GEOTRACES Science Highlights
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– Field data allow constraining total mercury budget
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Thanks to recent measurements during several oceanographic expeditions, among them GEOTRACES cruises, estimates of the total amount and spatial distribution of anthropogenic mercury in the global ocean were substantially improved...
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– Overview of the dissolved iron, manganese and aluminium distributions along the North Atlantic GEOTRACES GA03 section
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Three trace elements distributions (iron, manganese and aluminium) help to constrain the sources of chemical elements in the North Atlantic Ocean. Atmospheric, Mediterranean Sea and margin inputs are confirmed while the importance of the hydrothermal venting is revealed…
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– Organic copper complexation may stabilise seawater stable copper isotopic composition
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Three deep-sea profiles were produced for the analysis of copper (Cu) concentration, along a transect covering very different biogeochemical regions: the oligotrophic North Tasman Sea (30ºS), the Tasman Front (40°S) and the productive waters of the Southern Ocean in the south (46°S)…
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– A new model of the oceanic aluminium distribution
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Taking into account most of the parameters that govern any trace element’s oceanic behaviour is a challenge, given their number and complexity. Marco van Hulten and co-workers propose here the most complete model ever written for the oceanic aluminium (Al) distribution…
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– A geochemical-physical coupled approach to study phytoplankton plume dynamics off the Crozet Islands (Southern Ocean)
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Interaction of the currents with the sediments deposited on the margins of the Crozet Islands (Southern Ocean) contributes to the supply of iron and other micronutrients to marine waters. This natural fertilization feeds a phytoplankton bloom that was object of study of the KEOPS 2 GEOTRACES process study…
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GEOTRACES News
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– 2014 GEOTRACES Meetings in South Africa
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The GEOTRACES Scientific Steering Committee (SSC) meeting and the Data Management Committee (DMC) meeting will be held from 6th to 10th October 2014 in Stellenbosch, Cape Town, South Africa. The meetings are hosted by Prof. Alakendra Roychoudhury of the University of Stellenbosch.
On the occasion of the meetings, several GEOTRACES activities are also organised. It comprises outreach activities, with a presentation of the 2014 GEOTRACES Intermediate Data Product (illustrated by several exciting highlights on results obtained from the first GEOTRACES cruises) at the Western Cape Branch of the Geological Society of South Africa in Cape Town (download the flyer); scientific activities, with several DMC and SSC members joining the South African project SOCCO in an opportunistic workshop “The Seasonal Dynamics of Iron supply, biological consumption and cycling in the Southern Ocean” and, capacity building activities, with scientific exchanges between iron chemists around iron clean sampling systems.
 Picture: Class-10 Trace Clean laboratory (Earth Sciences, Stellenbosch University) with South African GEOTRACES scientists (Left to Right – Dr. Susanne Fietz, Miss Natasha von Horsten, Prof. Alakendra Roychoudhury and Dr. Thato Mtshali)
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GEOTRACES in Numbers
» Cruises completed: |
51 |
» Section cruises completed:
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23 |
» Stations completed:
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732 |
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GEOTRACES Dates
– Forthcoming GEOTRACES Meetings:
6 – 7 October 2014, GEOTRACES Data Management Committee Meeting, Stellenbosch, Cape Town, South Africa.
8 – 10 October 2014, GEOTRACES Scientific Steering Committee, Stellenbosch, Cape Town, South Africa.
– Forthcoming GEOTRACES Special Sessions:
27 – 31 October 2014, 24th Earth Sciences meeting, Pau, France.
15 – 19 December 2014, American Geophysical Union Fall 2014 Meeting, San Francisco, California, USA.
22 – 27 February 2015, ASLO 2015, Aquatic Sciences Meeting, Granada, Spain.
– Other Relevant Events:
5 – 9 October 2014, DISCO and PODS Dissertation Symposiums, Hawaii, USA.
16 – 26 October 2014, PICES 2014 Annual Meeting, Yeosu, Korea.
17 – 21 November 2014, 2nd International Ocean Research Conference: One Planet, One Ocean, Barcelona, Spain.
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Access the GEOTRACES Calendar |
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Latest Publications
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– Lamborg, C. H., Hammerschmidt, C. R., Bowman, K. L., Swarr, G. J., Munson, K. M., Ohnemus, D. C., Phoebe J. Lam, Lars-Eric Heimbürger, Micha J. A. Rijkenberg, Saito, M. A. (2014). A global ocean inventory of anthropogenic mercury based on water column measurements. Nature, 512(7512), 65–68. doi:10.1038/nature13563.
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– Wang, B.-S., Lee, C.-P., & Ho, T.-Y. (2014). Trace metal determination in natural waters by automated solid phase extraction system and ICP-MS: the influence of low level Mg and Ca. Talanta, 128, 337–44. doi:10.1016/j.talanta.2014.04.077.
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– Grenier, M., Jeandel, C., & Cravatte, S. (2014). From the subtropics to the equator in the Southwest Pacific: Continental material fluxes quantified using neodymium data along modeled thermocline water pathways. Journal of Geophysical Research: Oceans, 119(6), 3948–3966. doi:10.1002/2013JC009670.
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– Abualhaija, M. M., & van den Berg, C. M. G. (2014). Chemical speciation of iron in seawater using catalytic cathodic stripping voltammetry with ligand competition against salicylaldoxime. Marine Chemistry, 164, 60–74. doi: 10.1016/j.marchem.2014.06.005.
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– Achterberg, E. P. (2014). Grand challenges in marine biogeochemistry. Frontiers in Marine Science, 1, 7. doi:10.3389/fmars.2014.00007.
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– Thompson, C. M., & Ellwood, M. J. (2014). Dissolved copper isotope biogeochemistry in the Tasman Sea, SW Pacific Ocean. Marine Chemistry, 165, 1–9. doi:10.1016/j.marchem.2014.06.009.
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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, 2014. |