Hypoxic and anoxic regions in the Baltic Sea, 1969

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 https://www.io-warnemuende.de/msr-2016-0100.html

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

All distribution maps

2020	2021
2015	2016	2017	2018	2019
2010	2011	2012	2013	2014
2005	2006	2007	2008	2009
2000	2001	2002	2003	2004
1995	1996	1997	1998	1999
1990	1991	1992	1993	1994
1985	1986	1987	1988	1989
1980	1981	1982	1983	1984
1975	1976	1977	1978	1979
1970	1971	1972	1973	1974
				1969

Jan/Feb, 1969	Mar/Apr, 1969: download SVG (computed 2016)
Apr/May, 1969: download SVG (computed 2016)	Jul/Aug, 1969: download SVG (computed 2016)
Oct/Nov, 1969: download SVG (computed 2016)	Apr/May & Oct/Nov, 1969: download SVG (computed 2016)
The oceanographical conditions were influenced by the moderate MBI in February 1969 which terminated the stagnation period lasting since 1965. The deep water in the Bornholm and the Gdańsk Basins was supplied with oxygen beginning in Feb./March. In the eastern Gotland Basin, H₂S was replaced by O₂ in the bottom water step by step. First signs of the inflowing water were observed in March. In Oct. an intermediate layer containing H₂S was found. The Basin was free of H₂S in Nov./Dec., whereas anoxic conditions were observed in the northern and western Gotland Basin during the whole year (NEHRING & FRANCKE, 1973a).

References:

NEHRING, D., NEHRING, D., FRANCKE, E., 1973a: Zusammenfassende Darstellung der hydrografischchemischen
Veränderungen in der Ostsee 1969/1970. – Fischerei-Forschung, 11(1), 31-43. (Link)