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106
1878. 8 a.m. z p.m. 8 p.m.
Tromsø — 0.07 mm + o. 11""" — 0.04""
Gjesvær —0.32 0.24 0.07.
Vardø — 0.04 -f- 0.05 — 0.02.
Middel (Mean) —0.14 +0.13 0.00.
Expedition 1878 —0.25 +0.19 +0.07.
Kysten og Expeditionen have fremdeles begge Minimum
orn Morgenen og Maximum 0111 Eftermiddagen.
Tages Middeltallet for alle 3 Aar, faar man:
Norske Kyststationer —0.18""" +0.14""" -f 0.03""". Norwegian Coast-Stations.
Expeditionen — 0.17 + 17 Expedition.
Altsaa en særdeles nær Overensstemmelse. Denne
Undersøgelse viser saaledes, at de ombord paa
Expeditionen gjorte Barometeriagttagelser have ledet til en daglig
Periode for Lufttrykkets Forandring, der har en reel
Betydning: den stemmer overens med det samme Fænomens
daglige Forandring paa Stationerne paa Kysten.
Dernæst har jeg undersøgt, hvorvidt den daglige
Forandring af Lufttrykket paa Kysten rundt det norske Hav,
som er iagttaget i de tre Sommere, da Expeditionen
arbejdede i Søen, er overensstemmende med den, der fremgaar
af en længere Observationsrække. Følgende Tabel, der
er beregnet paa samme Maade som den ovenfor givne,
viser Resultatet.
Both the coast-stations and the Expedition have still
the minimum in the morning and the maximum in the
afternoon.
If we take the mean of the 3 years, we get —
Accordingly a very close agreement. This
investigation shows, therefore, that, from the barometrical
observations taken at sea on the Expedition has been educed a
diurnal period for the pressure of the air, to which a real
value may be attached: it corresponds with the diurnal
variation in the same phenomenon at the stations on the
coast.
I next investigated whether the diurnal variation in
the pressure on the coast of the Norwegian Sea observed
on the three summer cruises of the Expedition, corresponds
with that resulting from a longer series of observations.
The following Table, computed in the same manner as
that given above, shows the result.
Norske Kyst-Stationer. Aar (Year). Middel af Juni, Juli og August.
(Norw. Coast-Stations). (Mean for June, July, and August).
8 a.m. 2 p.m. 8 p.m.
Vardø 13 1868—80 —o.i8ram + 0.06""" -j-o.i2mm.
Tromsø 10 68—81 —0.06 -f- 0.02 +0.05
Bodø 13 68—80 —0.10 +0.05 +0.04
Brønø 12 69—80 —0.06 +0.08 —0.03
Christiansund 20 61—80 —o.ix -f- 0.02 -f- 0.09
Florø li 69—80 —0.10 + 0.09 0.00
Bergen 20 61—80 —0.11 -f" 0.05 +0.07
Skudesnes 20 61—80 —0.13 -f 0.08 -(-0.05
Mandal 20 61—80 —0.06 +0.09 —0.04
Middel (Mean) —o. 10 +0.06 -j- 0.04
Færøerne og Islands Østkyst.
(The Færoe Islands and East Coast of Iceland) Aar (Year) 8 a.m. 2 p.m. 9 p.m.
Thorshavn 6 1874—79 —o.i2mm 0.00""’’ +0.13""".
Berufjord 6 74—79 — 0.20 — 0.03 -j- 0.24
Middel (Mean)
— 0.16 —0.02 +0.18
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