Expeditionsrapport från U/F Argos vecka 49, 1995

Typ: Rapport
Författare: Bengt Yhlen


Low concentrations of hydrogen sulphide were measured at the Bornholm deep (BY 5) from 80 m and by the bottom at Christiansö (BY 4) The oxygen concentration by the bottom in the eastern Arkona Basin (BY 2) was below 2 ml/l, while the western parts (BY 1) were completely vertically mixed with an oxygen concentration of nearly 8 ml/l by the bottom. Low concentrations of oxygen, <2 ml/l, were found below 70 m depth in the Bornholm Basin and below 90 m in the northern parts of the Baltic Proper. The silicate-concentrations of the surface water in the southern Baltic Proper are still only one third of the normal concentrations. The bottom waters of the Kattegat are again fully oxygenated, with concentrations of over 4 ml/l in the Sound and by Kullen and over 5 ml/l by Anholt and Fladen. The salinity values in the surface layer were low.