Conclusive evidence points in the direction that fracking causes earthquakes. All the regions on earth where fracking takes place have been subject to seismic activity.
Earthquakes taking place many miles away from fracking sites can trigger seismic tremors in the regions. In fracking, fluids are injected into the earth and these can cause geological disturbances. According to Mother Jones, there is solid evidence for this. Three major earthquakes were investigated. These include: the Tohuku-oki in Japan, the Maule in Chile and the Sumatra in Indonesia. Almost 2 years after these occurred several smaller earthquakes were activated in the US where fracking operations had taken place. The fluids pumped underground in fracking act as a pressure cushion. They allow the fault lines to slide easily. The news does not come as somewhat of a shock. It has been common knowledge that places where there is an excess of subterranean fluid pressure (Yellowstone National Park comes to mind) show such seismic signs.
Underground operations where fluid is injected into a fault line are thus responsible for tremors. The only difference is that until now it was believed to be so in case of places where fluid pressures are naturally high. Now we know that it also goes for places where fluid pressures are artificially high. This is the first time such a link has been discovered between man-made changes and geological reactions. Mankind will have to be very careful since his activities are having a dire effect on the environment. From climate change to pollution of every sort, the times are indeed changing. And when you add fracking to the list, you find a whole new aspect of the deleterious consequences of man’s interference in Nature.
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