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Fejlen i Observationsklokkeslettet ved Mi (Idag. er størst,
— 20.m5, den 28de Juli og næststørst, — 9.’"1 den 4de
August. Summen af positive Fejl er 2.ml, fordelt paa 3
Dage eller 0.m7 pr. Dag. Summen af negative Fejl er
— 37.ffl6, fordelt paa 4 Dage, eller — 9.m4 pr. Dag. Den
gjennemsnitlige Fejl bliver — 35.m5, fordelt paa. 9 Dage (2
Dage til Ankers under Jan Mayen) eller — 3."’9 pr. Dag.
The error in the hour of observation at noon had
its greatest value, — 20.m5, July 28th, and its next greatest,
— 9.™I, August 4th. The sum of the positive errors is 2.ml,
distributed over 3 days, or 0.m7 per day. The sum of the
k negative errors is — 37."6, distributed over 4 days, or—9.m4
per day. The average error is thus — 35.m5, distributed
over 9 days (2 days at anchor off the coast of Jan Mayen),
or — 3.m9 per day.
a. m.
Klokkeslet i* 2U s’1 4’’ 5’* 6a 7 ’• 8’’ g’* ioA 11A 12’.’ Hour.
Corr. Obs.media 2.37 2.43 2.23 2.30 2.47 2.69 2.89 3.18 3.31 3.55 3.62 3.83 Corr. obs. means.
Afv.fraDagsmedium–0.73—0.67-—0.87—0.80—0.63—0.41—0.21 0.08 0.21 0.45 0.52 0.73 Diff. from daily mean.
Beregnet Afvigelse –0.7 3 —0.78—0.80—0.76—0.64—0.44—019 0.05 0.26 0.42 0.55’ 0.68 Computed difference.
Forskjel: Obs. — Ber. 0.00 o.11—0.07—0.04 o.01 0.03—0.02 003—0.05 0.03—0.03 0.05 Diff.: obs. — comp.
p. m.
Corr. Obs.media 3.92 3.96 4.00 3.93 3.89 3.36 3.13 3.03 2.78 2.60 2.53 2.37 Corr. obs. means.
Afv.fraDagsmedium 0.82 0.86 0.90 0.83 0.79 0.26 0.03—0.07—0.32—0.50—0.57—0.73 Diff. from daily mean.
Beregnet Afvigelse 0.81 0.91 0.93 0.84 0.64 0.37 o.10—0.15—0.34—0.48—0.58 —0.66 Computed difference.
Forskjel: Obs. — Ber. 0.01 —0.05 — 0.03 —o.01 0.15 —o.11 —0.07 0.08 0.02 —0.02 0.01 —0.07 Diff.: obs. — comp.
Formel (Formula), t, = 3.° 10 —0.°850 sin (61° 41 .’3 -f t) + 0.°0ön sin (22" 37’ + 2t)
+ 0."0?6 sin (80° 10’ + St) — 0.°013 sin (96° 23’ + 41)
Figuren Pl. I, Luftens Temperatur 1877 B,
Polar-Strommen, viser, at den beregnede Curve slutter sig godt
til den observerede. MF = + 0.°046.
Efter Formelen beregnes:
Minimum: —0.u81, 2A53™a.m.,Maximum: -f-0.°93, 2A42mp.m.
Medium indtræffer 7A 46m a.m. og 7A 22™ p.m.
Amplitude: l.°74.
Den forholdsvis store Amplitude, som saaledes er fundet
i Polarstrømmens Strøg, synes hovedsagelig at hidrøre fra den
senere Aarstid, i hvilken Observationerne her ere tagne.
De faa Dage af August, som Expeditionen brugte paa
Tilbagereisen til Norge, nemlig den 6te til 10de August,
udvise en endnu større Amplitude end den vecl Jan Mayen
fundne. Observationerne fra disse faa Dage, af hvilke der
kun vilde være 4 hele Døgn til Disposition for Beregning
af den daglige Periode, har jeg ikke villet slaa sammen
med de tidligere udenfor Norges Kyst tagne, da. de
repræsentere en temmelig forskjellig Aarstid. Til en selvstændig
Beregning er Dagenes Antal forekommet mig for ringe.
1878.
Den første Gruppe omfatter Expeditionens 2 første
Ture, fra Slutningen af Juni til henimod Slutningen af
The figure in Pl. I, Temperature of the Air. 1877 B,
Polar Current, shows that the computed curve agrees well
with that observed. MF = + 0.(l046.
From the formula is computed —
Minimum — 0.°81, 2A 53’" a.m.; Maximum 0.°93, 2A 42™ p.m.
The Mean occurs at 7A 46m a.m. and 7A 22™ p.m.
Total Range: l.°74.
The comparatively extensive range thus found from
the observations taken within the limits of the Polar
current, would appear to be chiefly a result of the late season
of the year. The few days in August passed on the return
of the Expedition to Norway, viz. from the 6th to the 10th
of that month, exhibit a still greater oscillation than that
found from the observations off Jan Mayen. The
observations made on this limited number of days, of which only
4 whole ones could be devoted to computing the diurnal
period, I have not seen fit to group along with those
previously taken off the Norwegian coast, representing as
they do a comparatively different season of the year. To
form a separate group, I have deemed the number of days
too small.
1878.
The first group comprises the observations taken on
the 2 first cruises of the Expedition, from the end of June
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