1915- No. 2 



SPITSBERGEN WATERS. 



Figs. 60 to 63 give the central vector-diagrams of the relative movements 

 at the various depths, as far as they could be constructed. They differ 

 greatly from the vector-diagrams of the relative movements at Stat. 41 

 (Figs. 38 to 43). 



I have also made an attempt, Fig. 64, to construct progressive vector- 

 diagrams for the relative movements at the various depths, between r.oo 



-f'f a m.. 



Fig. 60 63. Central Vector Diagrams of the Relative Movements at depths of 520 and 540 

 metres (indicating the Surface Drift), at 10, 20, and 50 Metres. The directions are those 

 from which the water moved at the different depths relatively to the ship, or towards 

 which the ship moved relatively to the water at the different depths. Hence Fig. 60 gives 

 the directions (with velocities) towards which the ship or the snrface layers moved, pro- 

 vided that the movements at 520 and 540 metres were negligible. 



p. m. and midnight on August 5th ; but the observations are not sufficiently 

 numerous to give trustworthy curves, and our figure may therefore only 

 be considered as an approximate experiment. It shows, however, that there 

 must have ben a striking difference between the movements at this place 

 (Stat. 20) and those at Stat. 41. This difference may to some extent tfe 

 explained by the different situation, Stat. 20 being to the south-west of 



