Mayon’s volume of sulfur dioxide emission up, quakes more frequent

STILL RUMBLING Mayon volcano continuously generates pyroclastic density currents and lava flow as seen in this photo taken at 5:40 p.m. on Monday in Daraga, Albay. Philippine Institute of Volcanology and Seismology has recorded increased activity on Monday morning due to lava dome collapse. (Photo contributed DENNIS MIRABUENO)

The sulfur dioxide emission of Mayon has increased over the last 24 hours.

This is the report from Philippine Institute of Volcanology and Seismology (Phivolcs).

The agency cited its Wednesday bulletin at 5 a.m. that showed Mayon emitted 1,128 tons of sulfur dioxide on July 11 or Tuesday.

This is higher that 721 tons recorded the day before.

Phivolcs also monitored an uptick in volcanic earthquakes from three to 24.

Amid these activities, the volcano remains on Alert Level 3.

Meanwhile, the volcano’s rockfalls and pyroclastic density current (PDC) events have lessened.

The number of rockfalls has gone down from 511 since June 10 to 423.

PDC events also went down from 38 to eight since Tuesday, July 11.

Amid these occurences, Mayon remains on Alert Level 3.

Meanwhile, Phivolcs said Mayon’s “very slow” effusion of lava flow is still at 2.8 kilometers (km) along Mi-isi Gully.

It reached 1.4 km along Bonga Gully.

Lava dome collapse on both gullies extended to 4 km along Basud Gully.

Phivolcs warned residents near Mayon against several dangers.

These events include rockfalls, landslides, avalanches, ballistic fragments, lava flows, and moderate-sized explosions.

National Risk Reduction and Management Council said the continuous volcanic activity has affected 38,376 individuals in 26 barangays in Bicol.

It has also displaced 20,259 residents who are now in 28 evacuation centers.

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