Thursday, December 13, 2012

Freak 'Meteotsunamis' Can Strike On a Sunny Day


SAN FRANCISCO — A freak wave killed seven people in Chicago on a sunny day on the shore of Lake Michigan nearly 60 years ago.

At the time, no one knew what set off the monster wave.

Researchers now know the wave was a pressure-driven tsunami, stirred up by storms passing earlier in the day, said Chin Wu, an engineering professor at the University of Wisconsin, Madison, at last week's annual meeting of the American Geophysical Union.

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