Abstract
Total dissolved chromium concentrations have been determined for four vertical profiles from Baffin Bay, the Labrador Sea and the northwest Atlantic Ocean. Chromium concentrations of 3.3 to 5.2 nM are found. While the vertical distribution of chromium in the study area is largely controlled by advective processes, the profiles show a small depletion in surface water with increase to a more constant level at depth. Surface depletion and correlations between chromium and nutrients indicate biogeochemical cycling of chromium. At one station, close to the Gibbs fracture zone, a distinct chromium maximum is observed. This feature centred at 3200 m is deeper than the core of the ambient water mass which is advected westward from the Eastern Basin of the Atlantic Ocean through the Gibbs fracture zone.
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