Cruise report from R/V Argos week 42, 1997

Type: Report
Author: Bengt Yhlen


The weather was dominated by weak to moderate northerly winds. The surface water temperatures showed normal values. In the surface water of the Skagerrak the nutrient contents were low. In the surface water of the Kattegatt and the Baltic, outside the Sound area, the nitrogen componds were below or close to the detection limit, whereas both phosphate, 0.1-0.2 µmol/l, and silicate, 0.2-0.7, in the Kattegatt and, 6-10, µmol/l in the Baltic was present. The oxygen conditions in the bottom water are displayed in a figure. Hydrogen sulphide was observed in the deep water of the East Gotland Basin (stations: BY10, BY15 and BY20). The concentration close to bottom in the Gotland deep is now almost 50 µmol/l. No visible algae blooms were observed in any of the sea areas.