26 FRIDTJOF NANSEN. M.-N. Kl. 
they may not rise very high above the deeper channels. The water 
over these banks will consequently remain comparatively stationary, 
forming, as it were, islands of quieter and often heavier (cf the Novaya 
Zemlya coast shelf) water, where the horizontal circulation is much reduced, 
and the vertical circulation may therefore be so much the more effec- 
tivel. As the horizontally moving water is much deflected towards the 
right by the Earth's rotation, in these high latitudes, it will have a strong 
tendency to move along the side-slopes of the great hollows and not 
along their central axes. Where a hollow is great, a cyclonic movement 
100 
150 
—1 Belour 34-9 %o 
AF 341—350 Yoo 
CZ Ütove 350% 
250 
300 
ee Zagpyenab fer 175 2800 & 2810 
Fig. 2. Section, Aug. 1902, from Breitfuss's Station 56 to his Stat. 77, see line Fig. 1. 
Horizontal Scale 1 : 6,000,000. Vertical Scale about 1000 times exaggerated. 
may be produced in this way and the water in the central portion of 
the hollow may have a comparatively slow horizontal movement, whilst 
the water along the slopes, especially on the southern and eastern side 
of the hollow, will move comparatively rapidly. Such seems, for in- 
stance, to be the case in the great central hollow, more than 300 metres 
deep, of the eastern Barents Sea, between 40° and 46° E. Long. (see 
Fig. 1, p. 24), as will be mentioned below. | 
The surface map of the Barents Sea (Pl. I), and the maps, Pls. II 
and III, showing the horizontal distribution of salinity and temperature, 
in the summer, at 50, 100, 200 and 300 metres, illustrate roughly the main 
features in this horizontal circulation. The latter maps are based chiefly 
! This may also be the reason why fishes in different regions of the Ocean seek such 
banks for spawning. There being comparatively little horizontal circulation, there is less 
risk of the eggs being carried away by currents. This is clearly demonstrated by Dr. 
J. Hjort's investigations on the distribution of fish-eggs in the spring on the Nor- 
wegian coast banks. 
—— 
