Reuters: Science News: Fukushima quake, tsunami disturbed upper atmosphere: NASA

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Fukushima quake, tsunami disturbed upper atmosphere: NASA May 30th 2012, 19:33 WASHINGTON | Wed May 30, 2012 3:33pm EDT WASHINGTON (Reuters) - The massive earthquake and tsunami that hit Fukushima, Japan, last year wreaked havoc in the skies above as well, disturbing electrons in the upper atmosphere, NASA reported. The waves of energy from the quake and tsunami that were so destructive on the ground reached into the ionosphere, a part of the upper atmosphere that stretches from about 50 to 500 miles above Earth's surface. The ionosphere is the last, thinnest part of the atmosphere, where solar ultraviolet radiation breaks up molecules and leaves a haze of electrons and ions. In images released on Friday, NASA showed how the earthly disturbances from the March 11, 2011, quake and tsunami were echoed in the movement of electrons far aloft. This movement was monitored by tracking the GPS signals between satellites and ground receivers. Scientists have seen this phenomenon before, for tsunamis in Samoa in 2009 and Chile in 2010. The Japanese event, however, occurred in a region more closely monitored by a dense network of GPS receivers, NASA said in a statement. Still images of the disturbance are online here. Video is available here (Reporting by Deborah Zabarenko; Editing by Doina Chiacu) Link this Share this Digg this Email Reprints

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