Stable isotope record of bentic foraminifera in sediment cores of the eastern Pacific ...
Stable isotopes in benthic foraminifera from Pacific sediments are used to assess hypotheses of systematic shifts in the depth distribution of oceanic nutrients and carbon during the ice ages. The carbon isotope differences between ~1400 and ~3200 m depth in the eastern Pacific are consistently grea...
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ftdatacite:10.1594/pangaea.701404 2023-12-31T10:20:45+01:00 Stable isotope record of bentic foraminifera in sediment cores of the eastern Pacific ... Mix, Alan C Pisias, Nicklas G Zahn, Rainer Rugh, W D Lopez, Cody Nelson, K 1991 application/zip https://dx.doi.org/10.1594/pangaea.701404 https://doi.pangaea.de/10.1594/PANGAEA.701404 en eng PANGAEA https://dx.doi.org/10.1029/90pa02303 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 Piston corer RC13 V19 Robert Conrad Vema Supplementary Publication Series of Datasets article Collection 1991 ftdatacite https://doi.org/10.1594/pangaea.70140410.1029/90pa02303 2023-12-01T11:50:33Z Stable isotopes in benthic foraminifera from Pacific sediments are used to assess hypotheses of systematic shifts in the depth distribution of oceanic nutrients and carbon during the ice ages. The carbon isotope differences between ~1400 and ~3200 m depth in the eastern Pacific are consistently greater in glacial than interglacial maxima over the last ~370 kyr. This phenomenon of "bottom heavy" glacial nutrient distributions, which Boyle proposed as a cause of Pleistocene CO2 change, occurs primarily in the 1/100 and 1/41 kyr**-1 "Milankovitch" orbital frequency bands but appears to lack a coherent 1/23 kyr**-1 band related to orbital precession. Averaged over oxygen-isotope stages, glacial delta13C gradients from ~1400 to ~3200 m depth are 0.1 per mil greater than interglacial gradients. The range of extreme shifts is somewhat larger, 0.2 to 0.5 per mil . In both cases, these changes in Pacific delta13C distributions are much smaller than observed in shorter records from the North Atlantic. This may be too ... : Supplement to: Mix, Alan C; Pisias, Nicklas G; Zahn, Rainer; Rugh, W D; Lopez, Cody; Nelson, K (1991): Carbon 13 in Pacific deep and intermediate waters, 0-370 ka: implications for ocean circulation and Pleistocene CO2. Paleoceanography, 6(2), 205-226 ... Article in Journal/Newspaper North Atlantic DataCite Metadata Store (German National Library of Science and Technology) |
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Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Piston corer RC13 V19 Robert Conrad Vema |
spellingShingle |
Piston corer RC13 V19 Robert Conrad Vema Mix, Alan C Pisias, Nicklas G Zahn, Rainer Rugh, W D Lopez, Cody Nelson, K Stable isotope record of bentic foraminifera in sediment cores of the eastern Pacific ... |
topic_facet |
Piston corer RC13 V19 Robert Conrad Vema |
description |
Stable isotopes in benthic foraminifera from Pacific sediments are used to assess hypotheses of systematic shifts in the depth distribution of oceanic nutrients and carbon during the ice ages. The carbon isotope differences between ~1400 and ~3200 m depth in the eastern Pacific are consistently greater in glacial than interglacial maxima over the last ~370 kyr. This phenomenon of "bottom heavy" glacial nutrient distributions, which Boyle proposed as a cause of Pleistocene CO2 change, occurs primarily in the 1/100 and 1/41 kyr**-1 "Milankovitch" orbital frequency bands but appears to lack a coherent 1/23 kyr**-1 band related to orbital precession. Averaged over oxygen-isotope stages, glacial delta13C gradients from ~1400 to ~3200 m depth are 0.1 per mil greater than interglacial gradients. The range of extreme shifts is somewhat larger, 0.2 to 0.5 per mil . In both cases, these changes in Pacific delta13C distributions are much smaller than observed in shorter records from the North Atlantic. This may be too ... : Supplement to: Mix, Alan C; Pisias, Nicklas G; Zahn, Rainer; Rugh, W D; Lopez, Cody; Nelson, K (1991): Carbon 13 in Pacific deep and intermediate waters, 0-370 ka: implications for ocean circulation and Pleistocene CO2. Paleoceanography, 6(2), 205-226 ... |
format |
Article in Journal/Newspaper |
author |
Mix, Alan C Pisias, Nicklas G Zahn, Rainer Rugh, W D Lopez, Cody Nelson, K |
author_facet |
Mix, Alan C Pisias, Nicklas G Zahn, Rainer Rugh, W D Lopez, Cody Nelson, K |
author_sort |
Mix, Alan C |
title |
Stable isotope record of bentic foraminifera in sediment cores of the eastern Pacific ... |
title_short |
Stable isotope record of bentic foraminifera in sediment cores of the eastern Pacific ... |
title_full |
Stable isotope record of bentic foraminifera in sediment cores of the eastern Pacific ... |
title_fullStr |
Stable isotope record of bentic foraminifera in sediment cores of the eastern Pacific ... |
title_full_unstemmed |
Stable isotope record of bentic foraminifera in sediment cores of the eastern Pacific ... |
title_sort |
stable isotope record of bentic foraminifera in sediment cores of the eastern pacific ... |
publisher |
PANGAEA |
publishDate |
1991 |
url |
https://dx.doi.org/10.1594/pangaea.701404 https://doi.pangaea.de/10.1594/PANGAEA.701404 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://dx.doi.org/10.1029/90pa02303 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_doi |
https://doi.org/10.1594/pangaea.70140410.1029/90pa02303 |
_version_ |
1786831265334296576 |