IOW Logo

Hypoxic and anoxic regions in the Baltic Sea, 2007

The content of this webpage is part of the Marine Science Report No 100 2016 and should be cited as:

Susanne Feistel, Rainer Feistel, Dietwart Nehring, Wolfgang Matthäus, Günther Nausch, Michael Naumann: Hypoxic and anoxic regions in the Baltic Sea, 1969 - 2015. Meereswiss. Ber., Warnemünde, 100 (2016) doi: 10.12754/msr-2016-0100

All version information and information on further technical development are available via the website

Jan/Feb, 2007: download SVG (computed 2016)
Mar/Apr, 2007: download SVG (computed 2016)
Apr/May, 2007: download SVG (computed 2016)
Jul/Aug, 2007: download SVG (computed 2016)
Oct/Nov, 2007: download SVG (computed 2016)
Apr/May & Oct/Nov, 2007: download SVG (computed 2016)
In 2007, five barotropic inflow events could be observed. Esp. the near-bottom layer from the Bornholm Basin to the Gdańsk Deep was ventilated repeatedly. These inflows could only shortly improve the oxygen situation in the eastern Gotland Basin with traces of oxygen (0.02-0.04 ml/l) at 225 m in May. Already in autumn, high H2S concentrations were found again and, at the end of the year, the whole water column below 137 m was anoxic. In the western Gotland Basin the stagnation continued undiminishedly (NAUSCH et al., 2008).



  • NAUSCH, G., FEISTEL, R., LASS, H.U., NAGEL, K., SIEGEL, H., 2008: Hydrographisch-chemische Zustandseinschätzung der Ostsee 2007. – Meereswiss. Ber. Warnemünde 72, 1-93, doi: 10.12754/msr-2008-0072