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5 January 2017
The earth shakes similarly after earthquakes and underground explosions, making it hard to distinguish between the two types of rumbling events. A new study aims to capture the subtle details of seismic signatures and ground deformation after an explosion to help scientists better differentiate between them.
15 November 2016
Geophysicists have compiled the most detailed maps yet of the geologic forces controlling the locations, types and magnitudes of earthquakes in Texas and Oklahoma. These new “stress maps” provide insight into the nature of the faults associated with recent temblors, many of which appear to have been triggered by the injection of wastewater deep underground.
29 August 2016
A handful of faults lining the border of California and Nevada may be near the point of rupture, according to a new study assessing earthquakes in the region as far back as 1,400 years ago. Scientists report that earthquakes in a fault network east of the Sierra Nevada Mountains are not random, but are likely triggered from stress bestowed by past earthquakes. This same type of stress has built up in six faults near Death Valley, California, and Reno, Nevada, according to the new research.
3 May 2016
The southeastern United States should has seen some notable seismic events – most recently, the 2011 magnitude-5.8 earthquake near Mineral, Virginia that shook the nation’s capital. Now, scientists report in a new study a likely explanation for this unusual activity: pieces of the mantle under this region have been periodically breaking off and sinking down into the Earth.
13 April 2016
Analysis of a series of earthquakes in East Texas in 2012 has found it plausible that the earthquakes were caused by wastewater injection. Previous studies relied on the timing and proximity of wastewater injection to earthquakes to decide if earthquakes were induced by human activity. This was the first to simulate the mechanics of an earthquake generated by water injection for this site.
1 December 2015
The eastern Mediterranean is more seismically active than previously assumed, a new study finds. On a geological time scale, seismic activity around the island of Crete has generated large earthquakes in bursts, potentially increasing the future risk for earthquakes and tsunamis in the region.
17 September 2014
A new study was published today in the Bulletin of the Seismological Society of America, by three USGS scientists, and it’s the latest in a growing number of scientific studies that show that deep injection of waste water during fracking is causing earthquakes. It seems pretty likely that a quake will do damage in a fracking zone soon, and all this science will be moved into a courtroom. The graph …
26 August 2014
Meteorologists in general do not know much about Geology, but broadcast mets are usually the first person newsroom producers (and the public) turn to when there is an earthquake, tsunami, meteor showers etc. I had a couple of great courses in Geology working on my masters, and a field trip to the Washington State was a fantastic learning experience, and it left me with a lifelong fascination of rocks and …