EFE | Washington

Earthquakes triggered by man-made practices have risen sharply in the United States since 2009, especially in the central part of the country, prompting the U.S. Geological Survey to outline a preliminary set of models to forecast the frequency and severity of future temblors.

Oklahoma has been the state hardest hit by the increased rates of magnitude-3 or higher quakes blamed on industrial operations that dispose of wastewater by injecting it into deep wells, followed by Texas, Kansas, Colorado, New Mexico and Ohio, the USGS said in a newly released study.

Earthquakes triggered by man-made practices have risen sharply in the United States since 2009, especially in the central part of the country, prompti
Earthquakes triggered by man-made practices have risen sharply in the United States since 2009, especially in the central part of the country, prompting the U.S. Geological Survey to outline a preliminary set of models to forecast the frequency and severity of future temblors. EFE/File
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