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How to track and report earthquakes in Alaska

A report by the USGS suggests that more than one in five earthquakes in the U.S. in the past 30 years have been caused by a large earthquake.The earthquake maps show that the number of earthquakes that were triggered by an earthquake increased from 7,831 in 2005 to more than 3,000 in 2011, a rise

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USGS earthquake map: USGS shows new magnitude 8.1 quake hit Colorado

We have a new earthquake map from the USGS that shows the largest magnitude 8 (or 9) earthquake to hit Colorado in nearly three decades.The new map, released this week, shows that a magnitude 8 earthquake hit about 1:50 p.m.Saturday in the Colorado town of Longmont, about 10 miles northeast of the city of Greeley.The