Status: Bibliographieeintrag
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| |  Online-Ressource |
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| Verfasst von: | Spooner, Peter [VerfasserIn]  |
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| | Robinson, Laura F. [VerfasserIn] |
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| | Hemsing, Freya [VerfasserIn] |
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| | Morris, Paul [VerfasserIn] |
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| | Stewart, Joseph A. [VerfasserIn] |
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| Titel: | Extended calibration of cold-water coral Ba/Ca using multiple genera and co-located measurements of dissolved barium concentration |
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| Verf.angabe: | Peter T. Spooner, Laura F. Robinson, Freya Hemsing, Paul Morris, Joseph A. Stewart |
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| E-Jahr: | 2018 |
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| Jahr: | 13 September 2018 |
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| Umfang: | 11 S. |
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| Fussnoten: | Gesehen am 02.04.2020 |
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| Titel Quelle: | Enthalten in: Chemical geology |
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| Ort Quelle: | New York, NY [u.a.] : Elsevier, 1966 |
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| Jahr Quelle: | 2018 |
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| Band/Heft Quelle: | 499(2018), Seite 100-110 |
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| ISSN Quelle: | 1872-6836 |
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| Abstract: | Biological productivity and ocean circulation are both important oceanographic variables that control the distribution of dissolved barium in the ocean interior ([Ba]sw). The ability to accurately reconstruct [Ba]sw will provide key constraints on these processes in the past. The geochemistry of cold-water corals has the potential to unlock paleoceanographic records at spatial and temporal resolutions not available using other sedimentary archives. Previous studies have suggested that the Ba/Ca ratio of coral skeletons is linearly related to [Ba]sw. However, these efforts have used a limited number of species, sparse global seawater databases, or have not explicitly measured the Ba/Ca ratio. Here we investigate the Ba/Ca ratio in a well-constrained set of cold-water scleractinian (aragonitic) corals as a proxy for [Ba]sw, using 58 specimens from 7 coral genera along with co-located measurements of [Ba]sw. We find that traditional chemical cleaning procedures do not significantly affect the Ba/Ca ratio of cold-water coral skeletons, allowing rapid sample throughput. We also determine that intra-sample variation in Ba/Ca ratios can be reduced by using larger sample sizes (e.g. 20mg). By combining our results with existing data, we find that cold-water coral Ba/Ca is linearly related to [Ba]sw according to the relationship: Ba/Ca μmol/mol=[0.15±0.02] [Basw nmol/kg]+[2.5±1.4], (R2=0.7). We observe no species-specific ‘vital effects’ in cold-water coral Ba/Ca ratios, but site-specific effects could be a factor. Nevertheless, our results highlight the potential of Ba/Ca in cold-water corals to reconstruct biological and physical changes in the ocean interior. |
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| DOI: | doi:10.1016/j.chemgeo.2018.09.012 |
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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: https://doi.org/10.1016/j.chemgeo.2018.09.012 |
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| | Volltext: http://www.sciencedirect.com/science/article/pii/S0009254118304522 |
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| | DOI: https://doi.org/10.1016/j.chemgeo.2018.09.012 |
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| Datenträger: | Online-Ressource |
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| Sprache: | eng |
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| Sach-SW: | Ba/Ca |
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| | Barium |
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| | Calibration |
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| | Cold-water coral |
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| | Coral |
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| K10plus-PPN: | 1693824655 |
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| Verknüpfungen: | → Zeitschrift |
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Extended calibration of cold-water coral Ba/Ca using multiple genera and co-located measurements of dissolved barium concentration / Spooner, Peter [VerfasserIn]; 13 September 2018 (Online-Ressource)
68560621
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