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by ars
5574 days ago
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From http://earthquake.usgs.gov/earthquakes/eqinthenews/2011/usc0... "The March 11 earthquake was preceded by a series of large foreshocks over the previous two days, beginning on March 9th with an M 7.2 event approximately 40 km from the March 11 earthquake, and continuing with a further 3 earthquakes greater than M 6 on the same day." |
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