The giant earthquake that struck Japan this year not only shook the Earth, but also rattled the highest layer of the atmosphere, scientists find.
This research could lead to a new type of early warning system for devastating tsunamis and earthquakes.
The magnitude 9 quake that struck off the coast of Tohoku in Japan in March unleashed a catastrophic tsunami, ushered in what might be the world’s first complex megadisaster and set off microquakes and tremors around the globe.
Past research revealed the surface motions and tsunamis that earthquakes generate can also trigger waves in the atmosphere. These waves can reach all the way to the ionosphere, one of the highest layers of the atmosphere.
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http://www.japantoday.com/category/national/view/march-11-quake-even-rattled-upper-atmosphere