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SOSiC SIGNED

Southern Ocean Silicon Cycling: combining views of the past and present using silicon isotopes

Total Cost €

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EC-Contrib. €

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Partnership

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 SOSiC project word cloud

Explore the words cloud of the SOSiC project. It provides you a very rough idea of what is the project "SOSiC" about.

zones    cycling    window    glacial    d30si    interglacial    suggest    markedly    biological    ig    isotopes    export    cycle    resolution    regions    subantarctic    last    allowed    timescales    resolved    data    atmosphere    exporting    sunlit    poorly    sediment    implicated    accumulation    varied    view    sparse    recovered    understand    collaborators    times    combined    silicon    extant    proxy    siliceous    too    ocean    linking    upwelling    biogeography    nutrients    seawater    si    marine    pump    zone    ing    vitally    vital    fronts    insights    dioxide    antarctic    complementary    climate    global    unprecedented    informed    composition    modern    records    supply    upper    maintaining    diatom    constraint    proxies    phytoplankton    pco2    cores    outgassing    waters    southern    isotope    stable    connection    co2    diatoms    reconstructions    opal    carbon    reflected    altering    plankton    150    rate    cycles    transport    surface    atmospheric    thermocline    deep    dynamics    nutrient   

Project "SOSiC" data sheet

The following table provides information about the project.

Coordinator
EIDGENOESSISCHE TECHNISCHE HOCHSCHULE ZUERICH 

Organization address
address: Raemistrasse 101
city: ZUERICH
postcode: 8092
website: https://www.ethz.ch/de.html

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 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.

# participants  country  role  EC contrib. [€] 
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
List of publications.
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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