Research suggests hydraulic fracking can cause earthquakes in at least two ways — and one of them can cause tremors months after the activity stops.
“The seismicity is persistent after the operations are completed,” said David Eaton, a University of Calgary seismologist, whose paper has been published in the journal Science.
Eaton has been studying earthquakes that have shaken the Fox Creek region of northwestern Alberta for years.
Bob Weber – Canadian Press – Toronto Star, November 17, 2016.
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