Wednesday, February 23, 2011

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solar storms

Storms Solar: An inevitable danger

News editorial, published on February 22, 2011 Maxisciences.

Tempêtes solaires : un danger inéluctable (Crédit photo : Nasa)
Solar Storms: An inevitable danger (Credit: NASA)

According to American astronomers, the sun's natural cycle should result in one to two years of powerful solar storms that can cause lasting dysfunctions of our communication satellites, which depend critically almost all our activities.

Collected by the American Association for the Advancement of Science, the remarks of some astronomers are not reassuring. According to them, the last peak of solar activity cycle - an average of about 11 years - dating back to 2001. The current year or the next should experience significant solar flares, potentially dangerous to our phones, our GPS, our computers, likely to nail the ground planes lack of navigation systems, and causing power cuts very important. The phenomenon

releases first waves of X-ray and UV reaching the Earth in minutes, disrupting radio signals and damaging the electronics of satellites. They are followed, at 10 or 20 minutes apart, by an emission of energetic particles even more destructive, then 15 to 30 hours later by the plasma collides with the Earth's magnetic field, causing the aurora borealis, but especially interruptions on power lines.

"It's not a question of 'what if ...?' it's just a question of 'when? " and 'how much?'. The last time we had a maximum in the solar cycle, about 10 years ago, the world was very different. Mobile phones are now ubiquitous. Many things we take for granted today are so much dependent on the 'weather' space before! ", warns Jane Lubchenco, the U.S. administration responsible for oceanic and atmospheric issues.

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