| |  Online-Ressource |
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| Verfasst von: | Christl, Marcus [VerfasserIn]  |
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| | Lippold, Jörg [VerfasserIn] |
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| | Hofmann, Alexander [VerfasserIn] |
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| | Wacker, Lukas [VerfasserIn] |
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| | Lahaye, Yann [VerfasserIn] |
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| | Synal, Hans-Arno [VerfasserIn] |
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| Titel: | 231Pa/230Th |
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| Titelzusatz: | a proxy for upwelling off the coast of West Africa |
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| Verf.angabe: | Marcus Christl, Jörg Lippold, Alexander Hofmann, Lukas Wacker, Yann Lahaye, Hans-Arno Synal |
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| Jahr: | 2010 |
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| Umfang: | 4 S. |
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| Fussnoten: | Available online 12 October 2009 ; Im Titel ist "231" und "230" hochgestellt ; Gesehen am 21.03.2023 |
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| Titel Quelle: | Enthalten in: Nuclear instruments & methods in physics research / B |
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| Ort Quelle: | Amsterdam [u.a.] : Elsevier, 1984 |
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| Jahr Quelle: | 2010 |
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| Band/Heft Quelle: | 268(2010), 7, Seite 1159-1162 |
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| ISSN Quelle: | 1872-9584 |
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| Abstract: | 231Pa has widespread applications in the earth sciences including uranium series disequilibrium dating of carbonates and the reconstruction of ocean circulation or bio-productivity on glacial/interglacial timescales. Here we present the first 231Pa profile from a marine sediment core (GeoB3722) located in the large upwelling area off West Africa (Northern Cape Basin) measured with Accelerator Mass Spectrometry (AMS). Together with the Th and U-data (obtained with ICP-MS) 231Pa/230Th ratios were calculated covering the past 30,000yr. Our results indicate that site GeoB3722 was located in the wind driven upwelling area during glacial times while it abruptly turned into an open ocean area at about 14,000yr BP. A spatial shift of the large wind driven upwelling area off West Africa is consistent with the idea that atmospheric circulation patterns as well as ocean circulation dramatically changed at the last glacial interglacial transition. |
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| DOI: | doi:10.1016/j.nimb.2009.10.123 |
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| URL: | Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.
Volltext: https://doi.org/10.1016/j.nimb.2009.10.123 |
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| | Volltext: https://www.sciencedirect.com/science/article/pii/S0168583X09011720 |
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| | DOI: https://doi.org/10.1016/j.nimb.2009.10.123 |
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| Datenträger: | Online-Ressource |
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| Sprache: | eng |
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| Sach-SW: | AMS |
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| | Ocean circulation |
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| | Paleoceanography |
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| | Protactinium-231 |
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| | Upwelling |
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| K10plus-PPN: | 1839698810 |
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| Verknüpfungen: | → Zeitschrift |
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