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Saturday, March 11, 2017

Seismic security

USGS FINALLY ADMITS THAT FRACKING CAUSES EARTHQUAKES


USGS Finally Admits That Fracking Causes EarthquakesIt has taken years to finally admit it, but the U.S. Geological Survey has just confirmed that three million Americans are at risk from human-induced earthquakes caused by wastewater disposal, a process in fracking, in 2017.
The study was focused on the U.S. Central East, primarily on Oklahoma and Kansas, who don’t normally get large earthquakes. Due to wastewater disposal however, their risk is now equal to that of California.
“Between 1980 and 2000, Oklahoma averaged about two earthquakes greater than or equal to magnitude 2.7 per year. However, this number jumped to about 2,500 in 2014, 4,000 in 2015 and 2,500 in 2016. The decline in 2016 may be due in part to injection restrictions implemented by the state officials. Of the earthquakes last year, 21 were greater than magnitude 4.0 and three were greater than magnitude 5.0,” the USGS said.
The report concluded that wastewater disposal from fracking is triggering larger quakes, and the drop of larger quakes is due to restrictions on fracking.

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