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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2017 Dec 09 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
09 Dec 2017	068	003
10 Dec 2017	066	004
11 Dec 2017	068	037

Bulletin

The solar activity remained quiet over the past 24 hours. The visible solar disc is spotless and no flare has been recorded. 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 solar wind speed has continued to gradually decrease from 460 km/s to 380 km/s. The interplanetary magnetic field magnitude remained below 6 nT, and the Bz component fluctuated between -3 and 3 nT. The solar wind speed is expected to decline further to reach the nominal conditions. Enhancements of the solar wind conditions are expected when the high speed solar wind stream associated with the coronal hole (that transited the central meridian on Dec, 8) reaches Earth by Dec 11.

The geomagnetic conditions were quiet with K-Dourbes and Kp ranging between 1 and 2. The geomagnetic activity is expected to be quiet for the next following days until the arrival of the high speed stream on Dec 11.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 000, basierend auf 13 Stationen.

Solarindizes für den 08 Dec 2017

Wolf-Zahl Catania	///
10cm Solarflux	070
AK Chambon La Forêt	008
AK Wingst	006
Geschätzer Ap-Wert	004
Geschätzte internationale Sonnenfleckenzahl	000 - Basierend auf 22 Stationen

Zusammenfassung auffälliger Ereignisse

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

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