- Project Runeberg -  Den Norske Nordhavs-expedition 1876-1878 / The Norwegian North-Atlantic Expedition 1876-1878 / 2. Bind /
66

(1880-1901) [MARC]
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memo for — 1°.l og — 1°.2 folge et lignende Lob i større
Dybder. Isothermen for — 1°.3 findes i Jan
Mayen-Ren-don og Grønlandshavet, samt paa den norske (østre) Side
af Norskedybet og i den dybe nordenfra indskjærende Bugt
udenfor di’ norske Kystbanker ved Sydenden af
Vesteraalseggen. Paa den vestre Skraaning af Norskedybet ei-
Temperaturen ikke under — 1°.3. I Grønlandshavet findes
rimeligvis, fiter de danske Observationer i Nord for Island
at domme (Snit XXXII. Pl. XIV). — 1°.6.

Tvorsnit XIV gaar mellom don 08. og 67. Breddegrad
over Rost, den yderste af Lofotens Øer, og Mundingen af
Vestfjorden. Det viser den sydlige Del af Vesteraalseggen
i Profil. Hor findes 0° i 400 Favnes Dyb og —1° i 450.
Mellom 0° og 5° ligge Isothermerne meget tæt.
Isothermen for 6° udviser en poseformet Nedsænkning udenfor
Eggen af Banken. Paa Landsiden omslutter saavel
udenfor som indenfor Rost. det er, i Vestfjorden. Isothernion
for 5° et Tomperaturminimuin, der ude paa Banken
vesten-for Bost ligger ved Bunden med o. 4°.5 Varme, men i
selve Vestfjorden har varmere Vand saavel over som
under sig. Vestfjordens Bundtomperatur (Station No.
255) og Overfladens aarlige Middeltemperatur er omkring
6", (Pl. XVI) medens der i 60 Favnes Dyb er et Minimum
paa omkring 4°.5 (Stat. No. 148. 254 og 255).

Tvorsnit NV gaar fra Grønland (71° 20’) over
Grønlandshavet. Jan Maven, Lofotdybet og Vesteraalseggen til
Vesteraalen (69°). Den højeste Temperatur er mellem 6°
og 7°. Alle Varmegradsisoth erm er sænke sig mod Dybet
udenfor Vesteraalseggen og midtvejs mellem Norge og Jan
Mayen. De hæve sig mod Eggen og i endnu højere Grad
mod A’est, navnlig de for 0°, lu, 2° og 3°.
Varmegrads-isothermerne ligge mindre tæt end söndenfor. Temperaturen
i Overfladen er forholdsvis lavere og Nulgradsisothernien
ligger dybere, idet den paa sine dybeste Punkter naar ned
til 660 Favne, hvilket er mindst 200 Favne dybere end i
Tvorsnit XIII. Østenfor Jan Mayen gaar Isothermen for
0° raskt tilvejrs og naar Overfladen; fra denne til Bunden
er iskoldt Vand. Isothermen for’—1°, der i Station 183
naar sit største Dyb, 1100 Favne, stiger til begge Sider.
Østenfor Jan Mayen danner den i de øvre Lag, 20 til
120 Favne, en afsluttet Curve, der indeslutter et Minimum
af Temperatur paa indtil — 1°.7 (Stat. 217 og følgende); i de
dybere Lag omslutter don et dybere liggende Minimum paa
mindst 1°.3. Lige under Østkysten af Jan Mayen er
Temperaturen forholdsvis højere (Ståt. 226, 222).
Vesten-for .Tau Mayen or lutter Kuldegrader, og i større Dyb ned
til — 1°.5. Isothermen for — 1°.2 naar [ikke Dybet mellem
dan Maven og Norge. Her er ved Bunden et
Temperatur-maximum paa — 1°. 17 (Ståt. 213). Isothermen for — 1°.3
findes omkring Jan Maven, samt paa Skraaningen paa
Dybets vestre Side og paa Bunden paa. dets østre Side,

the eastern side to 400 fathoms along the steep declivity
off the Norway coastal banks, on the western to the
surface, ofl’ Greenland. The isotherms for — l".l and — 1".2
take a similar course in greater depths. The isotherm
for —1".3 is met with in the Jan-Maven Channel and the
Greenland Sea, as also on the Norwegian (eastern i side
of the Norway Deep, and in the deep bay extending from
the north off the Norwegian coastal banks at the southern
extremity of the Vosteraalseg. On the western declivity
of the Norway Deep, the temperature is not under

— 1°.3. In the Greenland Sea. judging from the Danish
observations taken north of Iceland (Section XXXII. I’l.
XIV), — 1°.6 most probably occurs.

Section XIV extends from between the (58th and
67th parallels of latitude across Bost, the outermost of
the Lofoten Islands, and the mouth of the Vestfjord, li
shows the southern part of the Vesteraalseg in profile
Here 0° occurs at a depth of 400 fathoms, and — 1" at a
depth of 450. Between 0" and 5° the isotherms lie
exceedingly close. The isotherm for 6" exhibits a sac-like
depression off the edge of the bank. On tliej land-side,
the isotherm for 5° encloses both without and within
Bost. i. e. in the Vestfjord, a minimum of temperature,
which lies, out on the bank west of Røst, at the bottom,
with a temperature of about 4n.5, but in the Vestfjord itself
has warmer water both above and below. The
bottom-temperature in the Vestfjord (Station No. 255) and the
annual mean temperature at the surface is about 6" (PI.
XVI), whereas in 60 fathoms there is a minimum of about
4°.5 (Stations No. 148. 254. and 255).

Section XV extends from Greenland (71" 20’) across
the Greenland Sea, Jan Mayen, the Lofoten Deep, and the
Vesteraalseg to Vesteraalen (69°). The highest
temperature is between 6° and 7". All isotherms for a temperature
above 0° sink towards the deep off the Vesteraalseg and
midway between Norway and dan Mayen. They rise towards
the edge of the bank and still more so towards the west,
in particular those for 0". 1". 2". and 3". The isotherms for a
temperature above 0° lie less close than farther south. The
temperature at the surface is relatively lower, and the isotherm
for 0° lies deeper, reaching at its deepest points 660 fathoms,
or at least 200]fathoms deeper than in Section XIII. East
of Jan Mayen, the isotherm for 0" juts abruptly up, and
reaches the surface, whence ice-cold water extends to the
bottom. The isotherm for — 1°, which sinks to its
greatest depth, 1100 fathoms, at Station No. 183, rises on
either side. East of Jan Maven, it forms in the upper
strata— from 20 to 120 fathoms — a. closed curve, which
encompasses a minimum of temperature, reaching — 1°.7
(Stations 217 and following); in the deeper strata, it
encloses a deeper-lying minimum of at least -l".3.
Immediately adjacent to the east coast of Jan Mayen, the
temperature is relatively higher (Stats. 22(>, 222). West of Jan
Mayen, occur exclusively degrees below 0°, and in greater
depths a temperature as low as — 1°.5. The isotherm for

— 1°.2 does not reach the deep between dan Mayen and
Norway. Here is found at the bottom a maximum-temperature ot

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