The Philippine Institute of Volcanology and Seismology (Phivolcs) on Tuesday, July 2, issued another notice of elevated volcanic sulfur dioxide (SO2) gas at Kanlaon Volcano.
Volcanic SO2 gas emission from the summit crater on Tuesday averaged 5,083 tons, the second highest emission from the volcano recorded this year and the third since instrumental gas monitoring began, Phivolcs said.
Kanlaon has been degassing increased concentrations of volcanic SO2 and volcanic earthquake activity has persisted at an average of 10 events per day, it said.
The overall monitoring parameters indicate that magmatic processes beneath volcano may be driving current unrest, causing persistently high concentrations of volcanic gas emission, swelling of the edifice, and occasional volcanic earthquake activity, Phivolcs said.
This means that there is current unrest driven by shallow magmatic processes that could eventually lead to explosive eruptions or even precede hazardous magmatic eruption at the summit crater, it added.*