Fig. 1 14a. Regions of the Baltic Sea (Ekman). 1 Oresund ; 2 Danish 

 Belt; 3 German Belt; 4 Arcona depression; 5 Bornholm de- 

 pression; 6 Eastern part of central depression; 7 Western part of 

 central depression; 8 Gulf of Riga; 9 S. Quarken; 10 Aland Sea; 

 11 Gulf of Bothnia ; 12 Gulf of Finland. 



Fig. 1 14b. Depths of the Baltic Sea (Ekman). 



