Age determination and n-Alkane concentration of Arctic Ocean sediment cores
We have reconstructed the surface water environment of the Arctic Ocean over the last ~ 50,000 years using measurements of the organic nitrogen and carbon isotope ratios, carbonate and total organic carbon concentrations (TOC), and terrestrial biomarkers (lignin and long-chain n-alkanes) in four mul...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.847782 2024-09-15T17:50:37+00:00 Age determination and n-Alkane concentration of Arctic Ocean sediment cores Schubert, Carsten J Stein, Ruediger Calvert, Stephen E MEDIAN LATITUDE: 87.278007 * MEDIAN LONGITUDE: 104.931708 * SOUTH-BOUND LATITUDE: 86.241800 * WEST-BOUND LONGITUDE: 59.215000 * NORTH-BOUND LATITUDE: 87.626000 * EAST-BOUND LONGITUDE: 156.675700 * DATE/TIME START: 1991-08-13T00:00:00 * DATE/TIME END: 1991-09-02T00:00:00 2001 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.847782 https://doi.org/10.1594/PANGAEA.847782 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.847782 https://doi.org/10.1594/PANGAEA.847782 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Schubert, Carsten J; Stein, Ruediger; Calvert, Stephen E (2001): Tracking nutrient and productivity variations over the Last Deglaciation in the Arctic Ocean. Paleoceanography, 16(2), 199-211, https://doi.org/10.1029/2000PA000503 AWI_Paleo Paleoenvironmental Reconstructions from Marine Sediments @ AWI dataset publication series 2001 ftpangaea https://doi.org/10.1594/PANGAEA.84778210.1029/2000PA000503 2024-07-24T02:31:21Z We have reconstructed the surface water environment of the Arctic Ocean over the last ~ 50,000 years using measurements of the organic nitrogen and carbon isotope ratios, carbonate and total organic carbon concentrations (TOC), and terrestrial biomarkers (lignin and long-chain n-alkanes) in four multicores. Variations in nitrogen isotope ratios that are concordant with TOC and carbonate concentrations (representing foraminifera and excluding ice-rafted-debris) reflect differences in relative nutrient utilization of phytoplankton in the surface waters. However, d15N variations also appear to be dependent on the stratification of the water column and therefore potentially track the exchange of nutrients between deep and surface waters. Low Last Glacial Maximum (LGM) d15N values and higher Holocene values are opposite to those recorded in the Southern Ocean. The Arctic Ocean with higher nutrient utilization today compared to the LGM therefore acts as a counterpart to the Southern Ocean, although the global impact on carbon dioxide variations compared to the Southern Ocean is probably low. Other/Unknown Material Arctic Arctic Ocean Foraminifera* Phytoplankton Southern Ocean PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(59.215000,156.675700,87.626000,86.241800) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
AWI_Paleo Paleoenvironmental Reconstructions from Marine Sediments @ AWI |
spellingShingle |
AWI_Paleo Paleoenvironmental Reconstructions from Marine Sediments @ AWI Schubert, Carsten J Stein, Ruediger Calvert, Stephen E Age determination and n-Alkane concentration of Arctic Ocean sediment cores |
topic_facet |
AWI_Paleo Paleoenvironmental Reconstructions from Marine Sediments @ AWI |
description |
We have reconstructed the surface water environment of the Arctic Ocean over the last ~ 50,000 years using measurements of the organic nitrogen and carbon isotope ratios, carbonate and total organic carbon concentrations (TOC), and terrestrial biomarkers (lignin and long-chain n-alkanes) in four multicores. Variations in nitrogen isotope ratios that are concordant with TOC and carbonate concentrations (representing foraminifera and excluding ice-rafted-debris) reflect differences in relative nutrient utilization of phytoplankton in the surface waters. However, d15N variations also appear to be dependent on the stratification of the water column and therefore potentially track the exchange of nutrients between deep and surface waters. Low Last Glacial Maximum (LGM) d15N values and higher Holocene values are opposite to those recorded in the Southern Ocean. The Arctic Ocean with higher nutrient utilization today compared to the LGM therefore acts as a counterpart to the Southern Ocean, although the global impact on carbon dioxide variations compared to the Southern Ocean is probably low. |
format |
Other/Unknown Material |
author |
Schubert, Carsten J Stein, Ruediger Calvert, Stephen E |
author_facet |
Schubert, Carsten J Stein, Ruediger Calvert, Stephen E |
author_sort |
Schubert, Carsten J |
title |
Age determination and n-Alkane concentration of Arctic Ocean sediment cores |
title_short |
Age determination and n-Alkane concentration of Arctic Ocean sediment cores |
title_full |
Age determination and n-Alkane concentration of Arctic Ocean sediment cores |
title_fullStr |
Age determination and n-Alkane concentration of Arctic Ocean sediment cores |
title_full_unstemmed |
Age determination and n-Alkane concentration of Arctic Ocean sediment cores |
title_sort |
age determination and n-alkane concentration of arctic ocean sediment cores |
publisher |
PANGAEA |
publishDate |
2001 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.847782 https://doi.org/10.1594/PANGAEA.847782 |
op_coverage |
MEDIAN LATITUDE: 87.278007 * MEDIAN LONGITUDE: 104.931708 * SOUTH-BOUND LATITUDE: 86.241800 * WEST-BOUND LONGITUDE: 59.215000 * NORTH-BOUND LATITUDE: 87.626000 * EAST-BOUND LONGITUDE: 156.675700 * DATE/TIME START: 1991-08-13T00:00:00 * DATE/TIME END: 1991-09-02T00:00:00 |
long_lat |
ENVELOPE(59.215000,156.675700,87.626000,86.241800) |
genre |
Arctic Arctic Ocean Foraminifera* Phytoplankton Southern Ocean |
genre_facet |
Arctic Arctic Ocean Foraminifera* Phytoplankton Southern Ocean |
op_source |
Supplement to: Schubert, Carsten J; Stein, Ruediger; Calvert, Stephen E (2001): Tracking nutrient and productivity variations over the Last Deglaciation in the Arctic Ocean. Paleoceanography, 16(2), 199-211, https://doi.org/10.1029/2000PA000503 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.847782 https://doi.org/10.1594/PANGAEA.847782 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.84778210.1029/2000PA000503 |
_version_ |
1810292424371601408 |