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Mayon Volcano restive; Alert Level 3 raised

/ 11:42 PM September 15, 2014
AN AERIAL view of Mayon Volcano taken on Aug. 16, a day after its alert level was raised to 2 MARK ALVIC ESPLANA/INQUIRER SOUTHERN LUZON

AN AERIAL view of Mayon Volcano. MARK ALVIC ESPLANA/INQUIRER SOUTHERN LUZON

MANILA, Philippines–The Philippine Institute of Volcanology and Seismology (Phivolcs) raised late Monday night Alert Level 3for Mayon Volcano in Albay province after it noted “a noticeable escalation of unrest.”

In a 10 p.m. bulletin, Phivolcs said that since 5 a.m. to 8 p.m. Monday, it detected 39 rock falls and 32 low-frequency volcanic earthquakes.

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It traced the rock falls to “incipient breaching of the growing summit lava dome” in the volcano’s southeastern crater rim. The volcanic quakes, it said, indicated “magma intrusion and/or volcanic gas activity.”

“Crater glow has become observable, indicating incandescence of the crater from molten lava and hot volcanic gas,” Phivolcs also said.

Because of the increased unrest, Phivolcs said it was raising the alert status of the active volcano from Alert Level 2 to 3.

Alert Level 3 means that Mayon “is exhibiting relatively high unrest and that magma is at the crater,” it said, adding that “hazardous eruption is possible within weeks.”

Phivolcs advised authorities to enforce the 6-kilometer radius Permanent Danger Zone (PDZ) around the volcano and the 7-km Extended Danger Zone (EDZ) on the southeastern flank due to the danger of “rock falls, landslides and sudden explosions or dome collapse that may generate hazardous volcanic flows.”–Rick Alberto

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TAGS: Albay, Mayon Volcano, Nature, volcanoes
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