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Overfladen nedad til et Minimum og derpaa stadig voxer
indtil Bunden.
1 disse Tilfælder forslaa ikke Indextheniioinetrene til
at registrere de dybere Lags virkelige Temperatur.
Station No. 148, i Vestfjorden udenfor Bodø. afgiver et
ud-mei’ket Exempel herpaa, som følgende Tabel viser. De
indklamrede Tal ere ikke anvendte til den endelige
Bestemmelse af Temperaturen.
Dybdo i Favne (Depth in Fathoms) O 10 20 jo 4Q SO 60 70 80 90 IOO 120 140
liuloxtlionnoiiiL’ter, Minimum iImle.r-Thcrmometer. Minimum) 6".8 4°-7 4". 2 40. i 3"-<) 3* -7 (3"-8l (3"-9) (3 -9) (3 .9) - (4 -o)
Kviksolvpii’zoinetcr (Merctinj-Piezowder) 6 .8 4 -8 4 -2 4 -o 3 .9 3 -8 13 -81 (3 -8) (3 -8) (3 ■<>) - -
Vemlrtlu’i’in. Xegr. .t Zainhru (hirviiinji-Thrrm.. Xet/r. A’Zumb.) 6 .8 4 -7 4 -1 4 -o 3 -0 3 -8 3 ■<> 4 0 - 4 -3 4 -6 5 -o
Antaget MiiUM I Adopted Mean) 7.6 6 .8 4 -7 4 -2 4 0 3 •<> 3 -8 3 -9 4 0 - 4 -3 4 -6 5 -o
from the surface downwards to a minimum, and then
steadily to increase to the bottom.
When such is the ease, index-thermometers are
not able to register the true temperature of the deeper
strata. Station No. 148, in the Vestfjord, off Bodø,
furnishes a good illustration of this, as may be seen from
the following Table. The figures enclosed parenthetically
were not made use of in the final determination of the
temperature.
Man ser, at de to Indexthermoinetre give næsten
constante Temperaturer under Minimum i (>0 Favne, og
at de ikke have kunnet angive Temperaturens Tilvæxt i
de dybere Lag.
Efter saaledes at, have gjort Heile lbr de anvendte
Instrumenter, gaar jeg over til at meddele de med samme
tagne Observationer.
We perceive that the two index-thermometers give
well-nigh constant temperatures below the minimum at a
depth of 60 fathoms, and also that they have failed to
indicate the rise of temperature in the deeper strata.
Having now described the instruments, [ shall pass
on to the observations taken with them.
2. Dybvandstemperatur.
I Captein Willes Afhandling: "Apparaterne og deres
Brug" beskrives Fremgangsmaaden ved Maalingen af
Dyb-vandstcmperaturerne saaledes:
Bundteinperatiir. Lodning med Rorlod. Loddet (med
Vaudhenter) loftedes, saasnart Skibets Fart var standset,
ud over Loddebroen, og liredes, idet en Mand drejede
Svej-ven paa Bullen, omtrent en Favn ned.
Dybvandsthermo-nietrene sattes fra Loddebroen fast paa Lodlinen ....
(Side li»).
Lodning med Baillie-Maskinen.
DybvandSthermonie-trene fastgjordes paa Lodlinen 1 ä 2 Favne over
Vand-hcnteren eller Lodderne, hvorpaa man med
Indhivningsma-skinen udfirede raskt 200 eller 300 Favne (Side 22). Den
paafolgende Pause benyttede jeg undertiden til at paasætte
et. Dybvandsthermometer, der kunde registrere
Temperaturen 200 eller 800 Favne over Bunden. Stationerne 20(5,
217, 243, 304, 307, 308, 331, 350, 352.
Lodlinens Ophaling. Naar Loddet var kommet i
Bund, gaves de medsendte Dybthernioinetre Tid til at antage
det omgivende Vands Temperatur . . . Naar Loddet
nærmede sig Vandskorpen, skede Indhivningen langsommere.
Thcrmometrene toges af Linen, under fornøden Stands i
Indhivningen, eftersom de kom over liækken paa
Loddebroen (Side 24).
2. Deep-sea Temperatures.
ln Gapt. Wille’s Memoir, "The Apparatus and How
Used," the method adopted for taking] deep-sea temperatures
was as follows:
Bottom-temperature. Sounding with the Tube-load.
As soon as the vessel had lost her headway, the lead
(with the water-bottle attached) was lifted over the
sounding-bridge, and then lowered about a fathom, a man
turning the handle of the reel. The deep-sea thermometers
were fastened to the line from the bridge .... (p. 10).
Sounding with the Baillie Machine. — The deep-sea
thermometers were made fast to the line 1 or 2 fathoms
above the water-bottle or the weight, after which we rapidly
veered 200 or 300 fathoms of line with the donkey-engine
(p. 22). The ensuing pause I sometimes took advantage
of to fasten on a deep-sea thermometer, with the object of
registering the temperature 200 or 300 fathoms above the
bottom. Stations 20(5, 217, 243, 304, 307, 308, 331, 350, 352.
Hearing in the Line. — The lead having reached the
bottom, sufficient time was allowed for the deep-sea
thermometers to assume the temperature of the surrounding
water...... On the lead Hearing the surface of the
water, the speed of the donkey-engine was reduced. The
needful stoppages, too, were made to detach the
thermometers as they came over the rail of the sounding-bridge
ll>. 24).
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