Interesting news about scientists discovering a connection between tornadoes and seismic activity.

Watts Up With That?

From Indiana University

Scientists detect seismic signals from tornado

BLOOMINGTON, Ind. β€” An Indiana University geophysical experiment detected unusual seismic signals associated with tornadoes that struck regions across the Midwest last week β€” information that may have value for meteorologists studying the atmospheric activity that precedes tornado disasters.

The experiment by IU researchers involves deployment of more than 100 state-of-the-art digital seismographs in a broad swath of the U.S. midcontinent. One of the twisters that struck southeastern Missouri and southern Illinois on Feb. 29 passed through the seismic detection array.

β€œIn examining the seismograms, we recorded unusual seismic signals on three of our stations in southern Illinois,” said Michael Hamburger, professor in the department of geological sciences at IU Bloomington and one of the researchers conducting the experiment.

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