PSN-L Email List Message

Subject: Spacequakes
From: Mark Robinson mark.robinson@...............
Date: Wed, 28 Jul 2010 23:54:05 +1200


http://science.nasa.gov/science-news/science-at-nasa/2010/27jul_spacequakes/

> Rumbles without sound
> Auroras rain down
> Magnetic fields shake
> Beware the spacequake
>
> July 27, 2010:  Researchers using NASA's fleet of five THEMIS spacecraft have discovered a form of space weather that packs the punch of an earthquake and plays a key role in sparking bright Northern Lights. They call it "the spacequake."
>
>  A spacequake is a temblor in Earth's magnetic field. It is felt most strongly in Earth orbit, but is not exclusive to space. The effects can reach all the way down to the surface of Earth itself.
>
> "Magnetic reverberations have been detected at ground stations all around the globe, much like seismic detectors measure a large earthquake," says THEMIS principal investigator Vassilis Angelopoulos of UCLA.
> ...
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