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| Verfasst von: | Costa, Kassandra [VerfasserIn]  |
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| | Hayes, Christopher T. [VerfasserIn] |
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| | Anderson, Robert F. [VerfasserIn] |
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| | Pavia, Frank J. [VerfasserIn] |
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| | Bausch, Alexandra [VerfasserIn] |
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| | Deng, Feifei [VerfasserIn] |
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| | Dutay, Jean-Claude [VerfasserIn] |
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| | Geibert, Walter [VerfasserIn] |
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| | Heinze, Christoph [VerfasserIn] |
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| | Henderson, Gideon [VerfasserIn] |
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| | Hillaire‐Marcel, Claude [VerfasserIn] |
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| | Hoffmann, Sharon [VerfasserIn] |
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| | Jaccard, Samuel L. [VerfasserIn] |
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| | Jacobel, Allison W. [VerfasserIn] |
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| | Kienast, Stephanie S. [VerfasserIn] |
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| | Kipp, Lauren [VerfasserIn] |
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| | Lerner, Paul [VerfasserIn] |
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| | Lippold, Jörg [VerfasserIn] |
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| | Lund, David [VerfasserIn] |
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| | Marcantonio, Franco [VerfasserIn] |
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| | McGee, David [VerfasserIn] |
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| | McManus, Jerry F. [VerfasserIn] |
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| | Mekik, Figen [VerfasserIn] |
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| | Middleton, Jennifer L. [VerfasserIn] |
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| | Missiaen, Lise [VerfasserIn] |
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| | Not, Christelle [VerfasserIn] |
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| | Pichat, Sylvain [VerfasserIn] |
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| | Robinson, Laura F. [VerfasserIn] |
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| | Rowland, George H. [VerfasserIn] |
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| | Roy‐Barman, Matthieu [VerfasserIn] |
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| | Tagliabue, Alessandro [VerfasserIn] |
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| | Torfstein, Adi [VerfasserIn] |
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| | Winckler, Gisela [VerfasserIn] |
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| | Zhou, Yuxin [VerfasserIn] |
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| Titel: | 230Th normalization |
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| Titelzusatz: | new insights on an essential tool for quantifying sedimentary fluxes in the modern and quaternary ocean |
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| Verf.angabe: | Kassandra M. Costa, Christopher T. Hayes, Robert F. Anderson, Frank J. Pavia, Alexandra Bausch, Feifei Deng, Jean-Claude Dutay, Walter Geibert, Christoph Heinze, Gideon Henderson, Claude Hillaire‐Marcel, Sharon Hoffmann, Samuel L. Jaccard, Allison W. Jacobel, Stephanie S. Kienast, Lauren Kipp, Paul Lerner, Jörg Lippold, David Lund, Franco Marcantonio, David McGee, Jerry F. McManus, Figen Mekik, Jennifer L. Middleton, Lise Missiaen, Christelle Not, Sylvain Pichat, Laura F. Robinson, George H. Rowland, Matthieu Roy‐Barman, Alessandro Tagliabue, Adi Torfstein, Gisela Winckler, and Yuxin Zhou |
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| E-Jahr: | 2020 |
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| Jahr: | 27 January 2020 |
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| Umfang: | 36 S. |
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| Fussnoten: | Im Titel ist "230" als Hochzahl dargestellt ; Gesehen am 24.11.2020 |
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| Titel Quelle: | Enthalten in: Paleoceanography and paleoclimatology |
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| Ort Quelle: | Hoboken, NJ : Wiley, 2018 |
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| Jahr Quelle: | 2020 |
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| Band/Heft Quelle: | 35(2020,2) Artikel-Nummer 2019PA003820, 36 Seiten |
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| ISSN Quelle: | 2572-4525 |
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| Abstract: | 230Th normalization is a valuable paleoceanographic tool for reconstructing high-resolution sediment fluxes during the late Pleistocene (last 500,000 years). As its application has expanded to ever more diverse marine environments, the nuances of 230Th systematics, with regard to particle type, particle size, lateral advective/diffusive redistribution, and other processes, have emerged. We synthesized over 1000 sedimentary records of 230Th from across the global ocean at two time slices, the late Holocene (0-5,000 years ago, or 0-5 ka) and the Last Glacial Maximum (18.5-23.5 ka), and investigated the spatial structure of 230Th-normalized mass fluxes. On a global scale, sedimentary mass fluxes were significantly higher during the Last Glacial Maximum (1.79-2.17 g/cm2kyr, 95% confidence) relative to the Holocene (1.48-1.68 g/cm2kyr, 95% confidence). We then examined the potential confounding influences of boundary scavenging, nepheloid layers, hydrothermal scavenging, size-dependent sediment fractionation, and carbonate dissolution on the efficacy of 230Th as a constant flux proxy. Anomalous 230Th behavior is sometimes observed proximal to hydrothermal ridges and in continental margins where high particle fluxes and steep continental slopes can lead to the combined effects of boundary scavenging and nepheloid interference. Notwithstanding these limitations, we found that 230Th normalization is a robust tool for determining sediment mass accumulation rates in the majority of pelagic marine settings (>1,000 m water depth). |
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| DOI: | doi:10.1029/2019PA003820 |
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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 ; Verlag ; Resolving-System: https://dx.doi.org/https://doi.org/10.1029/2019PA003820 |
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| | Volltext: https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2019PA003820 |
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| | DOI: https://doi.org/10.1029/2019PA003820 |
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| Datenträger: | Online-Ressource |
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| Sprache: | eng |
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| Sach-SW: | GEOTRACES |
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| | Holocene |
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| | LGM |
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| | Sediment flux |
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| | Thorium |
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| K10plus-PPN: | 174090866X |
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| Verknüpfungen: | → Zeitschrift |
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230Th normalization / Costa, Kassandra [VerfasserIn]; 27 January 2020 (Online-Ressource)
