Fracking-linked earthquakes likely to worsen – seismologists

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Ongoing hydraulic fracking operations will only exacerbate seismic activity, leading to heightened earthquakes in areas where wastewater is injected deep underground, according to new research.To unleash natural gas, hydraulic fracturing – or fracking – requires large volumes of water, sand, and chemicals to be pumped underground. Scientists attending the Seismological Society of America (SSA) annual meeting said Thursday that this storage of wastewater in wells deep below the earth’s surface, in addition to fracking’s other processes, is changing the stress on existing faults, which could mean more frequent and larger quakes in the future.Researchers previously believed quakes that resulted from fracking could not exceed a magnitude of 5.0, though stronger seismic events were recorded in 2011 around two heavily drilled areas in Colorado and Oklahoma.

For full report read …… http://rt.com/usa/156288-fracking-earthquake-links-gas/

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