Science Highlights

Some recent GEOTRACES science findings are reported below.

Hydrothermal activity detected above the ultra-slow South West Indian Ridge, using a multi-proxy approach

Baudet and colleagues demonstrate the occurrence of hydrothermal venting on the Southwest Indian Ridge…

18.11.2025

To Ba or not to Ba: Evaluating water column excess particulate barium as a proxy for water column respiration

Rahman and co-workers examine the relationship between excess particulate barium and organic matter respiration in the water column…

14.11.2025

Assessment of the Solomon Sea’s dissolved iron contribution to the Equatorial Under Current

Sarthou and co-workers analysed 11 vertical profiles of dissolved iron at the entrance, within, and at the exit of the Solomon Sea…

13.11.2025

Major controls on the fate of dissolved manganese in the northeastern Indian Ocean

Malla and Singh investigated the key factors controlling dissolved manganese in the northeastern Indian Ocean.

06.11.2025

An original approach to assess the particulate trace metal concentrations in seawater

Sohrin and co-workers propose defining particulate trace metal as the difference between total dissolvable and dissolved metals after a long storage of filtered and unfiltered acidified seawater.

05.11.2025

Constraining aerosol deposition over the global ocean by the cosmogenic beryllium-7

He and co-workers propose a global estimate of aerosol deposition onto the ocean using the cosmogenic radionuclide beryllium-7.

04.11.2025

Oceanic lead concentrations and isotopes mapped using explainable machine learning

Using three machine learning models, Olivelli and her colleagues generated global climatologies of lead concentrations and isotopes…

24.09.2025

Dissolved nickel sources: transformation and sinks in the Arabian Sea

Malla and co-authors present an extensive study of the distribution of dissolved nickel in the Arabian Sea.

17.09.2025

Linking cadmium cycling to phosphate dynamics in the Indian Ocean: Evidence from GEOTRACES transects

Mishra and Singh determined cadmium and phosphate concentrations along 34 complete vertical profiles in the Indian Ocean.

10.09.2025

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