Radionuclides in sediment cores of the Atlantic sector of the Southern Ocean, supplement to: Frank, Martin; Gersonde, Rainer; Rutgers van der Loeff, Michiel M; Bohrmann, Gerhard; Nürnberg, Christine Caroline; Kubik, Peter W; Suter, Martin; Mangini, Augusto (2000): Similar glacial and interglacial export bioproductivity in the Atlantic sector of the Southern Ocean: multiproxy evidence and implications for atmospheric CO2. Paleoceanography, 15(6), 642-658
We present time series of export productivity proxy data including 230Thex-normalized deposition rates (rain rates) of 10Be, dissolution-corrected biogenic Ba, and biogenic opal as well as authigenic U concentrations which are complemented by rain rates of total (detrital) Fe and sea ice indicating...
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ftdatacite:10.1594/pangaea.735021 2023-05-15T14:04:24+02:00 Radionuclides in sediment cores of the Atlantic sector of the Southern Ocean, supplement to: Frank, Martin; Gersonde, Rainer; Rutgers van der Loeff, Michiel M; Bohrmann, Gerhard; Nürnberg, Christine Caroline; Kubik, Peter W; Suter, Martin; Mangini, Augusto (2000): Similar glacial and interglacial export bioproductivity in the Atlantic sector of the Southern Ocean: multiproxy evidence and implications for atmospheric CO2. Paleoceanography, 15(6), 642-658 Frank, Martin Gersonde, Rainer Rutgers van der Loeff, Michiel M Bohrmann, Gerhard Nürnberg, Christine Caroline Kubik, Peter W Suter, Martin Mangini, Augusto 2000 application/zip https://dx.doi.org/10.1594/pangaea.735021 https://doi.pangaea.de/10.1594/PANGAEA.735021 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1029/2000pa000497 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Gravity corer Kiel type Giant box corer MultiCorer ANT-VIII/3 Polarstern Marine Geochemistry @ AWI AWI_MarGeoChem Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo Silicon Cycling in the World Ocean SINOPS South Atlantic in Late Quaternary Reconstruction of Budget and Currents SFB261 article Supplementary Collection of Datasets Collection 2000 ftdatacite https://doi.org/10.1594/pangaea.735021 https://doi.org/10.1029/2000pa000497 2022-02-09T12:06:21Z We present time series of export productivity proxy data including 230Thex-normalized deposition rates (rain rates) of 10Be, dissolution-corrected biogenic Ba, and biogenic opal as well as authigenic U concentrations which are complemented by rain rates of total (detrital) Fe and sea ice indicating diatom abundances from five sediment cores across the Atlantic sector of the Southern Ocean covering the past 150,000 years. The results suggest that 10Be rain rates and authigenic U concentration cannot serve as quantitative paleoproductivity proxies because they have also been influenced by detrital particle fluxes in the case of 10Be and bulk sedimentation rates (sediment focussing) and deep water oxygenation in the case of U. The combined results of the remaining productivity proxies of this study (rain rates of biogenic opal and biogenic Ba in those sections without authigenic U) and other previously published proxy data from the Southern Ocean (231Pa/230Th and nitrogen isotopes) suggest that a combination of sea ice cover, shallow remineralization depth, and stratification of the glacial water column south of the present position of the Antarctic Polar Front and possibly Fe fertilization north of it have been the main controlling factors of export paleoproductivity in the Southern Ocean over the last 150,000 years. An overall glacial increase of export paleoproductivity is not supported by the data, implying that bioproductivity variations in the Southern Ocean are unlikely to have contributed to the major glacial atmospheric CO2 drawdown observed in ice cores. : For data of sites PS1772 and 2082 see Frank et al. (1996) dataset: doi:10.1594/PANGAEA.711823 Article in Journal/Newspaper Antarc* Antarctic Sea ice Southern Ocean DataCite Metadata Store (German National Library of Science and Technology) Antarctic Augusto ENVELOPE(-61.613,-61.613,-64.054,-64.054) Southern Ocean The Antarctic |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Gravity corer Kiel type Giant box corer MultiCorer ANT-VIII/3 Polarstern Marine Geochemistry @ AWI AWI_MarGeoChem Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo Silicon Cycling in the World Ocean SINOPS South Atlantic in Late Quaternary Reconstruction of Budget and Currents SFB261 |
spellingShingle |
Gravity corer Kiel type Giant box corer MultiCorer ANT-VIII/3 Polarstern Marine Geochemistry @ AWI AWI_MarGeoChem Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo Silicon Cycling in the World Ocean SINOPS South Atlantic in Late Quaternary Reconstruction of Budget and Currents SFB261 Frank, Martin Gersonde, Rainer Rutgers van der Loeff, Michiel M Bohrmann, Gerhard Nürnberg, Christine Caroline Kubik, Peter W Suter, Martin Mangini, Augusto Radionuclides in sediment cores of the Atlantic sector of the Southern Ocean, supplement to: Frank, Martin; Gersonde, Rainer; Rutgers van der Loeff, Michiel M; Bohrmann, Gerhard; Nürnberg, Christine Caroline; Kubik, Peter W; Suter, Martin; Mangini, Augusto (2000): Similar glacial and interglacial export bioproductivity in the Atlantic sector of the Southern Ocean: multiproxy evidence and implications for atmospheric CO2. Paleoceanography, 15(6), 642-658 |
topic_facet |
Gravity corer Kiel type Giant box corer MultiCorer ANT-VIII/3 Polarstern Marine Geochemistry @ AWI AWI_MarGeoChem Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo Silicon Cycling in the World Ocean SINOPS South Atlantic in Late Quaternary Reconstruction of Budget and Currents SFB261 |
description |
We present time series of export productivity proxy data including 230Thex-normalized deposition rates (rain rates) of 10Be, dissolution-corrected biogenic Ba, and biogenic opal as well as authigenic U concentrations which are complemented by rain rates of total (detrital) Fe and sea ice indicating diatom abundances from five sediment cores across the Atlantic sector of the Southern Ocean covering the past 150,000 years. The results suggest that 10Be rain rates and authigenic U concentration cannot serve as quantitative paleoproductivity proxies because they have also been influenced by detrital particle fluxes in the case of 10Be and bulk sedimentation rates (sediment focussing) and deep water oxygenation in the case of U. The combined results of the remaining productivity proxies of this study (rain rates of biogenic opal and biogenic Ba in those sections without authigenic U) and other previously published proxy data from the Southern Ocean (231Pa/230Th and nitrogen isotopes) suggest that a combination of sea ice cover, shallow remineralization depth, and stratification of the glacial water column south of the present position of the Antarctic Polar Front and possibly Fe fertilization north of it have been the main controlling factors of export paleoproductivity in the Southern Ocean over the last 150,000 years. An overall glacial increase of export paleoproductivity is not supported by the data, implying that bioproductivity variations in the Southern Ocean are unlikely to have contributed to the major glacial atmospheric CO2 drawdown observed in ice cores. : For data of sites PS1772 and 2082 see Frank et al. (1996) dataset: doi:10.1594/PANGAEA.711823 |
format |
Article in Journal/Newspaper |
author |
Frank, Martin Gersonde, Rainer Rutgers van der Loeff, Michiel M Bohrmann, Gerhard Nürnberg, Christine Caroline Kubik, Peter W Suter, Martin Mangini, Augusto |
author_facet |
Frank, Martin Gersonde, Rainer Rutgers van der Loeff, Michiel M Bohrmann, Gerhard Nürnberg, Christine Caroline Kubik, Peter W Suter, Martin Mangini, Augusto |
author_sort |
Frank, Martin |
title |
Radionuclides in sediment cores of the Atlantic sector of the Southern Ocean, supplement to: Frank, Martin; Gersonde, Rainer; Rutgers van der Loeff, Michiel M; Bohrmann, Gerhard; Nürnberg, Christine Caroline; Kubik, Peter W; Suter, Martin; Mangini, Augusto (2000): Similar glacial and interglacial export bioproductivity in the Atlantic sector of the Southern Ocean: multiproxy evidence and implications for atmospheric CO2. Paleoceanography, 15(6), 642-658 |
title_short |
Radionuclides in sediment cores of the Atlantic sector of the Southern Ocean, supplement to: Frank, Martin; Gersonde, Rainer; Rutgers van der Loeff, Michiel M; Bohrmann, Gerhard; Nürnberg, Christine Caroline; Kubik, Peter W; Suter, Martin; Mangini, Augusto (2000): Similar glacial and interglacial export bioproductivity in the Atlantic sector of the Southern Ocean: multiproxy evidence and implications for atmospheric CO2. Paleoceanography, 15(6), 642-658 |
title_full |
Radionuclides in sediment cores of the Atlantic sector of the Southern Ocean, supplement to: Frank, Martin; Gersonde, Rainer; Rutgers van der Loeff, Michiel M; Bohrmann, Gerhard; Nürnberg, Christine Caroline; Kubik, Peter W; Suter, Martin; Mangini, Augusto (2000): Similar glacial and interglacial export bioproductivity in the Atlantic sector of the Southern Ocean: multiproxy evidence and implications for atmospheric CO2. Paleoceanography, 15(6), 642-658 |
title_fullStr |
Radionuclides in sediment cores of the Atlantic sector of the Southern Ocean, supplement to: Frank, Martin; Gersonde, Rainer; Rutgers van der Loeff, Michiel M; Bohrmann, Gerhard; Nürnberg, Christine Caroline; Kubik, Peter W; Suter, Martin; Mangini, Augusto (2000): Similar glacial and interglacial export bioproductivity in the Atlantic sector of the Southern Ocean: multiproxy evidence and implications for atmospheric CO2. Paleoceanography, 15(6), 642-658 |
title_full_unstemmed |
Radionuclides in sediment cores of the Atlantic sector of the Southern Ocean, supplement to: Frank, Martin; Gersonde, Rainer; Rutgers van der Loeff, Michiel M; Bohrmann, Gerhard; Nürnberg, Christine Caroline; Kubik, Peter W; Suter, Martin; Mangini, Augusto (2000): Similar glacial and interglacial export bioproductivity in the Atlantic sector of the Southern Ocean: multiproxy evidence and implications for atmospheric CO2. Paleoceanography, 15(6), 642-658 |
title_sort |
radionuclides in sediment cores of the atlantic sector of the southern ocean, supplement to: frank, martin; gersonde, rainer; rutgers van der loeff, michiel m; bohrmann, gerhard; nürnberg, christine caroline; kubik, peter w; suter, martin; mangini, augusto (2000): similar glacial and interglacial export bioproductivity in the atlantic sector of the southern ocean: multiproxy evidence and implications for atmospheric co2. paleoceanography, 15(6), 642-658 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2000 |
url |
https://dx.doi.org/10.1594/pangaea.735021 https://doi.pangaea.de/10.1594/PANGAEA.735021 |
long_lat |
ENVELOPE(-61.613,-61.613,-64.054,-64.054) |
geographic |
Antarctic Augusto Southern Ocean The Antarctic |
geographic_facet |
Antarctic Augusto Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Sea ice Southern Ocean |
op_relation |
https://dx.doi.org/10.1029/2000pa000497 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.735021 https://doi.org/10.1029/2000pa000497 |
_version_ |
1766275460734386176 |