News tagged with earthquake activity

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A global murmur, then unusual silence

In the global aftershock zone that followed the major April 2012 Indian Ocean earthquake, seismologists noticed an unusual pattern. The magnitude (M) 8.6 earthquake, a strike-slip event at intraoceanic tectonic plates, caused ...

Apr 19, 2013
4.4 / 5 (5) 2

Trial opens against scientists for Italy quake

Seven scientists and other experts went on trial on manslaughter charges Tuesday for allegedly failing to sufficiently warn residents before a devastating earthquake that killed more than 300 people in central ...

Sep 20, 2011
5 / 5 (4) 10

Earthquakes: Water as a lubricant

Geophysicists from Potsdam (Germany) have established a mode of action that can explain the irregular distribution of strong earthquakes at the San Andreas Fault in California. As the science magazine Nature reports in its ...

Nov 30, 2011
4.8 / 5 (4) 1 | with audio podcast

Erosion may trigger earthquakes

Researchers from laboratories at Géosciences Rennes (CNRS/Université de Rennes 1), Géosciences Montpellier (CNRS/Université de Montpellier 2) and Institut de Physique du Globe de Paris (CNRS/IPGP/Université Paris Diderot), ...

Nov 21, 2014
5 / 5 (3) 0

Earthquake waves: How do they spread?

Propagation of earthquake waves within the Earth is not uniform. Experiments indicate that the velocity of shear waves (s-waves) in Earth’s lower mantle between 660 and 2900 km depth is strongly dependent on the orientation ...

Apr 13, 2009
3.7 / 5 (3) 0