THE BALTIC SEA 



279 



Fig. 121. Surface salinity of the Northern and 

 Baltic Seas in August (Schulz). 



especially abrupt in the straits, in relation to both space and time, depending 

 on the season, and above all on the direction and force of the wind. Thus at 

 one and the same spot, in Oresund, the fluctuations of salinity observed on 

 the surface ranged from 7-2 to 22-4% and at a depth of 17 m from 11-7 to 

 22-5% . The magnitude of the variations in the area of the Darss ridge is 

 about the same. 



At another point in Oresund, within a period of six months salinity on the 

 surface ranged from 6-8 to 25-7% and at a depth of 8 m from 8-2 to 25-7% . 



Fig. 122. Near-bottom November isohalines (% ) of the 



Baltic Sea. Broken lines are May surface isohalines 



(Ekman). 



