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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2014 Apr 08 1253 UTC

Vorhersage des SIDC

Sonneneruptionen

Eruptive (C-class flares expected, probability >=50%)

Geomagnetismus

Quiet (A<20 and K<4)

Sonnenprotonen

Quiet

	10cm Fluss	Ap
08 Apr 2014	140	010
09 Apr 2014	140	011
10 Apr 2014	140	007

Bulletin

Since our last bulletin, three C-class flares were produced. They all originated from Catania sunspot group 8 (NOAA AR 1926). The GOES X-ray flux background was at B-class level. A new region emerged near S03E30. Eruptive flaring activity is expected for the next 48 hours with a slight chance for M-class flares. No Earth bounded CMEs were observed. Solar wind observations from ACE showed an increase of the solar wind speed at 17h UT of April 7 from 360 to 480 km/s and then a decline to 400 km/s. The magnitude of the interplanetary magnetic field varied between 1 and 11 nT, with a Bz component fluctuating between -10 and 6 nT. The periods with a negative Bz resulted in unsettled to active magnetic conditions (both local K at Dourbes and NOAA planetary Kp). So far, there were no clear signatures of arrival of a shock related to the CME of April 4, but it is still possible in the next few hours. Unsettled conditions are expected for the next 48 hours.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 085, basierend auf 20 Stationen.

Solarindizes für den 07 Apr 2014

Wolf-Zahl Catania	131
10cm Solarflux	140
AK Chambon La Forêt	014
AK Wingst	011
Geschätzer Ap-Wert	010
Geschätzte internationale Sonnenfleckenzahl	082 - Basierend auf 24 Stationen

Zusammenfassung auffälliger Ereignisse

Zur Verfügung gestellt vom Solar Influences Data Analysis Center© - SIDC - Verarbeitet von SpaceWeatherLive

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