Earthquakes in Japan, Chile, Haiti: Are We In An Age Of Giant Quakes?

The devastating 2004 Indonesian tsunami, with its death toll of as many as 250,000 people, was caused by the first magnitude-9.0 earthquake since 1967. A succession of smaller but still destructive tremors in Haiti, Chile, and New Zealand -- surpassed by this year's magnitude-9.0 quake in Japan -- has some researchers wondering whether the number of large earthquakes is on the rise. An earthquake represents the abrupt release of seismic strain that has built up over the years as plates of the...Full Story
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