By Ma. Cristina Arayata MANILA – A significant increase in sulfur dioxide (SO2) gas emission was observed in Mayon Volcano recently, but raising the volcano’s alert status is unlikely for now, Philippine Institute of Volcanology and Seismology (Phivolcs) Director Teresito Bacolcol said on Friday. “There are natural fluctuations in the SO2. It is normal that the […]
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