PASADENA, Calif. — New earthquake hazard maps signal a watershed moment: They show that fracking's byproducts are clearly to blame for swarms of earthquakes plaguing several states.
The maps highlight 17 hotspots where communities face a significantly increased risk of earthquakes, and the accompanying report links the earthquakes to wastewater injection wells. Previous maps did not include earthquakes that are induced by human activities.
"We consider induced seismicity to be primarily triggered by the disposal of wastewater into deep wells," said Mark Petersen, chief of the National Seismic Hazard Project for the U.S. Geological Survey, which released the maps on April 23 Read more...
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