Pliocene-Pleistocene alkenone, nitrogen and opal record of ODP Site 175-1082, supplement to: Etourneau, Johan; Martinez, Philippe; Blanz, Thomas; Schneider, Ralph R (2009): Pliocene–Pleistocene variability of upwelling activity, productivity, and nutrient cycling in the Benguela region. Geology, 37(10), 871-874
In this study we present combined high-resolution records of sea surface temperature (SST), phytoplankton productivity, and nutrient cycling in the Benguela Upwelling System (BUS) for the past 3.5 Ma. The SST record provided evidence that upwelling activity off Namibia mainly intensified ca. 2.4-2.0...
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ftdatacite:10.1594/pangaea.729407 2023-05-15T18:25:02+02:00 Pliocene-Pleistocene alkenone, nitrogen and opal record of ODP Site 175-1082, supplement to: Etourneau, Johan; Martinez, Philippe; Blanz, Thomas; Schneider, Ralph R (2009): Pliocene–Pleistocene variability of upwelling activity, productivity, and nutrient cycling in the Benguela region. Geology, 37(10), 871-874 Etourneau, Johan Martinez, Philippe Blanz, Thomas Schneider, Ralph R 2009 application/zip https://dx.doi.org/10.1594/pangaea.729407 https://doi.pangaea.de/10.1594/PANGAEA.729407 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1130/g25733a.1 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Composite Core Leg175 Joides Resolution Ocean Drilling Program ODP Supplementary Collection of Datasets Collection article 2009 ftdatacite https://doi.org/10.1594/pangaea.729407 https://doi.org/10.1130/g25733a.1 2022-02-08T16:02:21Z In this study we present combined high-resolution records of sea surface temperature (SST), phytoplankton productivity, and nutrient cycling in the Benguela Upwelling System (BUS) for the past 3.5 Ma. The SST record provided evidence that upwelling activity off Namibia mainly intensified ca. 2.4-2.0 Ma ago in response to the cooling of the Southern Ocean and the resultant strengthening of trade winds. As revealed by productivity-related proxies, BUS intensification led to a major transition in regional biological productivity when considering the termination of the Matuyama Diatom Maximum (a diatom high-production event). Major oceanic reorganization in the Benguela was accompanied by nutrient source changes, as indicated by a new nitrogen isotopic (delta15N) record that revealed a stepwise increase at ca. 2.4 and ca. 1.5 Ma ago. The change in source region likely resulted from significant changes in intermediate water formation tied to the reorganization of oceanic conditions in the Southern Ocean, which may have in turn mainly controlled the global ocean N cycle, and therefore the N isotopic composition of nutrients since 3.5 Ma ago. Article in Journal/Newspaper Southern Ocean DataCite Metadata Store (German National Library of Science and Technology) Southern Ocean |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Composite Core Leg175 Joides Resolution Ocean Drilling Program ODP |
spellingShingle |
Composite Core Leg175 Joides Resolution Ocean Drilling Program ODP Etourneau, Johan Martinez, Philippe Blanz, Thomas Schneider, Ralph R Pliocene-Pleistocene alkenone, nitrogen and opal record of ODP Site 175-1082, supplement to: Etourneau, Johan; Martinez, Philippe; Blanz, Thomas; Schneider, Ralph R (2009): Pliocene–Pleistocene variability of upwelling activity, productivity, and nutrient cycling in the Benguela region. Geology, 37(10), 871-874 |
topic_facet |
Composite Core Leg175 Joides Resolution Ocean Drilling Program ODP |
description |
In this study we present combined high-resolution records of sea surface temperature (SST), phytoplankton productivity, and nutrient cycling in the Benguela Upwelling System (BUS) for the past 3.5 Ma. The SST record provided evidence that upwelling activity off Namibia mainly intensified ca. 2.4-2.0 Ma ago in response to the cooling of the Southern Ocean and the resultant strengthening of trade winds. As revealed by productivity-related proxies, BUS intensification led to a major transition in regional biological productivity when considering the termination of the Matuyama Diatom Maximum (a diatom high-production event). Major oceanic reorganization in the Benguela was accompanied by nutrient source changes, as indicated by a new nitrogen isotopic (delta15N) record that revealed a stepwise increase at ca. 2.4 and ca. 1.5 Ma ago. The change in source region likely resulted from significant changes in intermediate water formation tied to the reorganization of oceanic conditions in the Southern Ocean, which may have in turn mainly controlled the global ocean N cycle, and therefore the N isotopic composition of nutrients since 3.5 Ma ago. |
format |
Article in Journal/Newspaper |
author |
Etourneau, Johan Martinez, Philippe Blanz, Thomas Schneider, Ralph R |
author_facet |
Etourneau, Johan Martinez, Philippe Blanz, Thomas Schneider, Ralph R |
author_sort |
Etourneau, Johan |
title |
Pliocene-Pleistocene alkenone, nitrogen and opal record of ODP Site 175-1082, supplement to: Etourneau, Johan; Martinez, Philippe; Blanz, Thomas; Schneider, Ralph R (2009): Pliocene–Pleistocene variability of upwelling activity, productivity, and nutrient cycling in the Benguela region. Geology, 37(10), 871-874 |
title_short |
Pliocene-Pleistocene alkenone, nitrogen and opal record of ODP Site 175-1082, supplement to: Etourneau, Johan; Martinez, Philippe; Blanz, Thomas; Schneider, Ralph R (2009): Pliocene–Pleistocene variability of upwelling activity, productivity, and nutrient cycling in the Benguela region. Geology, 37(10), 871-874 |
title_full |
Pliocene-Pleistocene alkenone, nitrogen and opal record of ODP Site 175-1082, supplement to: Etourneau, Johan; Martinez, Philippe; Blanz, Thomas; Schneider, Ralph R (2009): Pliocene–Pleistocene variability of upwelling activity, productivity, and nutrient cycling in the Benguela region. Geology, 37(10), 871-874 |
title_fullStr |
Pliocene-Pleistocene alkenone, nitrogen and opal record of ODP Site 175-1082, supplement to: Etourneau, Johan; Martinez, Philippe; Blanz, Thomas; Schneider, Ralph R (2009): Pliocene–Pleistocene variability of upwelling activity, productivity, and nutrient cycling in the Benguela region. Geology, 37(10), 871-874 |
title_full_unstemmed |
Pliocene-Pleistocene alkenone, nitrogen and opal record of ODP Site 175-1082, supplement to: Etourneau, Johan; Martinez, Philippe; Blanz, Thomas; Schneider, Ralph R (2009): Pliocene–Pleistocene variability of upwelling activity, productivity, and nutrient cycling in the Benguela region. Geology, 37(10), 871-874 |
title_sort |
pliocene-pleistocene alkenone, nitrogen and opal record of odp site 175-1082, supplement to: etourneau, johan; martinez, philippe; blanz, thomas; schneider, ralph r (2009): pliocene–pleistocene variability of upwelling activity, productivity, and nutrient cycling in the benguela region. geology, 37(10), 871-874 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2009 |
url |
https://dx.doi.org/10.1594/pangaea.729407 https://doi.pangaea.de/10.1594/PANGAEA.729407 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_relation |
https://dx.doi.org/10.1130/g25733a.1 |
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.729407 https://doi.org/10.1130/g25733a.1 |
_version_ |
1766206171951136768 |