A surge of volcanic sulfur dioxide from Mayon Volcano has pushed emissions to their highest level in 15 years on the 29th day of its effusive eruption, the Philippine Institute of Volcanology and Seismology (Phivolcs) said on Wednesday, Feb. 4.
Based on campaign spectrometry measurements this month, Phivolcs said sulfur dioxide degassing has shown an increasing trend, with average emissions on Feb. 3 reaching 6,569 tons per day—the highest recorded…