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Mayon erupts ash to 0.5 km 12 December 2009

Posted by admin in activity reports, Mayon, Philippines.
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Mayon volcano had a minor ash eruption on the evening of Friday 11 December, according to reports from the Philippines. The eruption happened at around 19:59 local time, and was preceded by rumbling sounds and about 50 earthquakes, detectable by people living in nearby villages. Ash was ejected to an altitude of 0.5 km above the crater.

According to the Philippine Star, staff at the Lignon Hill observatory of the Philippine Institute of Volcanology and Seismology (Phivolcs) said that three minutes of harmonic tremor was detected around 20:00 local time, but ‘admitted that they failed to observe the actual explosion’.

On the preceding day (Thursday 10 December) Phivolcs registered 29 earthquakes including ‘low- and high-frequency harmonic quakes, indicating magma was forming and climbing up the volcano’s vent’.

For all our Mayon coverage: Mayon « The Volcanism Blog.

Mayon volcano acting up againManila Standard Today, 12 December 2009
Mayon shoots up ash anewPhilippine Star, 13 December 2009

Global Volcanism Program: Mayon – summary information for Mayon (0703-03=)
Philippine Institute of Volcanology and Seismology – website for Phivolcs, when it’s working

The Volcanism Blog



1. Chance Metz - 13 December 2009

Sounds li ke it is getting ready to blow. 50 earthquakes is alot.

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