STOCKHOLM — A magnitude 5.7 earthquake hit Iceland’s Bardarbunga volcano overnight, the biggest since tremors began 10 days ago, but there is still no sign of an eruption, the country’s Meteorological Office said on Tuesday.Intense seismic activity at Iceland’s largest volcano system has raised concern that an eruption could cause another ash cloud like that from the Eyjafjallajokull volcano in 2010 that shut down much of Europe’s airspace for six days."There was one event during the night ... it was a magnitude 5.7 (quake), the largest in this series," Palni Erlendsson, a geologist at the Met Office, said."Activity is still deep and we see no signs of anything close to the surface."On Sunday, Iceland lowered its warning code for possible volcanic disruption to the aviation industry to orange from red, the highest level on the country’s five-point alert system, after concluding that seismic activity had not led to a volcanic eruption under the glacier.Red alert indicates an eruption...
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