Vaata esmaspäev, 18 märts 2002 arhiivi
Päikese aktiivsuse aruanne
Any mentioned solar flare in this report has a scaling factor applied by the Space Weather Prediction Center (SWPC). Because of the SWPC scaling factor, solar flares are reported as 42% smaller than for the science quality data. The scaling factor has been removed from our archived solar flare data to reflect the true physical units.
Päikese ja geofüüsikalise aktiivsuse aruanne 2002 Mar 18 2200 UTCValminud NOAA © SWPC ja töödeldud SpaceWeatherLive.com-iga
Ühine USAF / NOAA päikese- ja geofüüsikaalase aktiivsuse aruanne
SDF number 077 Välja antud 2200Z kuni 18 Mar 2002IA. Päikese aktiivsete piirkondade ja päikeseaktiivsuse analüüs alates 17-2100Z kuni 18-2100Z Solar activity was moderate. Activity in the vicinity
of Region 9866 (S09W46) was associated with a long duration M1 flare
which began at 0216 UTC and ended at 0400 UTC. Also associated with
this event were a type IV sweep and a halo CME visible in LASCO
imagery. Region 9866 continues to decay slowly. C-class flare
activity was observed from Region 9870 (S20W39) which appears to
have some new, opposite polarity flux emergence. Region 9871
(S19E07) produced a C8/1f flare at 1918 UTC and is currently the
largest region on the disk.
IB. Päikese aktiivsuse ennustus
Solar activity is expected to be
moderate. Regions 9866 and 9871 are considered to be the most likely
sources for M-class flares. There is a slight chance for a major
flare during the next three days.
IIA. Summaarne geofüüsikaline aktiivsus 17-2100Z kuni 18-2100Z
The geomagnetic field was quiet until 1323 UTC when a strong sudden
impulse (SI) was observed. The SI measured 42 nT on the Boulder
magnetometer. The SI followed the passage of a shock at ACE at 1237
UTC. The post shock flow at ACE consisted of enhanced magnetic
fields but so far they have been predominantly northward.
Geomagnetic activity subsequent to the SI has been unsettled to
active. The greater than 10 MeV proton event that began at 17/0820
UTC officially ended at 17/1230 UTC, but flux levels remained
enhanced thereafter. With the arrival of the shock the protons once
again reached event level, beginning at 19/1300 UTC. The maximum
flux observed so far was 25 PFU at 19/1535 UTC.
IIB. Geofüüsikalise aktiivsuse ennustus
The geomagnetic field is
expected to be mostly active for the next 24 hours, with a chance
for some isolated minor storm periods. After the current transient
flow subsides there should be a lull in activity, but another shock
is expected to arrive near mid-day (UT time) on the 20th in response
to today's halo CME. Activity following this shock is expected to be
mostly active. Conditions should subside to unsettled sometime on
the third day. The greater than 10 MeV proton event is likely to end
sometime in the next 12 hours.
III. Sündmuste tõenäosus 19 Markuni 21 Mar
| Klass M | 55% | 55% | 55% |
| Klass X | 10% | 10% | 10% |
| Prooton | 30% | 10% | 10% |
| PCAF | yellow | ||
IV. Pikklaine 10.7 cm kiirgus
Vaadeldud 18 Mar 178 Prognoositud 19 Mar-21 Mar 180/175/175 90 päeva keskmine 18 Mar 214
V. Geomagneetiline A-indeks
Vaadeldud Afr/Ap 17 Mar 002/004 Hinnanguline Afr/Ap 18 Mar 015/012 Prognoositud Afr/Ap 19 Mar-21 Mar 020/020-020/020-015/015
VI. Geomagnetilised aktiivsuse tõenäosused 19 Mar kuni 21 Mar
| A. Keskmistel laiuskraadidel | |||
|---|---|---|---|
| Aktiivne | 35% | 35% | 30% |
| Väike torm | 25% | 25% | 20% |
| Suur-tõsine torm | 10% | 10% | 05% |
| B. Kõrgetel laiuskraadidel | |||
|---|---|---|---|
| Aktiivne | 35% | 35% | 30% |
| Väike torm | 25% | 25% | 20% |
| Suur-tõsine torm | 15% | 15% | 10% |
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