Geologists may be close to cracking one of the biggest seismological mysteries in the Pacific Northwest: the origin of a powerful earthquake that rattled seven states and provinces when Ulysses S. Grant was president.
Earth Sciences
Nov 27, 2014
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Man-made earthquakes, a side effect of some high-tech energy drilling, cause less shaking and in general are about 16 times weaker than natural earthquakes with the same magnitude, a new U.S. study found.
Earth Sciences
Aug 19, 2014
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If a monster earthquake struck off Alaska's coast, tsunami waves would rush toward California, crippling the nation's busiest port complex and flooding coastal communities, a report released Wednesday suggests.
Environment
Sep 4, 2013
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Monitoring slow earthquakes may provide a basis for reliable prediction in areas where slow quakes trigger normal earthquakes, according to Penn State geoscientists.
Earth Sciences
Aug 15, 2013
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A new study in the journal Geology is the latest to tie a string of unusual earthquakes, in this case, in central Oklahoma, to the injection of wastewater deep underground. Researchers now say that the magnitude 5.7 earthquake ...
Earth Sciences
Mar 26, 2013
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It's known that large quakes trigger smaller quakes hours later as the strong seismic waves pass through the Earth. USGS and UC Berkeley seismologists have now shown that at least some large quakes – strike-slip as opposed ...
Earth Sciences
Sep 26, 2012
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(Phys.org)—Three of the largest and deadliest earthquakes in recent history occurred where earthquake hazard maps didn't predict massive quakes. A University of Missouri scientist and his colleagues recently studied the ...
Earth Sciences
Aug 31, 2012
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Most earthquakes in the Barnett Shale region of north Texas occur within a few miles of one or more injection wells used to dispose of wastes associated with petroleum production such as hydraulic fracturing fluids, according ...
Earth Sciences
Aug 6, 2012
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Beth Arcos picked her way through muck and pickleweed just west of the Bremerton waterfront, on the trail of an ancient earthquake and tsunami.
Earth Sciences
Jul 16, 2012
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Certain oil and gas operations that involve injecting wastewater underground can cause earthquakes, but the risk from hydraulic fracturing is generally low, said a US scientific report Friday.
Environment
Jun 15, 2012
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