seismic activity

seismic activity

Airlines Monitor Possible Volcanic Activity In Iceland

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<a href="http://on.aol.com/video/airlines-monitor-possible-volcanic-activity-in-iceland-518379905"> </a> Airlines are keeping an eye on possible volcanic activity in Iceland, after a previous eruption there in 2010 caused massive flight disruptions. But simmering seismic activity around the Bardarbunga volcano hasn't yet altered flights. Silicates in volcanic ash threaten aviation because they can gum up a plane's engines. But airlines also complained at the time that broader sections of airspace were closed based on theories rather than testing where the ash cloud was too thick to fly safely.