Welcome to GEOTRACES
GEOTRACES Sections. For more information please click here. In red: Planned Sections. In yellow: Completed Sections. In black: Sections completed as GEOTRACES contribution to the IPY. Download the map.
GEOTRACES IDP2014 in Science mag
- Published on Saturday, 01 March 2014 05:51
3D Maps Reveal a Lead-Laced Ocean
The GEOTRACES programme is collecting a large amount of trace element data compared to what was available before. This is well illustrated with the 3D view of lead concentrations in the Atlantic Ocean (see figure below), as discussed in the Science article below. For the first time, scientists can trace the pathway that lead has followed since its atmospheric deposition on the surface of the North Atlantic Ocean in the 20th century to its present location, at around 1000 meters depth. The maximum Pb concentrations in the figure (bright red) are slightly higher than 60 pmoles/kilogram (12 parts per trillion), and clearly show the imprint of the use of leaded gasoline by humanity, which has been phasing out since the mid 70s. Measurements of anthropogenic trace gases (chlorofluorocarbons and sulfur hexafluoride) on the section between North America and Africa (not shown) confirm that the maximum lead concentrations occur within water masses that sank from the ocean surface at the time of peak atmospheric lead deposition.
Read the Science mag article at:
Figure: Distribution of dissolved lead in the Atlantic (eGEOTRACES.org)
GEOTRACES IDP2014 in Nature.com
- Published on Thursday, 27 February 2014 09:58
Digital atlas shows oceans' iron levels
Three-dimensional map reveals global sources and sinks for trace metals...
Read the Nature article at : http://www.nature.com/news/digital-atlas-shows-oceans-iron-levels-1.14774
Figure: Distribution of dissolved iron in the Atlantic (eGEOTRACES.org)
2014 Ocean Sciences Meeting - GEOTRACES Sessions
- Last Updated on Tuesday, 11 February 2014 16:14
- Published on Wednesday, 04 September 2013 13:45
2014 Ocean Sciences Meeting
23-28 February 2014 - Honolulu, HI, USA
GEOTRACES Town Hall meeting:
*GEOTRACES Intermediate Data Product Town Hall Meeting
Tuesday, February 25, 2014 Time: 12h45 PM
*018 - Advancing the frontiers of the Si cycle in terrestrial, coastal, and open ocean ecosystems
Organizers: Paul Treguer, European Institute for Marine Studies; Joanna Carey, U.S. Environmental Protection Agency; Mark Brzezinski, University of California; Christina De La Rocha, European Institute for Marine Studies; Robinson Fulweiler, Boston University; Manuel Maldonado, Centro de Estudios Avanzados de Blanes.
*037 - Dynamics of Coupled Processes in the Ocean: A tribute to the career of Dr. James Murray
Organizers: Laurie Balistrieri, USGS/UW Oceanography; Kathryn Kuivila, USGS; Hans Jannasch, MBARI.
*080 - Biogeochemistry of Trace Elements and their Isotopes
Organizers: Rob Middag, University of Otago; Alessandro Tagliabue, University of Liverpool; Peter Sedwick, Old Dominion University; Claudine Stirling, University of Otago; Andrew Bowie, University of Tasmania; Jingfeng Wu, University of Miami.
*092 - From VERTEX to GEOTRACES: honoring Ken Bruland's contributions to marine biogeochemical cycles
Organizers: Gregory Cutter, Old Dominion University; Ana Aguilar-Islas, University of Alaska; Kristen Buck, Bermuda Institute of Ocean Sciences; William Landing, Florida State University; Maeve Lohan, Plymouth University.
*114 - Application of natural and anthropogenic radionuclides to the study of ocean processes
Organizers: Matt Charette, WHOI; Marcus Christl, ETH Zurich; Nuria Casacuberta, ETH Zurich; Ken Buesseler, WHOI.
*116 - Advances in approaches to assess metal-binding organic ligands and perspectives on the impacts of ligands on metal-biota interactions in the oceans
Organizers: Maeve Lohan, University of Plymouth; Kristen Buck, Bermuda Institute of Ocean Sciences; Sylvia Sander, University of Otago.
*060 - Submarine Groundwater Discharge - from Ridge to Reef: Groundwater Evolution, Climate, Land-Use, Coastal Hydrology and Marine Biogeochemical Impacts
Organizers: Steven Colbert, University of Hawaii Hilo; Henrieta Dulaiova, University of Hawaii; Craig R. Glenn, University of Hawaii; Jason Adolf, University of Hawaii.
Goldschmidt 2014 - GEOTRACES Special Sessions
- Published on Wednesday, 08 January 2014 14:37
June 8-13 - Sacramento CA, USA
Abstract submission is closed.
17d: Elemental Cycling in Oxygen Minimum Zones
Convenor: Jay Cullen
17e: Trace Elements, Microbes, and Biogeochemical Cycles in the Ocean Environment
Co-convenors: Kathy Barbeau, Maite Maldonado, Benjamin Twining
16g: Sources, sinks and stores: integrating isotope and geochemical proxies for past and present surface processes, from elementary reactions to global change
Co-convenors: Tim Conway, Penelope Lancaster, Damien Lemarchand
14e: Biogeochemistry of Arctic and Alpine Environments New!
Co-convenors: Lori Ziolkowski, Amy Townsend, Ashley Dubnick
17a: The Contribution of the Colloidal Phase to Marine Biogeochemistry
Co-convenors: Mark Wells, Christian Schlosser, Martha Gledhill, Jessica Fitzsimmons
17g: Hydrothermal Vents: Controls and Influences – Nano-Scale to Global – On Earth and Beyond New!
Co-convenors: Emma A. A. Versteegh, Kathrin Streit, Max Coleman
19c: The Biogeochemical Cycling of the Nutrients N, P and Si: Terrestrial and Marine Insights for the Present, Past and Future
Co-convenors: Karen Casciotti, Troy Baisden, Gabriel Filippelli, Mak Saito
19f: Biogeochemical Processes Influencing Mobilization, Transformations, and Bioavailability of Mercury
Co-convenors: Helen Hsu-Kim, Nathan Yee, Andrew Graham
See GEOTRACES full session abstract list.
- Long-lived thorium isotopes: powerful tools to estimate lithogenic fluxes to the ocean
- Ed Boyle awarded EAG Urey Medal
- New revelations on boundary scavenging in the North Pacific
- News from GEOTRACES community in South Africa
- Analyzing rapidly, precisely and semi-automatically lead isotopes on variable volumes of seawater (up to 1000 ml)