SOSiC SIGNED
Southern Ocean Silicon Cycling: combining views of the past and present using silicon isotopes
Total Cost €
0EC-Contrib. €
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Project "SOSiC" data sheet
The following table provides information about the project.
| Coordinator |
EIDGENOESSISCHE TECHNISCHE HOCHSCHULE ZUERICH
Organization address contact info |
| Coordinator Country | Switzerland [CH] |
| Project website | https://www.ethz.ch/en/utils/search.html |
| Total cost | 187˙419 € |
| EC max contribution | 187˙419 € (100%) |
| Programme |
1. H2020-EU.1.3.2. (Nurturing excellence by means of cross-border and cross-sector mobility) |
| Code Call | H2020-MSCA-IF-2015 |
| Funding Scheme | MSCA-IF-EF-ST |
| Starting year | 2016 |
| Duration (year-month-day) | from 2016-04-01 to 2018-03-31 |
Partnership
Take a look of project's partnership.
| # | ||||
|---|---|---|---|---|
| 1 | EIDGENOESSISCHE TECHNISCHE HOCHSCHULE ZUERICH | CH (ZUERICH) | coordinator | 187˙419.00 |
Map
Project objective
The Southern Ocean (SO) is the main connection between the sunlit surface and the nutrient- and carbon-rich deep ocean. Deep waters are brought to the surface here, resulting in outgassing of carbon dioxide (CO2) and providing nutrients to the global surface ocean. The SO thus has great importance for the carbon cycle and marine cycles of nutrients, most markedly that of silicon (Si). Si is vitally required by diatoms, siliceous phytoplankton that are important in exporting carbon from the surface ocean and maintaining the ocean’s biological pump, linking the Si and carbon cycles. The SO is the main window via which the ocean exchanges carbon with the atmosphere, and has been implicated in altering atmospheric pCO2 over glacial/interglacial (G/IG) cycles. SO Si cycling has also varied over G/IG timescales, reflected by changes in the accumulation rate and silicon stable isotope composition (d30Si) of diatom opal recovered from sediment cores. These proxies suggest that changes to SO nutrient dynamics allowed it to export Si to the upper ocean in glacial times, with widespread consequences for plankton biogeography, carbon cycling and climate. The d30Si proxy is a vital constraint in these reconstructions, but while extant records demonstrate its potential, they are too sparse and poorly-resolved to allow robust conclusions. Our goal is a step change in our understanding of SO cycling of Si and its isotopes, both in the present and over G/IG cycles. We aim to: - Study the seawater d30Si distribution across the fronts of the SO, in order to better understand modern Si transport between the regions of upwelling (Antarctic zone) and thermocline supply (Subantarctic zone); - Produce high-resolution diatom opal d30Si records from sediment cores in the Antarctic and Subantarctic zones that, informed by insights from the modern ocean and combined with complementary data from collaborators, will provide an unprecedented view of SO Si cycling over the last 150,000 years.
Publications
| year | authors and title | journal | last update |
|---|---|---|---|
| 2018 |
Jill N. Sutton, Luc André, Damien Cardinal, Daniel J. Conley, Gregory F. de Souza, Jonathan Dean, Justin Dodd, Claudia Ehlert, Michael J. Ellwood, Patrick J. Frings, Patricia Grasse, Katharine Hendry, Melanie J. Leng, Panagiotis Michalopoulos, Virginia N. Panizzo, George E. A. Swann A Review of the Stable Isotope Bio-geochemistry of the Global Silicon Cycle and Its Associated Trace Elements published pages: , ISSN: 2296-6463, DOI: 10.3389/feart.2017.00112 |
Frontiers in Earth Science 5 | 2019-06-13 |
| 2018 |
Gregory F. de Souza, Samar P. Khatiwala, Mathis P. Hain, Susan H. Little, Derek Vance On the origin of the marine zinc–silicon correlation published pages: 22-34, ISSN: 0012-821X, DOI: 10.1016/j.epsl.2018.03.050 |
Earth and Planetary Science Letters 492 | 2019-06-13 |
| 2018 |
Elvira Bura-Nakić, Morten B. Andersen, Corey Archer, Gregory F. de Souza, Marija Marguš, Derek Vance Coupled Mo-U abundances and isotopes in a small marine euxinic basin: Constraints on processes in euxinic basins published pages: 212-229, ISSN: 0016-7037, DOI: 10.1016/j.gca.2017.10.023 |
Geochimica et Cosmochimica Acta 222 | 2019-06-13 |
| 2017 |
Patricia Grasse, Mark A. Brzezinski, Damien Cardinal, Gregory F. de Souza, Per Andersson, Ivia Closset, Zhimian Cao, Minhan Dai, Claudia Ehlert, Nicolas Estrade, Roger François, Martin Frank, Guibin Jiang, Janice L. Jones, Ellen Kooijman, Qian Liu, Dawei Lu, Katharina Pahnke, Emanuel Ponzevera, Melanie Schmitt, Xiaole Sun, Jill N. Sutton, François Thil, Dominique Weis, Florian Wetzel, Anyu Zhang, Jing Zhang, Zhouling Zhang GEOTRACES inter-calibration of the stable silicon isotope composition of dissolved silicic acid in seawater published pages: 562-578, ISSN: 0267-9477, DOI: 10.1039/c6ja00302h |
Journal of Analytical Atomic Spectrometry 32/3 | 2019-06-13 |
| 2017 |
Derek Vance, Susan H. Little, Gregory F. de Souza, Samar Khatiwala, Maeve C. Lohan, Rob Middag Silicon and zinc biogeochemical cycles coupled through the Southern Ocean published pages: 202-206, ISSN: 1752-0894, DOI: 10.1038/NGEO2890 |
Nature Geoscience 10/3 | 2019-06-13 |
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