Mayon Volcano


Mount Mayon
(Philippines) In mid-December, authorities declared a state of calamity near the Mayon Volcano on the island of Luzon. An Alert Level 3 has been issued which means that everyone within a 6km Permanent Danger Zone must evacuate. Volcanic quakes and rockfall events have been regular for the past month.

From a 10 January report:

Mayon Volcano's (13.2576 N, 123.6856 E) seismic monitoring network recorded 8 volcanic earthquakes and 12 rockfall events related to the detachment of lava fragments at the volcano's upper slopes during the past 24- hour observation period.

Emission of moderate volume of white steam was observed at the summit crater during cloud breaks yesterday. Pale crater glow was observed last night.

Sulfur Dioxide (SO2) emission rate was measured yesterday morning at an average value of 759 tons/day.

The sulphur dioxide emissions have decreased from almost 2,000 tons per day measured only days earlier.

I suspect that the thousands upon thousands of tons of sulphur dioxide spewed into the atmosphere by Mount Mayon and other volcanoes is probably not included in the calculations performed at East Anglia University.