Affichage des archives de lundi, 1 mars 1999
Rapport d'activité solaire
Chaque éruption solaire mentionnée dans ce rapport a été ajustée selon un facteur d'échelle fourni par le Space Weather Prediction Center (SWPC). Ce facteur a conduit à une sous-estimation de 42% des éruptions solaires par rapport aux données de qualité scientifique. Nous avons supprimé ce facteur d'échelle de nos données archivées pour refléter les véritables unités physiques.
Rapport d'activité solaire et géophysique 1999 Mar 01 2200 UTCFait par le NOAA © SWPC et adapté par SpaceWeatherLive.com
Rapport de l'USAF/NOAA sur l'activité solaire et géophysique
SDF numéro 060 publié à 2200Z le 01 MAR 1999IA. Analyse des régions solaires actives et activité du 28-2100Z au 01-2100Z SOLAR ACTIVITY RETURNED TO LOW LEVELS. REGION 8471
(N28W26) PRODUCED SEVERAL LOW LEVEL C-CLASS SUBFLARES. ON 28 FEB,
PRIOR TO THE M6/2B, THIS REGION DEVELOPED A DELTA MAGNETIC
CLASSIFICATION OF MODERATE STRENGTH. IN THE INTERIM, THIS DELTA
FADED AND OVERALL THE REGION DECAYED SLIGHTLY IN PENUMBRAL COVERAGE.
THE MAIN NEUTRAL LINE IN THIS REGION WAS ALMOST LINEAR SUGGESTING
MAGNETIC SHEAR AT THAT LOCATION, BUT VECTOR MAGNETOGRAPH DATA WERE
NOT AVAILABLE TO CONFIRM THIS SUPPOSITION. REGION 8475 (N32E16)
EXHIBITED GROWTH AND PRODUCED SEVERAL SUBFLARES. A DELTA MAGNETIC
CONFIGURATION MAY BE FORMING IN THIS REGION. TWO SMALL AREAS OF
PLAGE AND SPOTS EMERGED NEAR S15W07. THERE WERE NUMBERED AS NEW
REGION 8478. THIS AREA MAY BE SPLIT INTO TWO SEPARATE REGIONS IN THE
NEAR FUTURE.
IB. Prévisions d'activité solaire
SOLAR ACTIVITY SHOULD BECOME LOW TO
MODERATE. REGION 8471 REMAINS CAPABLE OF PRODUCING AN ISOLATED
M-CLASS EVENT BUT FLARE FREQUENCY SHOULD DECREASE AS DECAY
CONTINUES. REGION 8475 SHOULD BEGIN TO PRODUCE FREQUENT C-CLASS
EVENTS AND ISOLATED M-CLASS EVENTS SHOULD GROWTH AND INCREASING
MAGNETIC COMPLEXITY CONTINUE.
IIA. Résumé de l'activité géophysique du 28-2100Z au 01-2100Z
THE GEOMAGNETIC FIELD RANGED FROM UNSETTLED TO MINOR STORM LEVELS.
THE MOST DISTURBED PERIODS WERE 01/0000-0600Z AND 01/1200-1800Z.
SOLAR WIND DATA SHOWED A LOW SPEED, HIGH DENSITY FLOW WITH NORTHWARD
BZ DURING THE DISTURBANCE. IT IS POSSIBLE THIS DISTURBANCE WAS
RELATED TO A FILAMENT DISRUPTION IN THE SOUTHEAST QUADRANT ON 24-25
FEB. AT THE END OF THE PERIOD, SOLAR WIND VELOCITY WAS INCREASING
AND DENSITY WAS DECREASING.
IIB. Prévision de l'activité géophysique
THE GEOMAGNETIC FIELD SHOULD BE
PREDOMINANTLY QUIET TO UNSETTLED FOR THE NEXT THREE DAYS. ISOLATED
ACTIVE CONDITIONS ARE POSSIBLE DURING THAT TIME. A SMALL CORONAL
HOLE SHOULD BEGIN TO AFFECT THE EARTH'S FIELD ON 02-03 MAR.
III. Probabilité d'éruption solaire du 02 MAR au 04 MAR
| Classe M | 50% | 40% | 40% |
| Classe X | 10% | 10% | 10% |
| Proton | 05% | 05% | 05% |
| PCAF | GREEN | ||
IV. Flux Penticton 10.7 cm
Observé 01 MAR 120 Prévisionnel 02 MAR-04 MAR 120/120/118 Moyenne des 90 derniers jours 01 MAR 144
V. Indice géomagnetique A
OBSERVED AFR/AP 28 FEB 010/014 ESTIMATED AFR/AP 01 MAR 024/025 PREDICTED AFR/AP 02 MAR-04 MAR 015/015-012/012-012/010
VI. Probabilités d'activité géomagnétique du 02 MAR au 04 MAR
| A. Latitudes moyennes | |||
|---|---|---|---|
| Actif | 20% | 20% | 20% |
| Tempête mineure | 10% | 10% | 10% |
| Tempête majeure/sévère | 05% | 05% | 05% |
| B. Hautes latitudes | |||
|---|---|---|---|
| Actif | 25% | 20% | 20% |
| Tempête mineure | 10% | 10% | 10% |
| Tempête majeure/sévère | 05% | 05% | 05% |
Toutes les heures sont indiquées en UTC
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