GEOTRACES Science Highlights
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– Artificial intelligence helps investigate the oceanic zinc cycle
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What explains the hitherto mysterious correlation between zinc and silicon, an element not involved in the zinc cycle? Roshan and co-workers used an artificial neural network to produce a global climatology of dissolved Zn concentration, the first such global climatology of a trace metal…
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– The residence times of trace elements determined in the surface Arctic Ocean during the 2015 US Arctic GEOTRACES expedition
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Data collected during the US Arctic GEOTRACES expedition in 2015 were used to estimate the mean residence time of dissolved trace elements (iron-Fe, manganese-Mn, nickel-Ni, cadmium-Cd, sinc-Zn, copper-Cu, lead-Pb, vanadium-V) in surface water with respect to atmospheric deposition…
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– Important spatial variation of the Particulate Organic Carbon export along the GEOVIDE section in the North Atlantic Ocean
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Based on the thorium-234 isotopes and the Particulate Organic Carbon/Thorium ratios measured in small and large particles collected at 11 stations along the GEOVIDE section (GA01) using in situ pumps, exported POC flux relative the surface primary production were determined by Lemaitre and colleagues…
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– Cadmium isotopes, tracers of the cadmium sequestration as cadmium sulphide in oxygen minimum zone?
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The linear relationship between the seawater cadmium and phosphate dissolved concentrations lead to use the cadmium/calcium imprinted in calcareous archives to reconstruct the past phosphate distributions. However, variations in the cadmium/phosphate ratio between different water masses and within vertical oceanic profiles were recently identified…
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– New BioGEOTRACES data sets: Connecting pieces of the microbial biogeochemical puzzle
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Two recent papers published in Scientific Data describes two new, large-scale biological data sets that will facilitate studies aimed at understanding how microbes and metals relate to one another. Collected on four different sets of GEOTRACES cruises, these papers report the public availability of hundreds of single cell genomes and microbial community metagenomes…
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– Local geologies imprint the Antarctic Bottom Water neodymium isotopic signatures
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Dissolved neodymium isotopes and concentrations were measured at six stations in the Australian sector of the Southern Ocean, targeting the study of the Adelie Land Bottom Water, a variety of Antarctic Bottom Water formed off the Adélie Land coast of East Antarctica…
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GEOTRACES News
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– Elements Magazine issue devoted to GEOTRACES research
The Elements Magazine December 2018 issue is devoted to GEOTRACES research. The magazine’s overview of this issue announces:
This issue will introduce the reader to the fascinating exploration of the big questions in ocean science using the chemistry of the infinitely small in seawater...
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Marine Biogeochemistry of Trace Elements and Their Isotopes
Catherine Jeandel, Zanna Chase, and Vanessa Hatje – Guest Editors
Download the table of contents
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– Successful joint GEOTRACES/PAGES synthesis workshop: Trace element and isotope proxies in paleoceanography
Sixty researchers from the PAGES and the GEOTRACES communities participated to an intensive workshop from the 3rd to the 5th of December in Aix en Provence, France. The aim of the workshop was to conduct open discussions on the applicability and scientific gaps regarding the use of some proxies exploited to infer past circulation, surface productivity and particle fluxes…
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Picture: Joint GEOTRACES/PAGES Workshop participants. Click here to view the picture larger.
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– Featured Best Practice –
Include “GEOTRACES” in either the title, abstract or summary of your GEOTRACES publications.
>> To ensure that your publications are included in the GEOTRACES publication database.
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GEOTRACES in Numbers
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109 |
» Section cruises completed:
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40 |
» Peer-reviewed papers:
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1177
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GEOTRACES Dates
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– Cruises:
15 December 2018 – 7 February 2019, PS117 HAFOS Process Study (GApr12), Southern Ocean (Lazarev Sea and Weddell Sea).
12 March 2019 – 05 April 2019, IN2019_V02 Process Study (GIpr08), Southern Ocean (East Indian Sector).
25 April 2019 – 10 June 2019, KK1902 GEOTRACES Section Cruise (GP09), North West Pacific.
31 October 2019 – 06 December 2019, GEOTRACES TONGA Process Study (GPpr14), Western Tropical South Pacific.
– Forthcoming GEOTRACES or GEOTRACES related Workshops:
11 – 13 February 2019, 7th Kaplan Symposium: Tracers in the Sea, Eilat, Israel.
– Forthcoming GEOTRACES meetings:
11 – 12 June 2019, GEOTRACES Standards & Intercalibration Committee, Norfolk, USA.
7 – 8 September 2019, GEOTRACES Data Management Committee, Hobart, Tasmania, Australia.
9 – 11 September 2019, GEOTRACES Scientific Steering Committee, Hobart, Tasmania, Australia.
– Forthcoming GEOTRACES Special Sessions:
23 February – 2 March 2019, ASLO 2019, Aquatic Sciences Meeting, San Juan, Puerto Rico.
18 – 23 August 2019, Goldschmidt 2019, Barcelona.
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Access the GEOTRACES Calendar
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Training materials available!
SCOR WG 146 has published four lectures on marine radiochemistry freely available to all! Click here to access these lectures.
Did you notice the section “lectures and presentations” on the GEOTRACES webpage? Check the resources available here and share your own training materials!
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Latest Publications
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– Black, E. E., Lam, P. J., Lee, J. ‐M., & Buesseler, K. O. (2018). Insights from the 238U‐ 234Th Method into the Coupling of Biological Export and the Cycling of Cadmium, Cobalt, and Manganese in the Southeast Pacific Ocean. Global Biogeochemical Cycles. DOI: 10.1029/2018GB005985
– Niedermiller, J., & Baskaran, M. (2019). Comparison of the scavenging intensity, remineralization and residence time of 210 Po and 210 Pb at key zones (biotic, sediment-water and hydrothermal) along the East Pacific GEOTRACES transect. Journal of Environmental Radioactivity, 198, 165–188. DOI: 10.1016/j.jenvrad.2018.12.016
– Vassileva, E., Irena, W., Orani, A. M., & Quétel, C. (2019). Off-line preconcentration and ICP-SFMS simultaneous determination of Cd, Co, Cu, Mn, Ni, Pb and Zn mass fractions in seawater: Procedure validation. Spectrochimica Acta Part B: Atomic Spectroscopy. DOI: 10.1016/J.SAB.2019.01.001
– Wefing, A.-M., Christl, M., Vockenhuber, C., van der Loeff, M. R., & Casacuberta, N. (2019). Tracing Atlantic waters using 129 I and 236 U in the Fram Strait in 2016. Journal of Geophysical Research: Oceans. DOI: 10.1029/2018JC014399
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| Acces the GEOTRACES Database |
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Banner 3D scene figure: 3D scene showing the distribution of dissolved iron in the Atlantic Ocean. Source: Schlitzer, R., eGEOTRACES – Electronic Atlas of GEOTRACES Sections and Animated 3D Scenes, http://www.egeotraces.org, 2017.
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