Seismologists say the largest earthquake in Oklahoma state history, which struck Pawnee County earlier this month, occurred along a known fault line. But a series of aftershocks along a different line that intersects with the quake’s epicenter indicates that a new fault has opened up.
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Drop in Injection Volumes Seen as Main Reason For Decrease in Oklahoma Quakes
The number of large earthquakes to rattle Oklahoma has declined so far this year, but experts aren’t sure how much of the decline should be attributed to actions taken by state regulators, operators, a drop in wastewater injection, or a combination of all of those factors.
July 5, 2016
Data Indicates Fewer Small Earthquakes in Oklahoma in Second Half of 2015
Actions taken by the Oklahoma Corporation Commission (OCC) to mitigate earthquakes, coupled with a possible decline in the state’s oil and gas production for 2015, may have contributed to a slight decline in the number of small temblors to hit Oklahoma during the second half of the year, according to the Oklahoma Geological Survey (OGS).
January 5, 2016