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USGS news release - earthquakes in Oklahoma


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#1 AplusWebMaster

AplusWebMaster

    AplusWebMaster

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Posted 07 May 2014 - 04:56 AM

FYI...

 

- http://www.usgs.gov/...cle.asp?ID=3880
5/5/2014 - "The rate of earthquakes in Oklahoma has increased by about 50 percent since October 2013, significantly increasing the chance for a damaging quake in central Oklahoma... In a new joint statement by the U.S. Geological Survey and Oklahoma Geological Survey, the agencies reported that 183 earthquakes of magnitude 3.0 or greater occurred in Oklahoma from October 2013 through April 14, 2014. This compares with a long-term average from 1978 to 2008 of only two magnitude 3.0 or larger earthquakes per year. As a result of the increased number of small and moderate shocks, the likelihood of future, damaging earthquakes has increased for central and north-central Oklahoma...
The joint statement indicates that a likely contributing factor to the increase in earthquakes is wastewater disposal by injection into deep geologic formations. The water injection can increase underground pressures, lubricate faults and cause earthquakes – a process known as injection-induced seismicity. Much of this wastewater is a byproduct of oil and gas production and is routinely disposed of by injection into wells specifically designed and approved for this purpose. The recent earthquake rate changes are not due to typical, random fluctuations in natural seismicity rates..."
 
... better known as "fracking".
:ph34r: :ph34r:

Edited by AplusWebMaster, 07 May 2014 - 05:31 AM.

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