For the first time, a natural source of infrasonic waves of Earth has been measured directly from space—450 kilometers above the planet's surface. The source was the massive 2011 Tohoku-Oki earthquake in Japan, and its ...
Earth Sciences
Apr 23, 2015
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84
More than 143 million Americans living in the 48 contiguous states are exposed to potentially damaging ground shaking from earthquakes, with as many as 28 million people likely to experience strong shaking during their lifetime, ...
Earth Sciences
Apr 22, 2015
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77
The "seismic crisis" around the region of the Chiles and Cerro Negro de Mayasquer volcanoes near the Columbia-Ecuador border is likely caused by intruding magma, according to a report by R. Corredor Torres of the Servicio ...
Earth Sciences
Apr 22, 2015
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44
Located in the Marmara Sea, major earthquakes along the North Anatolian Fault (NAF) system have repeatedly struck what is current-day Istanbul and the surrounding region, but determining the recurrence rate has proven difficult ...
Earth Sciences
Mar 30, 2015
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19
The deep injection of wastewater underground is responsible for the dramatic rise in the number of earthquakes in Colorado and New Mexico since 2001, according to a study to be published in the Bulletin of the Seismological ...
Earth Sciences
Sep 15, 2014
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In the global aftershock zone that followed the major April 2012 Indian Ocean earthquake, seismologists noticed an unusual pattern – a dynamic "stress shadow," or period of seismic silence when some faults near failure ...
Earth Sciences
Mar 11, 2014
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New evidence suggests the 1906 earthquake ruptured the San Andreas Fault in a single trace through Portola Village, current day Town of Portola Valley, and indicates a revised location for the fault trace.
Earth Sciences
Aug 2, 2013
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Colombia sits atop a complex geological area where three tectonic plates are interacting, producing seismicity patterns that have puzzled seismologists for years. Now seismologists have identified the "Caldas tear," which ...
Earth Sciences
Jun 6, 2013
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2
The entire world becomes an aftershock zone after a massive magnitude (M) 7 or larger earthquake—but what hazard does this pose around the planet? Researchers are working to extend their earthquake risk estimates over a ...
Earth Sciences
Apr 19, 2013
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Salt Lake Valley, home to the Salt Lake City segment of the Wasatch fault zone and the West Valley fault zone, has been the site of repeated surface-faulting earthquakes (of about magnitude 6.5 to 7). New research trenches ...
Earth Sciences
Apr 17, 2013
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