121 
disses Form og Retning. Kun hvor Kysten løber i samme 
Retning, som Vinden, vil Havets Bevægelse kunne følge 
dennes Retning. Hvor derimod Vindens Retning danner 
en Vinkel med Kystens, maa Strømmen følge denne og 
faar en Bevægelsesretning, der afviger fra Vindens. Den 
Hastighed, hvormed Strømmen vil løbe, bliver ligesaameget 
afhængig af de Vinde, der blæse i dens Ryg og i dens Front, 
som af dem, der blæse paa selve Stedet, og desuden af Kystens 
og Havbundens Form og Stilling til de virkende Vinde. At 
finde det Strømsystem, der svarer til Vindsystemet i Kar- 
tet Pl. X XXI, ved nogen exact Beregning, ligger vel for 
Tiden udenfor Mulighedens Grændser. Jeg har derfor 
forsøgt at construere det op efter et Skjøn, efter de givne 
Data og de Principer, som jeg i det Følgende skal gjøre 
Rede for. 
Af Vindkartet, Pl. XX XI, ser man, at Vindene i 
Atlanterhavet drive Vandet dels opimod Islands Sydkyst 
og videre langs Islands Vestkyst samt, mellem Island og 
Skotland, ind i det norske Hav. 
Mellem den barometriske Indsænkning, der strækker 
sig fra Strøget østenfor Island forbi Nordkap ind i Øst- 
havet, og Norges Vestkyst drive Vindene Vandet videre 
nordover og ind i den sydlige Del af Østhavet. Her følger 
det Finmarkens, Ruslands og Novaja Semljas Kyster, drevet 
fremad af de herskende Vinde. I den nordlige Del af 
Østhavet ere de herskende Vinde østlige. De føre efter- 
haanden en Del af det atlantiske Vand henimod Beeren- 
Eiland og Spidsbergen. I Grønlandshavet herske, paa 
Nordvestsiden af Lufttrykkets Minimumzone, nordostlige og 
nordlige Vinde, der føre Vandet videre mod Vest og — 
under Grønland fra det indre Ishav — mod Syd langs 
Grønlands Østkyst og forbi Jan Mayen til Danmarkstrædet 
og Islands Østkyst. I vort Nordhav maa saaledes det 
cycloniske Vindsystem fremkalde et tilsvarende Stromsystem. 
Det barometriske Minimums langstrakte Zone ligger, 
i dens nordlige Del, meget excentrisk i Havet. En tilsva- 
rende excentrisk Beliggenhed af Strømsystemets Midtparti, 
nær det nordlige Norge, kan ikke antages at finde Sted. 
Udstrækningen og Styrken af de sydvestlige Vinde udenfor 
Norges Vestkyst overvejer de nordostlige Vindes mellem 
Spidsbergens Sydkap og Beeren Hiland. Vestenfor Nord- 
kap maa derfor den nordgaaende Strøm skride hen over 
den barometriske Indsænknings Omraade. En saa stor 
Hastighed af Strommen ved Nordkap, som det trange Rum 
mellem Lufttrykkets Minimum i Vest for Nordkap (755.3 mm, 
Pl. XXXT) og Norges Kyst vilde medføre, bekræftes ikke 
af Jagttagelserne. Jeg lader derfor Stromsystemets Axe 
gaa langs Linien A B (Pl. XXXII). Paa den sydøstre 
Side af denne Linie løber Strømmen nordover, paa den 
nordvestre Side sydover. 
coasts the motion of the sea must inevitably be influeneed 
by their form and direction. Only where the coast has 
the same direction as the wind, will the motion of the sea 
be able to follow the direction of the latter. On the 
other hand, where the wind forms an angle with the coast, the 
current must needs follow the latter, and will take a motion 
deviating in direction from that of the wind. The rate 
acquired by the current will be no less dependant on the 
winds that blow behind and in front than on those at the 
place itself, as also on the form of the coast and the sea-bot- 
tom and their relative direction to the operating winds. Now, 
to find by exact computation the current-system corresponding 
to the wind-system set forth in the map, Pl. XX XT, lies no 
doubt at present beyond the limits of possibility. Hence 
I have sought to construct it by estimate, from the given 
data and the principles I shall explain in the sequel. 
From the Wind-Chart, Pl. XX XI, we see that the 
winds in the Atlantic Ocean force the water partly up 
against the south coast of Iceland, and thence along the 
western coast of that island, as also, between Iceland and 
Scotland, into the Norwegian Sea. 
Between the barometrical depression extending from 
the tract east of Iceland, past the North Cape into the 
Barents Sea, and the West Coast of Norway, the winds 
foree the water farther north, and into the southern 
part of the Barents Sea. Here it follows the coasts of 
Finmark, Russia, and Novaja Semlja, impelled onward by 
the prevailing winds. In the northern part of the Barents 
Sea the prevailing winds are easterly. They carry by 
degrees part of the Atlantic water towards Beeren Hiland 
and Spitzbergen. In the Greenland Sea, on the north- 
western side of the minimum-zone of atmospheric pressure, 
north-easterly and northerly winds are found to prevail, 
which carry the water farther west and — off Greenland 
from the inner Polar Sea -- towards the south, along the 
east coast of Greenland and past Jan-Mayen to Denmark 
Strait and the east coast of Iceland. Hence, in the North 
Ocean, the cyclonic wind-system must give rise to a cor- 
responding current-system. 
The barometrical minimum’s elongated zone les through- 
out its northern part very excentric in the sea. Å corres- 
ponding excentric position of the medial part of the current- 
system in proximity to northern Norway cannot be assumed. 
The extension and force of the south-westerly winds blowing 
off the West Coast of Norway preponderate over that of 
the north-easterly winds blowing between South Cape, Spitz- 
bergen, and Beeren Hiland. Hence, west of the North 
Cape, the current setting northwards must flow over the 
limits of the barometrical depression. Å velocity of current 
at the North Cape as high as that which the narrow space 
between the minimum of atmospheric pressure west of the 
North Cape (755.3 mm., Pl. XX XI) and the coast of 
Norway would occasion, is not shown by the observations. 
Accordingly, I have drawn the axis of the current-system 
congruent with the line A B (Pl. XX XIII). On the south- 
eastern side of this line, the current sets northwards; on 
the north-western, southwards. 
Den norske Nordhavsexpedition. H. Mohn: Nordhavets Dybder, Temperatur og Strømninger. 16 
