THE BLACK SEA 



393 



Table 154. Mean values of hydrological data for the deep waters of the Black Sea 



( Wodjanitzky) 



distribution of iso-surfaces, while taking into consideration the water balance 

 through the Bosporus. 



According to Wodjanitzky the path of the water masses in a cyclonic cir- 

 cular current is not rectilinear, but spirals towards the outer sides of the cur- 

 rent, i.e. from the central halistatic zone to the periphery (Fig. 189). Moreover, 

 the vertical mixing of water between the separate zones proceeds differently 

 at various depths. 



In Wodjanitzky's opinion: 'The moving forces causing vertical water 

 exchange are : (/) the wind creating a system of surface currents, (2) the earth's 

 rotation, throwing the currents to the right hand side and causing a spiral 



Fig. 189. Operational diagram of vertical 

 water exchange in the Black Sea (Wod- 

 janitzky). 



