Cruise report from R/V Argos week 46, 2006

Type: Report
Author: Lars Andersson


Surface water temperatures were somewhat higher than normal on the west-coast, though close to normal in the Baltic Proper. Nutrient concentrations in the surface water were elevated in the Kattegat and the eastern part of Skagerrak. In the Baltic, surface concentration of phosphate was higher than normal in the Arkona Basin and in the Hanö Bight, while it was normal in the remaining areas. Nitrogen and silicate showed typical or somewhat below normal values for the season. Oxygen concentrations below 2 ml/l were observed at depths exceeding 60 to 70 metres in the whole Baltic Proper. Hydrogen sulphide was found at depths exceeding 125 metres in Eastern, 80 metres in the Northern and 80-90 metres in the Western Gotland Basins.