pr. Secund. 
\ 
28) 
Meter i Vest for Nordpynten af Prince Charles Foreland. 
Herfra til B er 1070 km. Derefter beregnes Skjærings- 
punkterne for 0.3, 0.2 og 0.1 Meters Højde. Udenfor 
Prince Charles Foreland bliver Hastigheden 0.052 Meter 
Mellem B og Gronland (69°.2 N. Br.) have vi et rent 
Stromprofil til Bestemmelsen af Vindfladens Højde ved 
Grønlands Kyst. Fra B af voxer Hastigheden, indtil den 
i en Afstand af 335 km naar en Maximumsværdi af 0.13 
m. p. S. I dette Punkt bliver Højden, beregnet efter den 
paraboliske Formel, 0.8065 Meter. 
I en Afstand fra dette Punkt henimod Grønland af 
510 km (a) giver Pl. XX XII en Hastighed af 0.03 m.p.S. 
Lægges over dette Snit en Parabel, med Toppunkt inde i 
Grønland og Axen nedad, saa have vi, naar Afstanden fra 
dette Toppunkt til det Punkt, hvor Hastigheden er 0.03 
(w), er x, og Afstanden til det Punkt, hvor Hastigheden er 
DIG (OQ), ee Xe 
X  U X—x  U—u 
3° @ G0 Uu 
AISA, XC = HIG I- 159 = 099 Iker, 
Heraf faar man H, =k U X= 0.6132 m ved Toppunktet. 
Da Kysten ligger 110 km fra Toppunktet, bliver 
ved Kysten 
MOP ang MAB an 
il, = Hem asl — 0.6132 ae = 0.0169 Meter. 
Altsaa H = 0.6132 —0.0169 = 0.5963 m, 
og Højden ved Grønland over B= 
0.3065 —+ 0.5963 = 0.9028 Meter. | 
Jeg setter saaledes Vindfladens Højde ved Grønland 
til 0.9 Meter. 
Mellem det her beskrevne Snit og Spidsberg-Axen er 
lagt en Normal til Grønlands Kyst paa 7695 N. Br. Paa 
denne er oprejst to Stykker congruente Parabelbuer, den 
ene med Toppunkt i B og Axen opad, den anden med 
Toppunktet inde i Grønland (paa 24° W. Længde) med 
Axen nedad. Imellem B og dette Punkt er en Afstand af 
1800 km. Midt imellem begge bliver Højden over B 
4 (0.917) eller 0.458 Meter, Hastigheden 0.10 m.p.S. Ved 
Grønlands Kyst have vi Højden.0.9 Meter og Hastigheden 
o:03rmifp:!S: 
Imellem Grønland og Islands Nordkyst er lagt et 
Normalsnit. Vi have her ved Grønlands Kyst Højden 
H= 09 m, Hastigheden wu =0.04 m. p. S. og i en Afstand 
a af 240 km derfra en Maximumshastighed U af 0.13 m. 
p.S. I den tilsvarende Parabel, hvis Toppunkt ligger inde 
1 Grønland med Axen nedad, kalde vi Abscissen for det 
Punkt, som har Hastigheden u, for h, og Ordinaten for x, 
og for det Punkt, som har Hastigheden U, Abscissen H 
og Ordinaten X. 
Den norske Nordhavsexpedition. H. Mohn: 
AE | X—2Z) 
line and the line of equal height for 0.4 metre, lies 
west of the northern extremity of Prince Charles’ Foreland. 
From here to B the distance is 1070 kilometres. With 
these figures, the points of section are computed for a height 
of 0.3, 0.2, and 0.1 metre. Off Prince Charles’ Foreland, 
the velocity becomes 0.052 metre per second. 
Between B and Greenland (lat. 69°.2 N), we have 
a clear cross-section for determining the height of the 
at the coast of Greenland. From B the 
velocity increases, till, at a distance of 335 kilometres, 
it attains a maximum-value of 0.13 metre per second. At 
this point, the height, computed according to the parabolic 
formula, becomes 0.3065 metre. 
At a distance of 510 kilometres (a) from this point 
towards Greenland, the Pl. XXXII gives a velocity of 
0.03 metre per second. If, on this section, we lay a 
parabola with its vertex in the interior of Greenland and 
its axis pointing downwards, we shall have, assuming 
the distance from the said vertex to the point where the 
velocity is 0.03 (u) to be x, and the distance to the point 
where the velocity is 0.13 (U) to be X — 
wind-surface 
0.03 
U — KO 
~ O10 
ia, = == {los} lem, 
Hence X = 510 + 153 = 663. kilometres. 
We thus get Hp, =k U X= 0.6132 metre at the vertex. 
Now, since the coast lies at a distance of 110 kilo- 
metres from the vertex, at the coast 
110 IO 
Eee Fe ma = 0.0169 metre. 
Hence H = 0.6132 —0.0169 = 0.5963 metre, 
and the height at Greenland above B = 
0.3065 + 0.5963 = 0.9028 metre. 
Accordingly, I take the height of the wind-surface on 
the coast of Greenland at 0.9 metre. 
Between the above-described section and the Spitz- 
bergen axis, a normal line has been drawn to Greenland, 
touching the coast in lat. 76°.5 N. Along this line have been 
constructed two congruent parabolic curves, the one with 
2 
= 0.6132 
its vertex in B and its axis pointing upwards, the other 
with its vertex in the interior of Greenland (long. 24° W) 
and its axis pointing downwards. Between B and this 
point, the distance measures 1300 kilometres. Midway 
between both, the height above B becomes å (0.917), or 
0.458 metre, the velocity 0.10 metre per second. At the 
coast of Greenland, we have the height 0.9 metre, and the 
velocity 0.03 metre per second. 
Between Greenland and the north coast of Iceland, 
a normal section has been laid down. We have here, at 
the coast of Greenland, the height H=0.9 m., the velocity 
w = 0.04 m. per sec., and at the distance, a, of 240 kil- 
ometres from thence a maximum-velocity, U, of 0.13 m. per 
sec. In the corresponding parabola, the vertex of which 
lies in the interior of Greenland, with its axis pointing down- 
wards, we call the abscissa h and the ordinate x for the 
point with the velocity uw, and the abscissa H and the or- 
dinate X for the point with the velocity U. 
Nordhavets Dybder, Temperatur og Stromninger. 17 
