Why is "2009–15 Oklahoma earthquake swarms" trending?
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- Date: 2026-04-07 07:47:34
This topic has appeared in the trending rankings 1 time(s) in the past year. While it does not trend frequently, its appearance suggests a renewed or concentrated surge of public interest.
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Wikipedia Overview
The Oklahoma earthquake swarms are an ongoing series of human activity-induced earthquakes affecting central Oklahoma southern Kansas, northern Texas since 2009. Beginning in 2009, the frequency of earthquakes in the U.S. state of Oklahoma rapidly increased from an average of fewer than two 3.0+ magnitude earthquakes per year since 1978 to hundreds each year in the 2014–17 period. Thousands of earthquakes have occurred in Oklahoma and surrounding areas in southern Kansas and North Texas since 2009. Scientific studies attribute the rise in earthquakes to the disposal of wastewater produced during oil extraction that has been injected more deeply into the ground. Two most notable cases include water injection, geothermal-induced earthquakes in areas previously without any seismic activity - in Pohang, South Korea and St. Gallen, Switzerland.
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