Just in case that you missed this post: "Study raises new concern about #earthquakes and #fracking fluids: Powerful earthquakes thousands of miles away can trigger swarms of minor #quakes near wastewater-injection wells like those used in #oil and #gas recovery, #scientists reported on Thursday, sometimes followed months later by quakes big enough to destroy buildings...For instance, #seismic waves from an 8.8 quake in Maule, #Chile, in February 2010 rippled across the #planet & triggered a 4.1 quake in Prague, #Oklahoma - site of the Wilzetta oil field - some 16 hours later. Followed by months of smaller tremors in Oklahoma, & then largest quake yet associated with wastewater injection, a 5.7 temblor in Prague on November 6, 2011.That quake destroyed 14 homes, buckled a highway & injured 2 people. Prague quake is "not only one of the largest earthquakes to be associated with #wastewater disposal, but also one of the largest linked to a remote triggering event," said van der Elst.The Chile quake also caused a swarm of small temblors in Trinidad, #Colorado, near wells where wastewater used to extract #methane from #coal beds had been injected.On August 22, 2011, a magnitude 5.3 quake hit Trinidad, damaging dozens of buildings.The 9.1 earthquake in #Japan in March 2011, which caused a devastating #tsunami, triggered a swarm of small quakes in Snyder, #Texas - site of the Cogdell oil field. That autumn, Snyder experienced a 4.5 quake." mobile.reuters/article/idUSBRE96A0TZ20130712?irpc=932
Posted on: Wed, 31 Jul 2013 19:02:05 +0000
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