(Eagle News)–Seven rockfall events were monitored at Mayon in 24 hours. The Philippine Institute of Volcanology and Seismology said also monitored at the volcano, which remains on alert level 1, was sulfur dioxide emission. PHIVOLCS said the emission was last measured at 436 tons–or below baseline average— on  October 29. An inflation of the lower to middle slopes since July 201, “non-steady” inflation from late 2019 to mid-2020 and short-term deflation of the middle slopes […]