Tracking the Indian Ocean source of barium
Intermediate waters of the Bay of Bengal can be a significant source of dissolved barium (Ba) to the Indian Ocean. This is the conlusion of an extensive study of the […]
Science Highlights
Some recent GEOTRACES science findings are reported below.
Determining simultaneously iron, zinc and cadmium isotopes in small volumes of seawater is possible now!
The first simultaneous method for the determination of these three isotope systems in seawater has been published. This method is designed for use on only a single litre of seawater […]
GEOTRACES scientists discover new variability in iron supply to the oceans with climate implications
Researchers based at the National Oceanography Centre Southampton (UK) and at the University of South Carolina (USA) have found that the amount of dissolved iron released into the ocean from […]
Nice coupling between radium-228 and neodymium parameter distribution in oceanic surface waters
Using Radium-228 (228Ra) activity as an indicator of coastal water mass influence and a compilation of Neodymium (Nd) parameters in the first 100 m, Chen and co-authors propose that more stratified […]
The power of tracers: a 3D animation example of Thorium-230 along GEOTRACES North Atlantic Sections
The central component of GEOTRACES is a series of cruises spanning the global ocean. These cruises collect water and analysis of many trace elements and isotopes. The power of the GEOTRACES […]
Latest recommendations for successful analysis of dissolved osmium in seawater
Analysis of osmium in seawater presents complex challenges, linked to its very low (femtomolar) concentrations and multiplicity of possible oxidation states. Early insights were provided by Karl Turekian’s group at […]
A global compilation of dissolved iron measurements: focus on distributions and processes in the Southern Ocean
A data synthesis effort recently compiled over 13,000 observations of dissolved iron concentrations that more than doubled the previous data compilation. A systematic analysis of the distribution of data in […]
Substantial intra-basin variation of the dissolved metal/phosphorus ratio in the different water masses of the Indian Ocean
The first simultaneous, full-depth, and basin-scale section-distribution of dissolved (D) aluminum (Al), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), cadmium (Cd), and lead (Pb) is […]
Neodymium isotopic compositions and rare earth element data evidence boundary exchange in the southwestern tropical and equatorial Pacific
New rare earth element (REE) concentrations and neodymium (Nd) isotopic compositions measured between the southwestern Tropical and the central equatorial Pacific (112 samples) support the hypothesis that the main process […]