SPITSBERGEN WATERS. 



61 



tion of the progressive vector-diagrams of the relative movements (see 

 pp. 55 and 56). According to the progressive vector-diagrams, Fig. 53, we 

 find that from August i8th 2 a. m. to August igth at noon, the water 

 should have moved, 



at a depth of 20 metres, towards N i W (N 1 1 E magnetic) with a 

 mean velocity of 7.6 cm. per second; 



at 50 metres, N 58 E (N 70 E magnetic) with a mean velocity of 3.6 

 cm. per second; 



N 



50-nu. 



W 



50 am/sec. 



Fig. 46 50. Central Vector Diagrams of the Real Movements at 20, 50, 1OO, and 20O 

 Metres as they probably were according to the measurements at Stat. 41. 



at 100 metres, towards N42E (N 54 E magnetic) with a mean velo- 

 city of 3.3 cm. per second. 



The shifting of the direction of the water-movement towards the right 

 with increasing depth, simultaneously with a decrease ^f the velocity, might 

 appear to agree with what it theoretically ought to be (cf. NANSEN, 1902, 

 p. 369 et seq.}. While the average drift of the ice at the surface was 

 about 13 cm. per second towards S 66 W, the current at 20 metres 

 moved with an average velocity of about 8' cm. per second at an angle 

 of about 110 towards the right of the direction of the surface movement, 



