chronozone 5.5. During these periods, the maximum silica accumulation was supposedly located south of the polar front. Glacial paleoproductivity, instead, was low within the Antarctic zone. North of the polar front, significantly higher barium accumulation occurs during glacial times. The vertical rain rates, however, are as high as in the glacial Antarctic zone. Therefore there was no evidence for an increased productivity in the glacial Southern Ocean. Article in Journal/Newspaper Antarc* Antarctic Sea ice Southern Ocean OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Antarctic Southern Ocean The Antarctic Paleoceanography 12 4 594 603 |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
Extensive investigations of sedimentary barium were performed in the southern South Atlantic in order to assess the reliability of the barium signal in Antarctic sediments as a proxy for paleoproductivity. Maximum accumulation rates of excess barium were calculated for the Antarctic zone south of the polar front where silica accumulates at high rates. The correspondence between barium and opal supports the applicability of barium as a proxy for productivity. Within the Antarctic zone north of today's average sea ice maximum, interglacial vertical rain rates of excess barium are high, with a maximum occurring during the last deglaciation and early Holocene and during oxygen isotope chronozone 5.5. During these periods, the maximum silica accumulation was supposedly located south of the polar front. Glacial paleoproductivity, instead, was low within the Antarctic zone. North of the polar front, significantly higher barium accumulation occurs during glacial times. The vertical rain rates, however, are as high as in the glacial Antarctic zone. Therefore there was no evidence for an increased productivity in the glacial Southern Ocean. |
format |
Article in Journal/Newspaper |
author |
Nürnberg, Christine C. Bohrmann, Gerhard Schlüter, Michael Frank, Martin |
spellingShingle |
Nürnberg, Christine C. Bohrmann, Gerhard Schlüter, Michael Frank, Martin Barium accumulation in the Atlantic sector of the Southern Ocean - results from 190,000 year records. |
author_facet |
Nürnberg, Christine C. Bohrmann, Gerhard Schlüter, Michael Frank, Martin |
author_sort |
Nürnberg, Christine C. |
title |
Barium accumulation in the Atlantic sector of the Southern Ocean - results from 190,000 year records. |
title_short |
Barium accumulation in the Atlantic sector of the Southern Ocean - results from 190,000 year records. |
title_full |
Barium accumulation in the Atlantic sector of the Southern Ocean - results from 190,000 year records. |
title_fullStr |
Barium accumulation in the Atlantic sector of the Southern Ocean - results from 190,000 year records. |
title_full_unstemmed |
Barium accumulation in the Atlantic sector of the Southern Ocean - results from 190,000 year records. |
title_sort |
barium accumulation in the atlantic sector of the southern ocean - results from 190,000 year records. |
publisher |
AGU (American Geophysical Union) |
publishDate |
1997 |
url |
https://oceanrep.geomar.de/id/eprint/5821/ https://oceanrep.geomar.de/id/eprint/5821/1/palo612.pdf https://doi.org/10.1029/97PA01130 |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Sea ice Southern Ocean |
op_relation |
https://oceanrep.geomar.de/id/eprint/5821/1/palo612.pdf Nürnberg, C. C., Bohrmann, G., Schlüter, M. and Frank, M. (1997) Barium accumulation in the Atlantic sector of the Southern Ocean - results from 190,000 year records. Open Access Paleoceanography, 12 (4). pp. 594-603. DOI 10.1029/97PA01130 <https://doi.org/10.1029/97PA01130>. doi:10.1029/97PA01130 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/97PA01130 |
container_title |
Paleoceanography |
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12 |
container_issue |
4 |
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594 |
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603 |
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1766282415319285760 |