Vaata neljapäev, 1 oktoober 1998 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 1998 Oct 01 2200 UTCValminud NOAA © SWPC ja töödeldud SpaceWeatherLive.com-iga
Ühine USAF / NOAA päikese- ja geofüüsikaalase aktiivsuse aruanne
SDF number 274 Välja antud 2200Z kuni 01 OCT 1998IA. Päikese aktiivsete piirkondade ja päikeseaktiivsuse analüüs alates 30-2100Z kuni 01-2100Z SOLAR ACTIVITY BECAME LOW. SMALL C-CLASS EVENTS
OCCURRED. MOST WERE NOT OPTICALLY CORRELATED TO ANY SPECIFIC REGION.
REGION 8349 (S26E29) GREW SLIGHTLY AND PRODUCED SEVERAL SUBFLARES.
THE LOOP PROMINENCE SYSTEM, VISIBLE AFTER THE FLARE ON 30 SEP FROM
REGION 8340 (NOW AT N23W106), FADED DURING THE PERIOD. NEW REGION
8350 (N20E79) ROTATED ONTO THE DISK AS A MODERATE SIZE H CLASS SPOT.
IB. Päikese aktiivsuse ennustus
SOLAR ACTIVITY SHOULD REMAIN AT A LOW
LEVEL. ISOLATED C-CLASS EVENTS ARE POSSIBLE. THERE IS A DIMINISHING
PROBABILITY OF M-CLASS EVENTS FROM DEPARTED REGION 8340.
IIA. Summaarne geofüüsikaline aktiivsus 30-2100Z kuni 01-2100Z
THE GEOMAGNETIC FIELD RANGED FROM MOSTLY UNSETTLED TO MINOR STORM
LEVELS. THE MOST DISTURBED PERIOD WAS 01/0000-0300Z. SOLAR WIND DATA
SHOW A MODERATELY HIGH VELOCITY FLOW IMPACTING THE EARTH. THE
GREATER THAN 10 MEV PROTON FLUX REACHED A MAXIMUM OF 1200 PFU AT
01/0025Z. FLUXES AT THE END OF THE PERIOD WERE BELOW 40 PFU. THE
GREATER THAN 100 MEV PROTON FLUX DROPPED BELOW THE 1 PFU THRESHOLD
AT 30/2235Z. THE POLAR CAP ABSORPTION EVENT CONTINUED BUT DECAYED AS
THE PROTON FLUX DECREASED. ENERGETIC ELECTRON FLUXES WERE HIGH AT
THE BEGINNING OF THE DAY AND DECREASED THROUGH THE PERIOD.
IIB. Geofüüsikalise aktiivsuse ennustus
THE GEOMAGNETIC FIELD SHOULD BE
AT QUIET TO ACTIVE LEVELS ON 02 OCT. IT IS NOW BELIEVED THAT ON
02-03 OCT THE EARTH WILL RECEIVE AN OBLIQUE STRIKE FROM A LARGE CME
ASSOCIATED WITH THE ACTIVITY ON 30 SEP. UNSETTLED TO MINOR STORM
LEVELS ARE POSSIBLE DURING 02-03 OCT WITH ISOLATED MAJOR STORM
PERIODS POSSIBLE AT HIGH LATITUDES. UNSETTLED TO SLIGHTLY ACTIVE
CONDITIONS ARE FORECAST FOR 04 OCT. THE GREATER THAN 10 MEV PROTON
EVENT SHOULD DROP BELOW 10 PFU IN 1-2 DAYS.
III. Sündmuste tõenäosus 02 OCTkuni 04 OCT
| Klass M | 20% | 10% | 10% |
| Klass X | 05% | 01% | 01% |
| Prooton | 10% | 05% | 01% |
| PCAF | IN PROGRESS | ||
IV. Pikklaine 10.7 cm kiirgus
Vaadeldud 01 OCT 119 Prognoositud 02 OCT-04 OCT 115/113/112 90 päeva keskmine 01 OCT 129
V. Geomagneetiline A-indeks
OBSERVED AFR/AP 30 SEP 006/008 ESTIMATED AFR/AP 01 OCT 017/022 PREDICTED AFR/AP 02 OCT-04 OCT 015/020-018/020-012/015
VI. Geomagnetilised aktiivsuse tõenäosused 02 OCT kuni 04 OCT
| A. Keskmistel laiuskraadidel | |||
|---|---|---|---|
| Aktiivne | 20% | 40% | 25% |
| Väike torm | 10% | 15% | 10% |
| Suur-tõsine torm | 05% | 10% | 05% |
| B. Kõrgetel laiuskraadidel | |||
|---|---|---|---|
| Aktiivne | 35% | 35% | 30% |
| Väike torm | 20% | 20% | 15% |
| Suur-tõsine torm | 10% | 10% | 10% |
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