Polarlicht am 12./13.09.2014

 


schwache Strahlen; Azimut = Nordhorizont (N ~ Bildmitte)
21:07 UTC   4/16mm  t=8“ CMOS-Sensor 1600ASA Canon EOS 600D, automatischer Weißabgleich
(eingefügtes Bild = Autokorrektur in IrfanView)





Beobachtungsort: Rostock-Nordwest (Diedrichshagen / Elmenhorst)
Koordinaten: ca. 54.2°N / 12.0°E
 
 

Zu den Ursachen dieses Polarlichtes ging aus Berichten der USAF/NOAA u.a. hervor:

Auszüge daraus auf englisch:

Joint USAF/NOAA Solar Geophysical Activity Report and Forecast
SDF Number 253 Issued at 2200Z on 10 Sep 2014

...
IA.  Analysis of Solar Active Regions and Activity from 09/2100Z to
10/2100Z: Solar activity has been at high levels for the past 24 hours.
The largest solar event of the period was an X1/2b event observed at
10/1745Z from Region 2158 (N15E00). There are currently 7 numbered
sunspot regions on the disk.

...

IIB.  Geophysical Activity Forecast: The geomagnetic field is expected
to be at quiet levels on day one (11 Sep), quiet to major storm levels
on day two (12 Sep) and quiet to minor storm levels on day three (13
Sep). Protons have a chance of crossing threshold on days one, two, and
three (11 Sep, 12 Sep, 13 Sep).

...

VI.  Geomagnetic Activity Probabilities 11 Sep-13 Sep
A.  Middle Latitudes
Active                10/30/45
Minor Storm           05/45/25
Major-severe storm    01/20/05
B.  High Latitudes
Active                15/05/10
Minor Storm           20/15/25
Major-severe storm    20/79/70

--------------------------------------------------------------------------------------------------------------------------------------------------------------------

Joint USAF/NOAA Solar Geophysical Activity Report and Forecast
SDF Number 255 Issued at 2200Z on 12 Sep 2014

...
IIA.  Geophysical Activity Summary 11/2100Z to 12/2100Z: The geomagnetic
field has been at quiet to major storm levels for the past 24 hours.
Solar wind speed, as measured by the ACE spacecraft, reached a peak
speed of 672 km/s at 12/1534Z. Total IMF reached 31 nT at 12/1813Z. The
maximum southward component of Bz reached -15 nT at 12/1945Z. Protons
greater than 10 MeV at geosynchronous orbit reached a peak level of 126
pfu at 12/1555Z. Electrons greater than 2 MeV at geosynchronous orbit
reached a peak level of 504 pfu.

IIB.  Geophysical Activity Forecast: The geomagnetic field is expected
to be at active to severe storm levels on day one (13 Sep), unsettled to
minor storm levels on day two (14 Sep) and quiet to active levels on day
three (15 Sep). Protons are expected to cross threshold on days one and
two (13 Sep, 14 Sep) and are expected to cross threshold on day three
(15 Sep).

...

--------------------------------------------------------------------------------------------------------------------------------------------------------------------

Joint USAF/NOAA Solar Geophysical Activity Report and Forecast
SDF Number 256 Issued at 2200Z on 13 Sep 2014

...
IIA.  Geophysical Activity Summary 12/2100Z to 13/2100Z: The geomagnetic
field has been at quiet to severe storm levels for the past 24 hours.
Solar wind speed, as measured by the ACE spacecraft, reached a peak
speed of 791 km/s at 12/2233Z. Total IMF reached 30 nT at 12/2251Z. The
maximum southward component of Bz reached -17 nT at 12/2202Z. Protons
greater than 10 MeV at geosynchronous orbit reached a peak level of 20
pfu at 12/2100Z.

...

K-Indices vom 12.09.14:
Tromsø / Norwegen:
 
7
5
2
2
 
3
6
5
6
Niemegk / Deutschland:
5
4
2
2
 
2
4
5
6
K-planetarisch:  5+  4+  2o
3o
  2-  5o  5-  6+

K-Indices vom 13.09.14:
Tromsø / Norwegen:
 
4
3
4
1
 
2
2
1
0
Niemegk / Deutschland:
3
3
4
2
 
2
2
3
1
K-planetarisch:
 4-
3-
  4o  1+  
2o
2o
  2+  1+

Kurzbericht:
Beobachtungsbeginn: 19:50UTC / 21:50MESZ
Beobachtungsende: 21:20UTC / 23:20MESZ
Bedingungen: Die Durchsicht war grundsätzlich sehr gut. Allerdings ging der abnehmende Mond auf (mehr als 50 Prozent beleuchtet). Zusätzlich störten immer wieder tiefe Kumuluswolkenbänke von der Ostsee kommend, speziell im Sektor NNW-N bis teils ca. 15 Grad Höhe.
Auch die photographischen Bedingungen am Beobachtungsstandort waren somit durch zunehmendes Streulicht vom Mond und der horizontnahen Wolkenbedeckung beeinträchtigt.
Diese Sichtung konnte "nur" als photographisches Polarlicht festgehalten werden.
 
 

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