California has a 93 percent chance of a magnitude-7 or greater earthquake occurring by 2045. Early warning systems, now in development, could limit casualties and damage.
Earthquakes are the result of plate tectonics, or shifting plates in the crust of Earth, and quakes occur when the frictional stress of gliding plate boundaries builds and causes failure at a fault line. In an earthquake, elastic strain energy is released and waves radiate, shaking the ground. Scientists can predict where major temblors might occur in a general sense, but research does not yet allow forecasts for specific locations or accurate predictions of timing. Major earthquakes, some generating tsunamis, have leveled entire cities and affected whole countries. Relatively minor earthquakes can also be induced, or caused by human activity, including extraction of minerals from Earth and the collapse of large buildings.
A 7.9-magnitude earthquake struck off Kodiak, Alaska, this morning. A tsunami warning is in effect for parts of Alaska and British Columbia, Canada.
A magnitude-4.4 earthquake just hit Delaware Bay, Delaware, surprising people in The First State, a place typically unaccustomed to tremblers.
A new paper suggests the ancient Greeks built and rebuilt structures on fissures created by earthquakes, viewing the tremors as mystical occurrences.
An earthquake-toppled house in the ancient city of Jerash is providing archaeologists with clues on how artisans constructed mosaics during the eighth century.
A 4.2-magnitude earthquake hit Edmond, Oklahoma last night (Aug. 2) at 9:56 pm. local time, according to the U.S. Geological Survey.
A so-called seismic zone off the coast of Alaska could trigger deadly tsunamis like the one that caused the Fukushima nuclear disaster in Japan in 2011, a new study finds.
A new animated map illustrates the rapid increase in seismic activity in Oklahoma, which scientists attribute to the growth of the fracking industry.
The Hillary Step, a rocky outcrop just beneath the summit of Everest, has finally succumbed to gravity and partially collapsed.