Science Highlights

Some recent GEOTRACES science findings are reported below.

Large amounts of soluble manganese(III) identified at the land-ocean interface

Soluble manganese(III) [Mn(III)] is a phase traditionally considered non important in aqueous redox reactions. However, applying a spectrophotometric method sensitive to Mn oxidation state, Madison and co-authors found that up […]

28.10.2013

Results from the first US-GEOTRACES cruise in the North Atlantic

Results from the first US-GEOTRACES cruise in the North Atlantic are coming out! Andrew Wozniak and co-authors show that aerosols from European-influenced air masses (combustion influenced) have higher relative iron (Fe) […]

Dissolved iron in the tropical North Atlantic Ocean

Surprisingly high dissolved iron (dFe) values have been found in the subsurface oxygen minimum waters of the tropical North Atlantic from the Cape Verde Islands west to 42°W, reaching concentrations […]

First combined distributions of dissolved Neodymium (Nd) – Hafnium (Hf) concentrations and isotope compositions from the Baltic Sea

The central Baltic Sea is a marginal brackish basin, in which anoxic bottom waters prevail either seasonally or permanently and which is surrounded by continental landmasses comprising a large variety […]

24.10.2013

GEOTRACES: Get the right data!

Measuring concentrations of many constituents at the nano- to picomolar levels in seawater is a difficult challenge, requiring thorough intercalibration between the different laboratories participating to the same programme. GEOTRACES is […]

Are the mid oceanic ridges a source of radiogenic neodymium input?

An unexpected radiogenic value of neodymium (Nd) isotopic composition observed by Catherine Jeandel and colleagues in the Deep Pacific Water raises the question of the role of mid ocean ridges […]

09.09.2013

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 […]

05.09.2013

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 […]

03.09.2013

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 […]

22.07.2013

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