Mayon volcano (Philippines): new lava dome in summit crater... A - TopicsExpress



          

Mayon volcano (Philippines): new lava dome in summit crater... A small lava dome is present at the top of the volcano. During a field survey PHIVOLCS scientists observed a new lava dome, approx. 30-50 m high. It is not known when exactly the dome had grown, but it seems likely that it was relatively recently. In the past 2 months, the volcano experienced weak and short phases of inflation, suggesting pulses of rising magma. In addition, sulphur dioxide emissions had been higher than normal during the past 2 weeks. However, no incandescence was observed during the past 4 months. As a precaution, PHIVOLCS decided to raise the alert level of the volcano from 1 to 2. An exclusion zone of 6 km radius around the summit is in place. Previously, it had been raised from 0 to 1 last year on 2 June, following changes in seismic activity and observed glow at the summit crater.
Posted on: Tue, 19 Aug 2014 08:11:52 +0000

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