Sunday, December 21, 2008

Can large-scale pumps inject oxygen and life into the lifeless seabed of the Baltic?

Even if the answer is yes, is this a good idea? From Science Daily: Can large-scale pumps inject oxygen and life into the lifeless seabed of the Baltic? This is what a pilot study, conducted by researchers at the University of Gothenburg, will try to establish, with the help of SEK 20 million from the Swedish National Environmental Protection Agency (Naturvårdsverket) and the Swedish Research Council Formas. The Baltic Sea is actually characterised by a high phosphate content and by a considerable algal bloom during the summer. But it has not always been like that.

During the 1990s the phosphorus content in the Baltic fell by a third, a reduction which coincided with a marked thermocline which increased the oxygen content down to a depth of 120 m. These circumstances show that it should be possible to bring about a rapid reduction in the eutrophication symptoms in the Baltic proper, by adding water that is rich in oxygen in an artificial way and mixing the bodies of water intensively.

The question is whether it is possible to maintain the Baltic in this oxygen rich state, by continuously adding oxygen rich water to the deep water. This is what will now be investigated in a pilot project conducted by researchers from the University of Gothenburg. The project, called Box, is receiving support amounting to SEK 20 million from Formas and the Swedish National Environmental Protection Agency (Naturv√•rdsverket)….

Hugo Knorr's 1880 painting, Ostseestrand

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