Dissolved neodymium isotopes and Rare Earth Elements combined with oxygen isotopes trace water masses in the Fram Strait

Georgi Laukert and co-workers (2017, see reference below) provide new insights into the sources, distribution and mixing of water masses passing the Fram Strait, the gateway between the Arctic Ocean and the Nordic Seas, based on a detailed geochemical tracer inventory including dissolved neodymium isotope (εNd), rare earth element (REE) and stable oxygen isotope (δ18O) […]

Feb / 02 / 2017

Oxygen biogeochemistry exerts a strong influence on cobalt cycling

This is an important result of the US GEOTRACES East Pacific Zonal Transect (EPZT) cruise (GP16) discussed by Hawco and his co-workers (2016, see reference below). The distribution of dissolved cobalt and labile cobalt along this section is closely tied to the oxygen minimum zone. This work also shows that (1) elevated concentrations of labile […]

Jan / 13 / 2017

Tracking the sea ice exported from the Siberian Shelf to the Arctic Ocean

An original method based on the use of the couple salinity – δ18O allows determining the fractions of water that had been removed as ice across the shelf and the consequent net export of sea ice from Laptev and East Siberian Sea towards the remaining Arctic Ocean (860 km3/yr). An important point is that this […]

Nov / 26 / 2015