1 — 3 (46.385 — 0.1590. T — 0.0003 14. 7”) (1 — 0.00008118 p) p 
p beregnes forresten ved successivy Tilnærmelse (Se S. 148). 
Den følsende Tabel indeholder Observationerne og de 
deraf beregnede Tryk ved Havbunden i Atmosfærer. 
p I compute by successive approximation (See page 148). 
The following Table contains the observations and the 
pressures at the bottom computed from them, in atmospheres. 
No. Stations No. h P > iil 7 p 
I 358 93 789 2’ 1.02604 2.08 45.937 16.95 
2 359 416 8 2 760 2.0 46.066 75-97 
3 307 1216 74 58 786 0.26 46.344 222.89 
4 207 1280 72 36 786  —r .07 46.555 234.66 
5 353 1333 77 58 73t =O dao 46.490 244.48 
6 354 1343 78 I 781  —0.66 46.490 246.33 
7 349 1487 76 30 792 =L 420 46.575 272.90 
8 305 1590 FG å 787 —o.78 46.500 291.93 
9 350 1686 76 25 774  —1.36 46.602 309.66 
IO 302 1985 75 16 1.02765 —1.40 46.607 365.01 
Bestemmelse af Vandets Sammentrykning i 
Piezometret. 
Determination of the Compression of the Water in the 
Piezometer. 
Er t Temperaturen ved Havbunden, | With ¢ as the temperature at the sea-bottom ; 
m Piezometrets Stand (ved Temperaturen ¢) ved almin- m as the reading of the piezometer (temperature ?) 
deligt Lufttryk, at ordinary atmospheric pressure; 
m’ Piezometrets Stand (ved Temperaturen f) ved Hay- | m’ as the reading of the piezometer (temperature f) 
bunden, angivet af Indexens Stilling, 
at the bottom, indicated by the position of the 
index; 
1 Og € og x Constanter (x = Glassets Sammentryknings- Np € and % as constants, x =the coefficient of compres- 
coefficient),. sion of the glass; 
saa har man: 
Vandets Volum ved ?¢° og almindeligt Lufttryk = 
(C—cm) (1+ at+ 86) = 
Vandets Volum ved ?° og Trykket p paa Havbunden = 
(C—cm)a+tat+ PP) —xzp) = V 
we have: — 
The volume of the water at ?#® and ordinary atmospheric 
pressure = (C—cm) (1+ at+ #6 #) = iV: 
The volume of the water at ?¢° and the pressure p at 
the bottom =(C— cm) a+ at +80) (1 —2p) = Vi 
V— V= Vimp— €p?), hvor 7, = 50.153 — 0.1590. t — 0.000314 ? 
V= W” we C=4 m) — (C= cm) (1 a % Pp) 
V Cem 
Sm, I m2 
=p — EP 
(C—ecm) 7 p — (C— em) ¢ på —(C—cm’) xp = (C— em) — (C — em’) =c (m’ — mm) 
C 
— —™ 
C 
Hver af de 10 Observationer giver en Ligning af 
denne Form, og af disse kunde Constanterne %, & og x 
bestemmes. 
Da Værdien af 1; maa antages at være bestemt nøj- 
agtigere ved Fysikernes Observationer, (ved hvilke Glassets 
Sammentrykning og Temperaturens Indflydelse bedre kan 
bestemmes) end den kan findes af Piezometerobservationerne, 
har jeg antaget 1; bekjendt og søgt af Ligningerne at be- 
stemme de sandsynligste Værdier for & og ~. 
Ligningernes Form bliver da 
\ 
0 So 
1) == 6? 70 | rp=m — m 
@ C 
Each of the 10 observations gives an equation of the 
above form; and from these equations the constants 7, €, 
and x admit of being determined. 
Since the value of 7, in all probability has been de- 
termined more accurately by the observations of the phys- 
icists (from which the compression of the glass and the 
effect of the temperature can be determined better) than 
it will admit of being found by the piezometer-obser- 
vations, I have assumed 7, as known, and have sought to 
determine from the equations the most probable values of 
é and x. 
The form of the equations will accordingly be 
CG NE 
5 =p et | — | p ost ms np — (Mm — mM). 
Den norske Nordhavsexpedition. 
H. Mohn: Nordhavets Dybder, Temperatur og Strømninger. 26 
