Some volcanoes 'scream' at ever-higher pitches until they blow their tops
It is not unusual for swarms of small earthquakes to precede a volcanic eruption. They can reach a point of such rapid succession that they create a signal called harmonic tremor that resembles sound made ...
Great Nepalese quake of 1255 points to Himalayan risk
A mega-quake in 1255 that wrecked the Nepalese capital, wiped out a third of the population of Kathmandu Valley and killed the country's monarch, King Abhaya Malla, was of a kind that may return to the Himalayas, ...
Sumatra quake was part of crustal plate breakup: Study shows huge jolt measured 8.7, ripped at least 4 faults
Seismologists have known for years that the Indo-Australian plate of Earth's crust is slowly breaking apart, but they saw it in action last April when at least four faults broke in a magnitude-8.7 earthquake ...
New study suggests how toads might predict earthquakes
GPS data reveals more on mega-thrust earthquakes
Scientists say the Big One could be even bigger
The Big One predicted for the San Andreas fault could end up being bigger than earthquake experts previously thought.
Researchers show how far South American cities moved in quake
The massive magnitude 8.8 earthquake that struck the west coast of Chile last month moved the entire city of Concepcion at least 10 feet to the west, and shifted other parts of South America as far apart as ...
Chilean Quake May Have Shortened Earth Days
(PhysOrg.com) -- The Feb. 27 magnitude 8.8 earthquake in Chile may have shortened the length of each Earth day.
Australian continent to blame for Samoa, Sumatra quakes
(PhysOrg.com) -- The recent earthquakes in the Pacific and Indonesia have one University of Queensland researcher questioning whether the two are related.
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 ...
Massive quake moves NZealand closer to Australia
A massive 7.8 magnitude earthquake last week has moved the south of New Zealand closer to Australia, scientists said Wednesday.
Less shake from artificial quakes, study says
Man-made earthquakes, a side effect of some high-tech energy drilling, cause less shaking and in general are about 16 times weaker than natural earthquakes with the same magnitude, a new U.S. study found.
Report: Tsunami would swamp California's economy (Update)
If a monster earthquake struck off Alaska's coast, tsunami waves would rush toward California, crippling the nation's busiest port complex and flooding coastal communities, a report released Wednesday suggests.
Slow earthquakes may foretell larger events
Monitoring slow earthquakes may provide a basis for reliable prediction in areas where slow quakes trigger normal earthquakes, according to Penn State geoscientists.