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EarthNewfound fault may explain quakes
Tsunami simulations suggest that a newly discovered fault zone beneath the Atlantic Ocean could have released most of the seismic energy from three earthquakes that destroyed Lisbon, Portugal, on the morning of Nov. 1, 1755.
By Sid Perkins -
EarthAlaska shook, mountains spoke
Small pulses in atmospheric pressure detected in Fairbanks soon after the magnitude 7.9 Denali quake on Nov. 3, 2002, suggest that the temblor literally moved mountains.
By Sid Perkins -
EarthEarth sometimes shivers beneath thick blankets of ice
New analyses of old seismic data have distinguished the ground motions spawned by a previously unrecognized type of earthquake—quakes created by brief surges of massive glaciers.