Organic carbon abundance and stable isotope record of sediment core RC13-259 (Table 1)
We use the isotopic composition of carbon from organic matter enclosed within diatom frustules as a proxy for paleoproductivity and paleo-dissolved carbon dioxide concentrations in ocean surface waters. A Southern Ocean record from south of the Antarctic Polar Front and spanning 430,000 years of car...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.52708 2023-05-15T14:04:42+02:00 Organic carbon abundance and stable isotope record of sediment core RC13-259 (Table 1) Singer, Alex Shemesh, Aldo LATITUDE: -53.880000 * LONGITUDE: -4.930000 * DATE/TIME START: 1970-12-20T00:00:00 * DATE/TIME END: 1970-12-20T00:00:00 * MINIMUM DEPTH, sediment/rock: 0.20 m * MAXIMUM DEPTH, sediment/rock: 16.50 m 1995-12-15 text/tab-separated-values, 170 data points https://doi.pangaea.de/10.1594/PANGAEA.52708 https://doi.org/10.1594/PANGAEA.52708 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.52708 https://doi.org/10.1594/PANGAEA.52708 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Singer, Alex; Shemesh, Aldo (1995): Climatically linked carbon isotope variation during the past 430,000 years in Southern Ocean sediments. Paleoceanography, 10(2), 171-178, https://doi.org/10.1029/94PA03319 AGE Carbon organic total DEPTH sediment/rock PC Piston corer RC13 RC13-259 Robert Conrad δ13C organic carbon standard deviation Dataset 1995 ftpangaea https://doi.org/10.1594/PANGAEA.52708 https://doi.org/10.1029/94PA03319 2023-01-20T07:35:28Z We use the isotopic composition of carbon from organic matter enclosed within diatom frustules as a proxy for paleoproductivity and paleo-dissolved carbon dioxide concentrations in ocean surface waters. A Southern Ocean record from south of the Antarctic Polar Front and spanning 430,000 years of carbon isotopic variation in diatomaceous organic matter is presented for the first time. The most refractory diatomaceous organic matter fraction was extracted and analyzed to avoid problems associated with diagenesis. The results clearly indicate cyclic changes in organic carbon isotopic ratios, with 13C depleted values associated with all of the last five glacial periods, reflecting changes in surface water properties and primary productivity. Changes in dissolved carbon dioxide concentrations are the most probable cause of these cycles, but the possible effect of seawater pH changes cannot be excluded. Dataset Antarc* Antarctic Southern Ocean PANGAEA - Data Publisher for Earth & Environmental Science Antarctic Southern Ocean The Antarctic ENVELOPE(-4.930000,-4.930000,-53.880000,-53.880000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
AGE Carbon organic total DEPTH sediment/rock PC Piston corer RC13 RC13-259 Robert Conrad δ13C organic carbon standard deviation |
spellingShingle |
AGE Carbon organic total DEPTH sediment/rock PC Piston corer RC13 RC13-259 Robert Conrad δ13C organic carbon standard deviation Singer, Alex Shemesh, Aldo Organic carbon abundance and stable isotope record of sediment core RC13-259 (Table 1) |
topic_facet |
AGE Carbon organic total DEPTH sediment/rock PC Piston corer RC13 RC13-259 Robert Conrad δ13C organic carbon standard deviation |
description |
We use the isotopic composition of carbon from organic matter enclosed within diatom frustules as a proxy for paleoproductivity and paleo-dissolved carbon dioxide concentrations in ocean surface waters. A Southern Ocean record from south of the Antarctic Polar Front and spanning 430,000 years of carbon isotopic variation in diatomaceous organic matter is presented for the first time. The most refractory diatomaceous organic matter fraction was extracted and analyzed to avoid problems associated with diagenesis. The results clearly indicate cyclic changes in organic carbon isotopic ratios, with 13C depleted values associated with all of the last five glacial periods, reflecting changes in surface water properties and primary productivity. Changes in dissolved carbon dioxide concentrations are the most probable cause of these cycles, but the possible effect of seawater pH changes cannot be excluded. |
format |
Dataset |
author |
Singer, Alex Shemesh, Aldo |
author_facet |
Singer, Alex Shemesh, Aldo |
author_sort |
Singer, Alex |
title |
Organic carbon abundance and stable isotope record of sediment core RC13-259 (Table 1) |
title_short |
Organic carbon abundance and stable isotope record of sediment core RC13-259 (Table 1) |
title_full |
Organic carbon abundance and stable isotope record of sediment core RC13-259 (Table 1) |
title_fullStr |
Organic carbon abundance and stable isotope record of sediment core RC13-259 (Table 1) |
title_full_unstemmed |
Organic carbon abundance and stable isotope record of sediment core RC13-259 (Table 1) |
title_sort |
organic carbon abundance and stable isotope record of sediment core rc13-259 (table 1) |
publisher |
PANGAEA |
publishDate |
1995 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.52708 https://doi.org/10.1594/PANGAEA.52708 |
op_coverage |
LATITUDE: -53.880000 * LONGITUDE: -4.930000 * DATE/TIME START: 1970-12-20T00:00:00 * DATE/TIME END: 1970-12-20T00:00:00 * MINIMUM DEPTH, sediment/rock: 0.20 m * MAXIMUM DEPTH, sediment/rock: 16.50 m |
long_lat |
ENVELOPE(-4.930000,-4.930000,-53.880000,-53.880000) |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_source |
Supplement to: Singer, Alex; Shemesh, Aldo (1995): Climatically linked carbon isotope variation during the past 430,000 years in Southern Ocean sediments. Paleoceanography, 10(2), 171-178, https://doi.org/10.1029/94PA03319 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.52708 https://doi.org/10.1594/PANGAEA.52708 |
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.52708 https://doi.org/10.1029/94PA03319 |
_version_ |
1766275935087099904 |