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Local scientists try to ascertain the cause of a series of worsening quakes in Reno, Nevada. Is the city on the verge of a major disaster?
At the same time, Blewitt’s GPS instruments on top of Slide Mountain showed that the mountain had moved six millimeters horizontally outward from the quakes’ epicenter and eight millimeters upward. The movement was too large to have been caused solely by the earthquakes. “In that range of magnitude, the earthquakes are so small that even with 1,600 events, you wouldn’t expect to see anything more than a millimeter of movement on the surface,” Blewitt said.
It had to be something else that was creating the earthquakes and also causing the mountain to move.