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Phivolcs watches restive Mayon 5 July 2009

Posted by admin in activity reports, Mayon, Philippines.
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Mayon Volcano, Philippines, 1968. (Photo: Kurt Fredrickson, Smithsonian Institution)

Above, a peaceful Mayon in 1968 – although it did produce a sizeable eruption in that year (Kurt Fredrickson, Smithsonian Institution) [source]. Below, pyroclastic flows during the eruption of Mayon in 1984 (Chris Newhall, USGS) [source].

Pyroclastic flows at Mayon Volcano, Philippines, 1984. (Chris Newhall, USGS)

Mayon volcano on the island of Luzon in the Philippines has been showing signs of abnormal activity, according to reports from Phivolcs (the Philippine Institute of Volcanology and Seismology – their unreliable website is here). A ‘rise in volcanic quakes’ has been recorded according to Phivolcs sources quoted in the local press, with 13 earthquakes over the last 24 hours, moderate steaming, and a glow in the crater being observed. Phivolcs is carrying out further surveys, including an overflight, and is monitoring the volcano 24 hours a day.

As yet the alert level for Mayon remains at level 1. A six-kilometre ‘permanent danger zone’ and a seven-kilometre ‘extended danger zone’ are in force around the volcano, and tourists and residents are being advised to keep their distance and respect these exclusion zones.

News
Phivolcs heightens watch of restive Mayon volcano – GMANews.TV, 4 July 2009
Phivolcs monitoring Mayon volcano – Inquirer.net, 4 July 2009
Mayon volcano showing signs of increased activity – ABS-CBN News, 5 July 2009
Restive Mayon volcano is watched by expertsManila Bulletin, 5 July 2009

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

The Volcanism Blog