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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2017 Dec 07 1230 UTC

Vorhersage des SIDC

Sonneneruptionen

Quiet conditions (<50% probability of C-class flares)

Geomagnetismus

Quiet (A<20 and K<4)

Sonnenprotonen

Quiet

	10cm Fluss	Ap
07 Dec 2017	070	008
08 Dec 2017	072	007
09 Dec 2017	072	007

Bulletin

The solar activity remained quiet over the past 24 hours. No C-class flare and above have been recorded. The bipolar sunspot (Catania sunspot group 65, NOAA Active Region 2690) has produced one small B-class flare. Quiet flaring conditions are expected for the next 24-hour period.

No Earth directed Coronal Mass Ejection has been observed. The greater than 10 MeV solar protons flux remained at nominal levels over the past 24 hours and is expected to remain so.

The Earth remained under the influence of the solar wind stream associated with the Coronal Hole (which has crossed the central meridian on Dec 01). The wind speed has gradually decreased from 550 km/s to 500 km/s. The interplanetary magnetic field magnitude remained below 6 nT, and the Bz component fluctuated between -5 and 5 nT. The solar wind conditions are expected to continue to decline and return to nominal conditions.

Geomagnetic conditions were quiet to unsettle (local K Dourbes 1-3, NOAA Kp 2-3) due to the solar wind stream associated with the Coronal Hole. The conditions are expected to return to the nominal level as the solar wind is declining.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 010, basierend auf 10 Stationen.

Solarindizes für den 06 Dec 2017

Wolf-Zahl Catania	013
10cm Solarflux	068
AK Chambon La Forêt	019
AK Wingst	016
Geschätzer Ap-Wert	017
Geschätzte internationale Sonnenfleckenzahl	013 - Basierend auf 13 Stationen

Zusammenfassung auffälliger Ereignisse

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

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