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http://www.livescience.com/strangenews/080416-earth-hum.html
"This discovery should force researchers to significantly rethink what causes Earth's hum. While the spheroidal oscillations might be caused by forces squeezing down on the planet — say, pressure from ocean or atmospheric waves — the twisting ring-like phenomena might be caused by forces shearing across the world's surface, from the oceans, atmosphere or possibly even the sun.
Future investigations of this part of the hum will prove challenging, as "this is a very small signal that is hard to measure, and the excitation is probably due to multiple interactions in a complex system," said researcher Rudolf Widmer-Schnidrig, a geoscientist at the University of Stuttgart, Germany.
Still, a better understanding of this sound will shed light on how the land, sea and air all interact, he added.
Researcher Dieter Kurrle and Widmer-Schnidrig detailed their findings March 20 in the journal Geophysical Research Letters. "
Att det här fenomenet skulle vara förknippat med en okänd planet i vårt solsystem (Nibiru) är extremt långsökt...
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