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Quake jolts Siargao Is.

A 4.0 magnitude earthquake jolted Siargao Island in Surigao del Norte province at dawn on Friday, the Philippine Institute of Volcanology and Seismology (Phivolcs) said.

Sulfur dioxide emission tends to increase through time as magma degasses with increasing rates as it moves up from great depths beneath the volcano, the Philippine Institute of Volcanology and Seismology said.

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Mayon ‘calms down’ but threat remains

A beautiful but still dangerous Mount Mayon lurks underneath thick clouds that have been covering the volcano in the past two days.

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Mayon Volcano had two episodes of sporadic lava fountaining within seven hours from Saturday evening to early yesterday morning, leading to lava flows up to three kilometers down its gullies.

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Kanlaon belches

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The restive Mount Kanlaon in Negros yesterday generated a steam-driven or low-energy phreatic eruption, according to the Philippine Institute of Volcanology and Seismology.

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Kanlaon Volcano on Negros Island continues to exhibit a moderate level of unrest as the Philippine Institute of Volcanology and Seismology recorded 53 volcanic earthquakes from Saturday to yesterday.

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