GEOTRACES Science Highlights
|
|
– Testament of the efficiency of environmental policies
 |
Human activities, such as the combustion of leaded petrol, emissions from non-ferrous metal smelting, coal combustion and waste incineration constitute major environmental lead (Pb) sources during the past century. This resulted in a considerable increase of anthropogenic Pb in the surface and deep waters of the North Atlantic, large enough to mask the natural lead signal…
|
|
Read More
|
|
|
– Lithogenic influence from the Hawaiian Islands detectable up to Station ALOHA surface waters
 |
By coupling neodymium and radium isotopes and Rare Earth Element signals, Henning Fröllje and co-workers show that the coastal Hawaiian waters are affected by a prominent lithogenic influence from the Hawaiian Islands…
|
|
Read More
|
|
|
– Inference about rates of thorium and particle cycling in the ocean water column
 |
Insoluble thorium (Th) isotopes are particle reactive while their radioactive parents are fairly soluble. This difference of behaviour has allowed chemical oceanographers to use Th isotopes to develop understanding about the scavenging of particle reactive elements and the cycling of particles in the water column. However, many prior models rely on numerous assumptions…
|
|
Read More
|
|
|
– Hydrothermalism: a major contributor to the oceanic inventory of dissolved zinc
 |
High-quality dataset of dissolved zinc (Zn) from the US GEOTRACES EPZT cruise (GP16 section) allows Roshan and co-workers to revisit the oceanic budget of dissolved Zn. These investigators have observed a basin-scale transport of mantle-derived dissolved Zn from the hydrothermal vents of the East Pacific Rise…
|
|
Read More
|
|
GEOTRACES News
|
|
– Biogeochemical cycling of trace elements: very successful workshop!
More than 100 investigators from 12 nations met at the Lamont-Doherty Earth Observatory in Palisades New York, USA, on 1 – 4 August 2016 for a synthesis workshop on the Biogeochemical Cycling of Trace Elements within the Ocean.
The workshop, focused on setting priorities for exploiting GEOTRACES data to advance scientific objectives at the interface between marine geochemistry and marine ecology, was jointly sponsored by the GEOTRACES Program and by the Ocean Carbon and Biochemistry activity of the U.S. Carbon Cycle Science Program.
The plenary presentations from the Workshop are posted on the Workshop website. They can be opened and downloaded directly from the agenda.
Read More
– 2016 GEOTRACES Scientific Steering Committee Meeting held in Toulouse
The GEOTRACES Scientific Steering Committee (SSC) was held from 14-16 September at the LEGOS (University Paul Sabatier, Toulouse, France). The meeting was hosted by the GEOTRACES International Project Office.
Among the topics for dicussion there was the review of the status of the next GEOTRACES Intermediate Data Product (IDP2017) as well as the details of its release at the Goldschmidt Conference (13-17 August 2017, Paris, France).
– Countdown to GEOTRACES IDP2017:
|
| |
|
|
|
GEOTRACES in Numbers
| » Cruises completed: |
93 |
» Section cruises completed:
|
33 |
» Stations completed:
|
999
|
» Peer-reviewed papers:
|
720
|
|
| |
|
GEOTRACES Dates
|
– Cruises:
17 January – 20 February 2017, Section Cruise (GI10), Arabian Sea, Bay of Bengal and Indian Ocean.
15 March – 28 April 2017, HERMINE Process Study (GApr07), Mid Atlantic Ridge.
23 June – 07 July 2017, Section Cruise (GP02bis), North Pacific Ocean.
27 June – 13 August 2017, ZIPLOC Process Study (GApr08), Tropical Atlantic.
– Forthcoming GEOTRACES Workshops:
January 2017, East Asia GEOTRACES Workshop, Hokkaido University, Sapporo, Japan. (more details will be available soon)
– Forthcoming GEOTRACES meetings:
23 – 26 January 2017, GEOTRACES Standards and Intercalibration Committee, London, UK.
16 – 17 September 2017, GEOTRACES Data Management Committee, Salvador, Bahia, Brazil.
18 – 20 September 2017, GEOTRACES Scientific Steering Committee, Salvador, Bahia, Brazil.
– Forthcoming GEOTRACES Special Sessions:
5 – 9 November 2016, CBO 2016, Congresso Brasileiro de Oceanografia, Salvador – Bahia, Brazil.
9 – 11 January 2017, Third Xiamen Symposium on Marine Environmental Sciences (XMAS), Xiamen, China.
26 February – 3 March 2017, ASLO 2017, Aquatic Sciences Meeting, Honolulu, Hawaii, USA.
– Important Deadline:
1 December 2016, Submit your data for IDP2017!
|
Access the GEOTRACES Calendar
|
|
| |
Latest Publications
|
|
– Bridgestock, L., van de Flierdt, T., Rehkämper, M., Paul, M., Middag, R., Milne, A., Lohan, M.C., Baker, A.R., Chance, R., Khondoker, R., Strekopytov, S., Humphreys-Williams, E., Achterberg, E.P., Rijkenberg, M.J.A., Gerringa, L. J.A., de Baar, H. J. W. (2016). Return of naturally sourced Pb to Atlantic surface waters. Nature Communications, 7, 12921.doi: 10.1038/ncomms12921.
|
| |
|
– Aggarwal, S. K. (2016). A review on the mass spectrometric analysis of thorium. Radiochimica Acta, 104(7). doi: 10.1515/ract-2015-2559.
|
| |
|
– Margolin, A. R., Gerringa, L. J. A., Hansell, D. A., & Rijkenberg, M. J. A. (2016). Net removal of dissolved organic carbon in the anoxic waters of the Black Sea. Marine Chemistry, 183, 13–24. doi: 10.1016/j.marchem.2016.05.003.
|
| |
|
– Turner, D. R., Achterberg, E. P., Chen, C.-T. A., Clegg, S. L., Hatje, V., Maldonado, M. T., Sander, G.S., van den Berg, C.M.G., Wells, M. (2016). Toward a Quality-Controlled and Accessible Pitzer Model for Seawater and Related Systems. Frontiers in Marine Science, 3, 139. doi: 10.3389/fmars.2016.00139.
|
|
– Weigand, M. A., Foriel, J., Barnett, B., Oleynik, S., & Sigman, D. M. (2016). Updates to instrumentation and protocols for isotopic analysis of nitrate by the denitrifier method. Rapid Communications in Mass Spectrometry, 30(12), 1365–1383. doi: 10.1002/rcm.7570.
|
| |
| Acces the GEOTRACES Database |
|
|
|
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.
|
