1 91 5- ^'o- 2. 



SPITSBERGEN WATERS. 



67 



0.'^ 



Ill 



^0 



200- 



At the Surface — ii.6 cm. per second 



At lo metres o.ö , , 



. 20 „ 7.2 , , 



50 B 3-6 , 



, 100 , 2.3 , , 



, 3CX) „ 0.0 „ , 





were taken deeper than at 150 metres, and at Stat. 41 a no observations 

 deeper than at 100 metres. The series of the latter station may, however 

 be combined with the deeper series taken at Stat. 41 i hour and 45 mi- 

 nutes earher. and only a short distance oft" ^ 



Fig. 54 represents the section through these stations. The inclination 

 of the isopycnals indicate that the currents should have had westward di- 

 rected components (perpendicular to the section) between the surface and 

 10 metres (see the isopycnal of 27.00), and east- 

 ward directed components between 20 and 200 

 metres (see the isop^xnals of 27.50 to 27.90I. 



Let us assume that at depths of 300 metres 

 there was no appreciable difference between the 

 densities at the Stations (40. 41 and 41 a I, and 

 that the movements of the water at that depth jqÅ 

 were negligible. If we draw the curves of the 

 vertical distribution of density at Stat. 40 and 

 41 a (and 41), Fig. 55, we can compute the velo- 

 cities of the currents by means of the simple 

 method that I have described [1913. p-49]- We 

 then find the following values of velocity for 

 the components of the currents, directed east- 

 wards at an angle of 90 ° with our section : 



300- 



Fig. 54. Sections through Stats. 



According to our current-measurements the ^o and 41 (and 41 ai Aug. 17 — 



average velocities and directions of the currents 

 should have been about thefollowing(seepp.55,59). 



At the Surface 12.7 cm. pr. second towards S66'^\V 

 i -9 



18, 1912. — Horizontal Scale 

 I : i,ooo,CK)o. Vertical Scale 

 i".4,ooo Stat. 41 a \i.e. the ob- 

 ser\'ations between o and 100 

 at 41) were taken about 2 kilo- 

 metres nearer to Stat. 40 than 

 sriven in this figure. 



ID metres j.9 » » » ^•44*'E 



, 20 „ 7-8 . . . N 60 W 



- 50 „ 36 . ... N55^E 



, 100 „ 3-4 - . . N38OE 



If our section was directed along the meridian, and these angles are 

 introduced our computations will give the following values for the currents : 



* Two later series of observations, taken at the same station (41 b and 41 c), gave higher 

 densities than the series at 41a. But they were taken more than a day later, and so 

 long time after the observations at Stat. 40, that thej- cannot be used for computations 

 such as these, even if we take into consideration the distance that the ship may have 

 drifted in the mean time. 



