Outils Scientifiques Recherches
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Welcome to the USGS - U.S. Geological Survey
Earthquakes View our calendar of events or download the PDF version .
AERIS - Outils - Recherche de références bibliographiques
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NOTE : Mouse over wavelengths to change preview pictures. FITS For Planning Purposes Only (Right click and select "Save/Download Link..."): 4500 , 1700 , 1600 , 335 , 304 , 211 , 193 , 171 , 131 , 94 , Blos
The Sun Today
Solar activity remains very low with only B-Class X-Ray activity detected mostly around Sunspot 1450 and region 1451.
Le blog de suivi-soleil.over-blog.com -
www.SolarMonitor.org
Note: The tabulated data are based on the most recent NOAA/USAF Active Region Summary issued on some time, the values to the right of the forward slashes representing yesterdays values or events.
Solar and Heliospheric Observatory Homepage
Comet Lovejoy came into LASCO's view on Dec. 14 as a bright, white streak, skimmed across the Sun's edge about 140,000 km above the surface late Dec. 15 and early Dec. 16, 2011, furiously brightening and vaporizing as it approached the Sun...Our solar system is composed of the Sun and all things which orbit around it: the Earth, the other eight planets, asteroids, and comets.
SOHO
Remarque : l’observatoire AuroraMAX n’est pas en activité de mai à la mi-août puisque le soleil de minuit dans le Nord du Canada nous empêche de voir la plupart des aurores durant les mois d’été.
ASC - Projet AuroraMAX - Diffusion en direct des aurores boréales qui se forment au dessus de la ville de Yellowknife
Selected Figures from the SEM
07 Mar 2012 (DOY 067 0002 UT) X5.4 x-ray flare in AR1429 with a 3B optical flare at N17E27, leading to a shock 35 hours later on 08 Mar 2012 (DOY 068) at 1053 UT. 19 Jan 2012 (DOY 019 1344 UT) M3.2 x-ray flare in AR1402 with an optical flare at N32E22, leading to a shock 64 hours later on 22 Jan 2012 (DOY 022) at 0518 UT. 24 Sep 2011 (DOY 267 1233 UT) M7.1 x-ray flare in AR1302, leading to a shock 47.5 hours later on 26 Sep 2011 (DOY 269) at 1202 UT.INFO FROM SIDC - RWC BELGIUM 28 Apr 2012, 1230UT Solar activity has increased slightly as 7 low C-class flares were observed in the last 24h. More C-class flares can be expected, especially from NOAA AR 1469 (Cat 15 and 16), and there is a slight chance for another M-class event.