Thanks to GEOTRACES-IPY, more and more iron data in the Arctic

Science Highlights

10 April 2012

fred_MG_0762_gel2

Klunder, M. B., Bauch D., Laan P., de Baar H.J.W., van Heuven S., and Ober S. (2012), Dissolved iron in the Arctic shelf seas and surface waters of the central Arctic Ocean: Impact of Arctic river water and ice-melt, J. Geophys. Res., 117, C01027, doi:10.1029/2011JC007133.


Dissolved and Total Dissolvable iron (Fe), together with aluminium (Al), seawater δ18O and other ancillary parameters were acquired in the framework of the GEOTRACES-IPY (GPY11) ARK XXII/2 cruise onboard R/V Polarstern in 2007. The roles of fresh water sources (Eurasian river discharges), sea ice, biological uptake/remineralisation and potential release of iron from the shelf sediments on the distribution of iron in the Arctic waters are discussed. This work also advances some hypotheses perspectives concerning biogeochemical cycles in the ocean under the pressure of global change.

Latest highlights

Deep-sea mining, dewatering waste, accidental plumes and their potential consequences on trace metal fates in the North Pacific Ocean

Xiang and his colleagues conducted laboratory incubation experiments that simulate mining discharge into anoxic waters.

Biogeochemical behaviours of barium and radium-226 in the Pacific Ocean

Barium and radium-226 are not just proxies for nutrients and ocean circulation but are themselves marine biogeochemical tracers…

Intrigued by Rare Earth Elements and neodymium isotopes? A review for the curious

Vanessa Hatje and a group of Rare Earth Element (REE) specialists propose an exhaustive review on the behaviour of REE.

North-South section of bioactive cadmium, nickel, zinc, copper and iron along GEOTRACES transect GP19 in the Pacific Ocean

Zheng and his colleagues propose the first full sections of the simultaneous dissolved distributions of five nutrient-type trace metals in the western South Pacific Ocean.

Rechercher