The arrival of man-made earthquakes.

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Your Sunday Stumbles Letter from Oklahoma APRIL 13, 2015 ISSUE Weather Underground The arrival of man-made earthquakes. BY RIVKA GALCHEN The increased seismicity is likely due to changes in the way oil and gas are produced.CREDITILLUSTRATION BY SHOUT In the fall of 2011, students in Katie Keranen’s seismology course at the University of Oklahoma buried portable seismograph stations around the campus, in anticipation of a football game between the Sooners and the Texas A. & M. Aggies. The plan was to see if the students could, by reading the instruments, detect the rumble of eighty-two thousand fans cheering for a touchdown. “To see if they can figure out if a signal is a passing train or a cheering crowd—that’s much more interesting for them than discussing data in theory,” Keranen, an assistant professor of geophysics, told me. But at 2:12 A.M. on November 5th, the day of the game, people in seventeen states felt an earthquake of 4.8 magnitude, centered near Prague, Oklahoma, a town of roughly twenty-five hundred, which is about an hour’s drive from Norman, where O.U. is situated. The students quickly packed up the seismographs and headed to Prague, hoping to measure the aftershocks. “Obviously, this was more worthwhile than a game,” Keranen said. Top Stumble How to Make an Earthquake Geoscience  | 20,552 Views View Page

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