News tagged with earthquake activity

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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 ...

dateApr 13, 2009 in Earth Sciences
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7.7-magnitude quake hits off Indonesian island

(AP) -- A powerful earthquake hit off western Indonesia late Monday, briefly triggering a tsunami warning that sent thousands of panicked residents fleeing to high ground. There were no immediate reports of damage or injuries.

dateOct 25, 2010 in Earth Sciences
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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 ...

dateNov 30, 2011 in Earth Sciences
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Are large earthquakes linked across the globe?

The past decade has been plagued with what seems to be a cluster of large earthquakes, with massive quakes striking Sumatra, Chile, Haiti and Japan since 2004. Some researchers have suggested that this cluster has occurred ...

dateAug 02, 2012 in Earth Sciences
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A seismograph for ancient earthquakes

Earthquakes are one of the world's biggest enigmas -- impossible to predict and able to wreak untold damage within seconds. Now, a new tool from Tel Aviv University may be able to learn from earthquakes of the ancient past ...

dateMar 14, 2011 in Earth Sciences
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