A solar physicist at NASA says there's no reason to
think that strong solar flares expected in 2013 will disrupt life
on earth, a day after a British official warned they could bring
power and communications systems to a grinding halt.
"Solar flares happen all the time," NASA's Jeffrey
Newmark said from Washington. "The key is, how do we mitigate?"
At a conference earlier this week, British Secretary of Defence
Liam Fox caused a stir by warning that a once-in-a-century solar
flare could bring modern life to a halt by paralyzing power grids
and disabling satellite communications.
Could a solar flare storm in 2013 knock out power
across the globe?
Jeffrey Newmark, a solar physicist at NASA, appears on
CTV's Canada AM on Thursday, Sept. 23, 2010.
Fox said the British government has been working with experts
and private companies to "build collective resilience" against the
effects of a powerful solar flare.
"Much of our critical national infrastructure depends on data
and services delivered from, or through satellites, whose sensitive
electronics are vulnerable to some of the radiation emitted by the
sun," Fox said.
NASA has predicted that a new wave of solar activity will likely
peak around 2013. But the agency maintains that the stronger flares
will be similar to those that earth has experienced as recently as
2002.
Newmark told Canada AM that the sun goes through 11-year cycles
and solar flares are indeed expected to intensify over the next few
years -- but they should be "business as usual."
The planet has experienced a solar cycle "maximum" before, he
said Thursday morning, "and we understand what to expect from the
future."
NASA has a fleet of spacecraft that monitor solar activity so
that the agency can predict the sun's behaviour, Newmark
said.
The space agency also has a warning system in place in the event
of unusually powerful solar flares, he said, that could help
safeguard power grids and satellites.
In 1859, a "super solar flare" knocked out telegraph lines
around the world and lit paper on fire at telegraph offices. In
today's high-tech world, a similar event could cause
billions of dollars in damage, by some estimates.
Newmark acknowledged that our wired societies make them more
vulnerable to solar events.
"However, at the same time the technology we use enables us to
better understand these events, better predict them and enable us
to mitigate them," he said.
Read more: http://www.ctvnews.ca/no-need-to-fear-strong-solar-flares-in-2013-nasa-1.556031#ixzz2Fvql6tmv