Earthquakes actually aftershocks of 19th century quakes

(PhysOrg.com) -- When small earthquakes shake the central U.S., citizens often fear the rumbles are signs a big earthquake is coming. Fortunately, new research instead shows that most of these earthquakes are aftershocks ...

Major quakes can weaken seismic faults far away, scientists say

(PhysOrg.com) -- U.S. seismologists have found evidence that the massive 2004 earthquake that triggered killer tsunamis throughout the Indian Ocean weakened at least a portion of California's famed San Andreas Fault. The ...

Sichuan quake was once-in-4,000-year event: scientists

People who were killed, injured or bereaved in the 2008 Sichuan earthquake had the cruel misfortune to be victims of an event that probably occurs just once in four millennia, seismologists said on Sunday.

Improved imaging offers new insight into Mount Etna

With a technique called seismic tomography, researchers use the shape of traveling seismic waves from nearby or distant earthquakes to create 3D images of inner Earth, allowing them to "see" hundreds of kilometers below the ...

New class of Mars quakes reveals daily meteorite strikes

An international team of researchers, co-led by ETH Zurich and Imperial College London, has derived the first estimate of global meteorite impacts on Mars using seismic data. Their findings indicate that between 280 to 360 ...

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