Ground deformation monitoring of Kanlaon Volcano has detected a significant increase in swelling of the edifice over the past month, according to the Philippine Institute of Volcanology and Seismology (DOST-PHIVOLCS).
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Electronic Distance Meter (EDM) readings from Kanlaon Volcano Observatory show a rapid shortening of lines on the volcano’s middle and lower southeastern slopes since June 18, 2024. This sustained change coincides with slow but continuous inflation observed since 2022 through GPS and electronic tilt measurements, suggesting long-term pressurization within the volcano, PHIVOLCS said.
Combined with ongoing volcanic earthquake activity and elevated sulfur dioxide (SO2) emissions, the latest ground deformation data suggests according to PHIVOLCS for a possible magmatic intrusion beneath the edifice, potentially increasing the likelihood of an eruption.
Kanlaon remains under Alert Level 2 (Increasing Unrest) due to its ongoing magmatic activity that could lead to explosive eruptions or hazardous lava flows at the summit crater.
DOST-PHIVOLCS advises the public to strictly avoid entering the 4-kilometer radius Permanent Danger Zone (PDZ) surrounding the volcano to minimize risks from volcanic hazards like pyroclastic flows, ballistic projectiles, and rockfall.
- Civil aviation authorities are urged to advise pilots to avoid flying close to the volcano’s summit due to the dangers posed by volcanic ash and ballistic fragments.
- Communities residing near river channels on the southern and western slopes, particularly those with a history of lahars and mudflows, are encouraged to take precautionary measures during periods of heavy rainfall.
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