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Cleveland volcano (Aleutian Islands): new activity of lava dome growth observed, AVO raises alert levelWednesday Feb 01, 2012 01:01 AM | Age: 116 days
BY: T Cleveland Volcano (Aleutian Islands) is showing renewed activity, which was observed in satellite data, and AVO is raising the Aviation Color Code to Orange and the Alert Level to Watch. A new lava dome has been observed in the summit crater, and as of 30 January 2012 was approximately 40 meters (130 feet) in diameter. There have been no observations of ash emissions or explosive activity during this current lava eruption. The lava dome that formed throughout the fall-winter of 2011 was largely removed by the explosive activity on 25 and 29 December, 2011. It remains possible for intermittent, sudden explosions of blocks and ash to occur at any time, and ash clouds exceeding 20,000 feet above sea level may develop. Such explosions and their associated ash clouds may go undetected in satellite imagery for hours. If a large, explosive, ash-producing event occurs, seismic, infrasound, or volcanic lightning may be detected by local and regional monitoring networks. There is no real-time seismic monitoring network on Mount Cleveland.
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Links / Sources: Previous newsMonday, Jan 02, 2012
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The photo was taken in spring 2009 and shows an explosion from Stromboli's NE crater in the evening twilight. In the first half of 2009 in particular,...
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