Cruise report from R/V Argos week 24, 2007

Type: Report
Author: Bodil Thorstensson


In all regions the surface water temperatures were over the normal. In some regions in the southern Baltic and in the Sound the concentration of phosphate was higher than normal. Also silicate concentrations were elevated, while the nitrogen components showed, for the season, normal values. The nutrients in the Skagerrak and Kattegat had normal concentrations except some high silicate values. No surface accumulation of algae bloom could be seen. Algae presence, however, could be observed in the eastern and partly in the western Gotland Basin. In the southern Baltic Secchi depth was 8 metres and rare algae occurrence. Hydrogen sulphide was present in the western Gotland Basin from a depth of 80 meters, in the eastern Gotland Basin from 140 metres depth and from a depth of 85 metres in the Bornholm Basin.