MANILA, Philippines 鈥 聽Mt. Kanlaon in Negros and Mt. Bulusan in Sorsogon may soon have phreatic or steam-driven explosions, based on their recent activities, the Philippine Institute of Volcanology and Seismology (Phivolcs) said Thursday.
Phivolcs officer-in-charge Renato Solidum Jr. said the agency had monitored a 鈥渢ornillo type volcanic earthquake鈥 around Kanlaon in the past several days, which he said is concerning.
He said this type of volcanic earthquake usually follows a phreatic explosion. However, he noted that the volcano is also swollen.
鈥淢ga nakaraang araw, mayroon tayong narecord na tornillo-type volcanic earthquake event 鈥 hugis turnilyo. Ito ang nagbibigay ng concern sa atin kasi pag nakikita natin ito, nagkakaroon ng phreatic or steam-driven explosion,鈥 Solidum said.
鈥淣amamaga pa rin ang bulkan at 鈥榶un pa rin ang kailangan natin paghandaan,鈥 he added.
Solidum said Phivolcs is also seeing possible steam-driven explosions over Bulusan.
鈥淜atulad ng Bulkang Kanlaon, nakikita natin na posibleng magkaroon din ng steam-driven explosion ang Bulkang Bulusan at importante na pag-ingatan ito,鈥 he said.
He advised residents near the volcanoes to be safe to avoid the four-kilometer permanent danger zone.
He said the current activities of the volcanoes are not yet alarming but residents must be ready for any circumstances.