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Unusual earthquakes measured off Oregon - Yahoo! News 
GRANTS PASS, Ore. - Scientists listening to underwater microphones have detected an unusual swarm of earthquakes off central Oregon, something that often happens before a volcanic eruption — except there are no volcanoes in the area.
http://news.yahoo.com/s/ap/20080412/ap_on_sc/earthquake
_swarm
added by wriver, 3 months 12 days ago
_swarm
