December 12, 2009
LEGAZPI CITY—Mayon Volcano shook at least 29 times on Thursday, its highest recorded seismic activity this week and indicating it remained active, scientists said Friday.
Volcanologists were continuing to monitor the mountain for quakes and gas emissions in case it was ready to erupt, the Philippine Institute of Volcanology and Seismology said.
The agency said seismic instruments had been detecting low- and high-frequency harmonic quakes, indicating magma was forming and climbing up the volcano’s vent.
Instruments had recorded 44 earthquakes that have rocked the volcano since Dec. 1, resident volcanologist Ed Laguerta said.
He said the volcano continued to disgorge sulfur dioxide, and that it had spat out 710 tons of the gas in the past 24 hours. The volcano had been spitting out 592 tons and up to 1,303 tons of sulfur dioxide in the past three days, Laguerta said.
Alert level 2 remains hoisted over Mayon volcano, meaning the six-kilometer permanent danger zone and the seven-kilometer extended danger zone are off limits to human activity.
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Mayon Volcano, also known as Mount Mayon, is an active stratovolcano in the province of Albay, in the Bicol Region, on the island of Luzon, in the Philippines.
Renowned as the "Perfect Cone" because of its almost perfectly conical shape, Mayon is situated 15 kilometres northwest of Legazpi City.
