Friday, July 10, 2009

Mayon Volcano, Philippines - John Seach

Mayon volcano in the Philippines has been raised from Alert Level 1 (low level unrest) to Alert Level 2 (moderate unrest). Beginning June 2009 seismic activity increased to the same level when a phreatic explosion occurred last August 2008. Ground uplift of one centimetre has been measured, and a summit glow was visible from Lignon Hill Observatory. An aerial survey on 8th July, 2009, showed a cone-shaped pile of hot, steaming old rocks at the summit. The low frequency volcanic earthquakes and ground uplift may indicate that new magma is rising towards the surface. A 6-km radius Permanent Danger Zone and the 7-km Extended Danger Zone on the southeast flank of the volcano are off-limits at Mayon volcano.
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