Shakedown in Oklahoma: To cut the number of bigger earthquakes, inject less saltwater

In Oklahoma, reducing the amount of saltwater (highly brackish water produced during oil and gas recovery) pumped into the ground seems to be decreasing the number of small fluid-triggered earthquakes. But a new study shows why it wasn’t enough to ease bigger earthquakes. The study, led by Ryan M. Pollyea of Virginia Tech in Blacksburg, Va., was published online ahead of print in Geology this week.
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