Energy Production Causes Big US Earthquakes
ananyo writes "Natural-gas extraction, geothermal-energy production and other activities that inject fluid underground have caused numerous earthquakes in the United States, scientists have reported in a trio of papers in Science (abstracts here, here and here). Most of these quakes have been small, but some have exceeded magnitude 5.0. They include a magnitude-5.6 event that hit Oklahoma on 6 November 2011, damaging 14 homes and injuring two people."
Time and time again on Slashdot, we've had extraction engineers that work on this say it's completely safe and anyone who says otherwise is fear mongering!
;-)
Clearly these ivory tower scientists are just confused old men because the natural gas companies have absolutely no motive to try to silence this kind of stuff
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You can prevent large earthquakes by making lots of small ones, or by "lubricating" the fault with water.
FICTION: Seismologists have observed that for every magnitude 6 earthquake there are about 10 of magnitude 5, 100 of magnitude 4, 1,000 of magnitude 3, and so forth as the events get smaller and smaller. This sounds like a lot of small earthquakes, but there are never enough small ones to eliminate the occasional large event. It would take 32 magnitude 5's, 1000 magnitude 4's, OR 32,000 magnitude 3's to equal the energy of one magnitude 6 event. So, even though we always record many more small events than large ones, there are far too few to eliminate the need for the occasional large earthquake. As for "lubricating" faults with water or some other substance, if anything, this would have the opposite effect. Injecting high- pressure fluids deep into the ground is known to be able to trigger earthquakes—to cause them to occur sooner than would have been the case without the injection. This would be a dangerous pursuit in any populated area, as one might trigger a damaging earthquake.
The University of Oklahoma (home of one of the top Petroleum Engineering departments in the country, and recipient of much oil money), geology department has released statements disagreeing. Why aren't you reporting the "controversy" rather than the science? How incredibly biased!
In fact, just a few months ago, one their Geological researchers released a peer reviewed study that showed ... let's see here ... uh... that fracking is causing earthquakes.
Damn. Wait! I know there's a controversy to report here somewhere. Lemme look....ah, here it is:
Oklahoma’s official seismologist — the Geological Survey’s Austin Holland — is skeptical of the link between injection wells an earthquakes, a view shared by the Corporation Commission and the Oklahoma Independent Petroleum Association, a trade group that lobbies for the interests of oil and gas producers. More data is needed, Holland says.
See, this is actually a controversy! You just have to go to sources that aren't as familiar with the actual data, and/or are in the pockets of the folks doing the fracking. Why isn't this controversy being fairly reported?