1906. No.3. AMUNDSEN’S OCEANPGRAPHIC OBSERVATIONS IN 1%1. 29 
perfectly accurate, that the cooling on the surface was still going on, 
on May 6, 1903. 
In May, 1904, the conditions were different in this same region; 
the temperatures were higher and the salinities lower. 
It is on this same flat coast bank or shelf that Wollebæk's Stat. I, 
(May 25, 1900, see Fig. 1, W I) and Amundsen’s Stat. 6, (May 9, 1901), 
are situated. They show an equally complete vertical circulation, but 
with much colder water (—1'65* C. and —1°8° C.) and lower salinities 
(34°06 %/00 and 34-40 %00), which might be expected, as they are nearer land. 
In these same regions later in the season, there will be found 
entirely different conditions. The upper strata are then much warmer, 
and on the banks the salinity is, as a rule, much lower. As example a 
comparison between the observations in the vertical series below, may 
SEINE, 
Stat. 10 Stat. 1 Stat. 13 Stat. 4 Stat. 14 Stat. 5 Mean 
May 28, Aug. 1, May 29, Aug. 2, May 29, Aug. 3 Differen- 
Depth 1904 1904 1904 1904 1904 1904 — ces be- 
in 69° 45 N.|69 44° N.|| 70° 42" N.|70 40 N. 79 47 N. 70° 48° N. || tween May 
Metres: 137 20 E. 15720 20° El 46" 0'E. I 460 E | 47 8 E | 47 0 E and 
Depth Depth Depth Depth Depth Depth August 
116 m. 116 m. IIo m. IIo m. 159 m. 155 m. 1904 
" f 2°0 879 I) 1°39 78 gr Ear 78 { 66° C. 
Ul 3431 3429 || 3474 3445 |\ 3487 34312" | 029 4, 
LE | 1:68 82 6°42 6.02 ||( 62° C. 
LU 34°60 34°45 34°54 3470 Ht 9717 Yo 
Ba f 155 37 FOT Tr sas if Era 2470 
\ 3460 3463 |1 3476 3463 | 3487 à 009 
ar ES 165 lf 083 | TS KE | 262 | 08° C. 
DE: EN 3460 | 3474 34°67 3472 || 006 oo 
oe | 1°35 165 |f 055 EST ros | I'Q fh 106" € 
OA 3461 3463 | 3479 34°67 | 3481 [it 006 %,, 
Å y 05 0°25 f 0'85 | 1°23 ç 035 C 
U IN 3481 3467 N 3487 3479 | 0°07 Lo 
1°35 165 | 03? C. 
DE \ 34°61 34°63 
ae | (— 0'05 o'5 R 0°55 C. 
Fvl ( 3488 3476 | [0712 °/,0] 
It is seen, that the difference in temperature, produced in 65 days, 
is very nearly the same at the three different places above, being slightly 
higher at the western Station. It is between 6'4 and 6'8* C. near the 
surface, between 5'9 and 6°5° C. in 20 metres, between 0'15 and 1:5° C. 
in 50 metres, between 0'3 and 0'85” in 75 metres, about 0'3 or 0'4C. in 
100 metres; and 055" C. in 150 metres. But the differences in salinity 
are on the whole considerably greater at the eastern Stations. 
In the deeper western parts of the sea, which is more exposed to 
horizontal circulation, and farther away from land and from the region 
