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Restlessness continues at Mayon 15 September 2009

Posted by admin in activity reports, Mayon, Philippines.
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Mayon volcano, Philippines

The current episode of restlessness at Mayon volcano on the Philippine island of Luzon continues, with reports from the Philippine Institute of Volcanology and Seismology (Phivolcs) of ‘three minor ash explosions’ early this morning. Phivolcs has issued a new volcano advisory for Mayon today:

At 5:37 AM today, three minor ash explosions occurred at the summit crater of Mayon Volcano (13.2576 N, 123.6856 E). These events lasted for about three minutes. The explosions produced a brownish ash column that rose to a maximum height of about 700 meters above the crater and drifted to the southwest. For the past 24 hours, the seismic network recorded eleven (11) volcanic earthquakes. Steam emission varied from weak to moderate that drifted north-northwest and east-northeast. Sulfur Dioxide (SO2) emission rate decreased to 50 tonnes/day compared to the previous reading of 818 tonnes/day (12 September 2009). Faint crater glow ( Intensity I) was observed last night.

Phivolcs volcanologist Ed Laguerta, quoted by ABS-CBN, has said that the emissions contained ‘very minimal ash content’ and presented no ashfall danger, and represent a level of activity ‘normal to a volcano under alert level two’. Mayon remains on Alert Level 2, ‘increasing unrest’.

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

[Image: Mayon, 13 December 2006. Image copyright Tom Tam, reuse with credit permitted by copyright holder.]

Mayon volcano spews ash anew – ABS-CBN, 15 September 2009
Phivolcs notes 3 minor ash explosions at Mayon – GMANews.tv, 15 September 2009

Global Volcanism Program: Mayon – summary information for Mayon (0703-03=)
Philippine Institute of Volcanology and Seismology – website for Phivolcs

The Volcanism Blog