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The Baltic Sea

The Baltic Sea. Maarja Toomemäe Oliver Nurk Jarek Elmi. Introduction. T he largest water body of low-salinity water B ounded by the Scandinavian Peninsula, the mainland of  Eur ope , and the  Danis h islands

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The Baltic Sea

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  1. The Baltic Sea Maarja Toomemäe Oliver Nurk JarekElmi

  2. Introduction The largest waterbody oflow-salinitywater Boundedby the Scandinavian Peninsula, the mainland of Europe, and the Danishislands About 1,600 km long, an average of 193 km wide, and an average of 55 m deep The surface area is about 377,000 km² and the volume is about 20,000 km³ 8,000 km of coastline

  3. Waterregime ThewaterflowsfromAtlanticoceantothe Baltic Sea through the Danish straits; however, the flow is complex Theoutflowfromthe Baltic Sea isabout1000 km³ peryear Theinflowfrom Kattegat isabout 500 km³ peryear

  4. Salinity Muchlower than that of ocean water (which averages 35‰) The open surface waters of the central basin have salinity of 6 to 8 ‰ Below 40 to 70 m, the salinity is between 10 and 15 ‰ in the open Baltic Sea

  5. Salinity Near the Danish straits the salinity is close to that of the Kattegat, but still not fully oceanic Salinity decreases steadilytowards North and East At the northern part of the Gulf of Bothnia the water is no longer salty and many fresh water species live in the sea.

  6. Thesalinityofthesurfacewater

  7. Pollution Oneofthemostpolluted sea Every litre of water has 10 grams of oil based chemicals 400 tons of waste from oil is dumped into the ocean every year Alot of pollution from chemical weapons that were created for WWII Themostcommontoxicants are DDT, PCB, mercury and heavymetals

  8. Consequenses Massivealgaeblooms Hugedangerfor sea creaturesand birds (herringswithouteyes) Loss of biodeversity The Helsinki Commission (or HELCOM), works to protect the marine environment of the Baltic Sea from all sources of pollution through intergovernmental co-operation between thecountriessurroundingthe Baltic Sea

  9. Thankyouforyourattention!

  10. http://www.baltic.vtt.fi/demo/balful.html http://www.annaabi.com/Referaat-L%C3%A4%C3%A4nemere-keskkond-m61303.html http://www.helcom.fi/helcom/en_GB/aboutus/

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