Rückkehr der Sonnenfleckengruppen - nachwievor aktiv!

Geschrieben von mica am 12. November 2003 14:10:17:

Als Antwort auf: Vulkane / Sonne / Naturphänomene (12.11.) (owT) geschrieben von Johannes am 12. November 2003 00:44:00:

Heute kommt die erste Gruppe, 484, im Osten der Sonnescheibe wieder ins Blickfeld.
Ihr entsprangen 2 X-Flares und mehr als 10 M-Flares. Obwohl eine Abnahme der Aktiität vermutet wurde, zeigen EIT-Bilder, dass sich hinter dem östlichen Rand einiges abspielt.

Warten wir dann auf den Rest der Bande!


:Issued: 2003 Nov 12 1152 UTC
:Product: documentation at http://sidc.oma.be/products/presto
#------------------------------------------------------------------------------#
# FAST WARNING 'PRESTO' MESSAGE from the SIDC (RWC-Belgium) #
#------------------------------------------------------------------------------#
Solar activity is expected to increase considerably. Most activity is expected
from the east limb of the sun, where the sunspot groups responsible for the
commotion during the second half of October will soon be returning. The first to
re-appear (later today) is Catania sunspot group 65 (NOAA 0484). This group
generated 2 X-flares and more than 10 M-flares on its previous rotation.
Although it appeared to be declining when rotating over the west limb, current
EIT images clearly show it is still very active just behind the east limb.
The solar wind speed remains high at more than 700 km/s. With the
interplanetary magnetic field mildly southwards (at about -5nT), this has led to
the expected minor geomagnetic storm conditions during most of yesterday's UT
day. In view of the size of the coronal hole responsible for these
perturbations, and because in addition a shock may arrive (late on Nov. 13) from
the CME associated with yesterday's M1.6 flare we expect geomagnetic conditions
to remain at active to minor storm levels for the next 48 hours.
http://sidc.oma.be/products/presto/index.php3


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