Fracking causing earthquakes in the USA

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United States Geological Survey map highlights earthquake risk zones. Blue boxes indicate areas of high activity of human-caused earthquake due to deep bore fluid injection. Credit: USGSFrom Tufts University in the USA:

Fracking: Earthquakes are triggered well beyond fluid injection zones

Computer model and field experiment data suggest a new link between subsurface injections and earthquake swarms

May 2, 2019

Summary: Using data from field experiments and computer modeling of ground faults, researchers have discovered that the practice of subsurface fluid injection used in ‘fracking‘ and wastewater disposal for oil and gas exploration could cause significant, rapidly spreading earthquake activity beyond the fluid diffusion zone. The results account for the observation that the frequency of man-made earthquakes in some regions of the country surpass natural earthquake hotspots.

Using data from field experiments and modeling of ground faults, researchers at Tufts University have discovered that the practice of subsurface fluid injection used in ‘fracking‘ and wastewater disposal for oil and gas exploration could cause significant, rapidly spreading earthquake activity beyond the…

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