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A new scientific group focused on studying induced seismicity has been formed. There probably are six to 10 researchers working on the issue, with about four or five working full time now, according to Williams.
“This group, along with others from academia, have published a number of papers — eight or so papers in the last couple of years in peer review journals — that point toward water in disposal wells injected deep under ground as contributing to the cause of earthquakes in Oklahoma.”
A USGS statement released in May, in collaboration with the Oklahoma Geological Survey, indicated the likelihood of injection wells contributing to the seismicity and noted a higher chance of earthquakes, Williams said.
“Because, the more small earthquakes you have generally leads to the occurrence of more large earthquakes,” he said. “So the possibility of a damaging earthquake is higher in the last couple years.”
originally posted by: BELIEVERpriest
a reply to: Rezlooper
As you said, the sudden rise in quakes started in 2009, yet the fracting didnt start til 2012. Im sure the fracting has some effect, but it does seem to me that earthquakes are on a rise. I think the earth is inflating as the poles absorb solar ions. The increase in solar activity does seem to parallel the seismic activity.
originally posted by: TrueAmerican
My view is that the quakes are probably just shallow, incidental rock adjustments to the natural motion of the North American Plate moving southwest. Over time this creates localized stresses, sometimes in one spot, and sometimes over wider areas, that get released as quakes. This has happened many times before in different areas that previously had no quakes. Reno, as an example.
originally posted by: lostbook
a reply to: Rezlooper
Haven't heard from you in a while, Rezlooper. Nice to see that you're still around. Yes, the increase in Earthquakes is alarming, however, I believe that this would happen with or without Fracking. Even though the fricking-Fracking doesn't help, I believe that Fracking only serves to speed--up the process.
Tectonic plates are able to move because the Earth's lithosphere has greater strength than the underlying asthenosphere. Lateral density variations in the mantle result in convection. Plate movement is thought to be driven by a combination of the motion of the seafloor away from the spreading ridge (due to variations in topography and density of the crust, which result in differences in gravitational forces) and drag, with downward suction, at the subduction zones. Another explanation lies in the different forces generated by the rotation of the globe and the tidal forces of the Sun and Moon. The relative importance of each of these factors and their relationship to each other is unclear, and still the subject of much debate.
As of 2012, there are an estimated 11,000 private and commercial injection and disposal wells in Oklahoma. Each year those wells are injected with billions of gallons of oil and gas wastewater, according to the Oklahoma Corporation Commission -- 8.8 billion gallons of wastewater in the last two years. The Corporation Commission says they have not tallied the amount of water injected through private wells.
Oklahoma has seen a sharp rise in the number of earthquakes in the last few years. In August 2011, the Oklahoma Geological Survey examined a cluster of earthquakes in Oklahoma and found "that shortly after hydraulic fracturing began small earthquakes started occurring, and more than 50 were identified, of which 43 were large enough to be located. Most of these earthquakes occurred within a 24 hour period after hydraulic fracturing operations had ceased."