THE WHITE SEA 



189 



observed in April to July, caused by the activity of phytoplankton. Sometimes 

 the saturation zone descends to a considerable depth. Thus at the end of June 

 1933 oxygen at one of the stations at the same cross section of the Gulf of 

 Kandalaksha was distributed in the manner shown in Table 80. 



It is possible that the passage of oxygen into the depths of the White Sea 

 occurs together with the slipping of masses of water down slopes into the 

 depths at the time of the winter rise of salinity of the surface water as a result 



Fig. 82. Diagrams of the positions of the cold and 



saline deep waters of the White Sea in August 1922 



(Derjugin, 1928): A — temperature, В — salinity. 



