LEGAZPI CITY, Oct. 20 (PNA) -— The new lava spotted flowing from Mayon Volcano's crater has stopped, the Philippine Institute of Volcanology and Seismology (Phivolcs) said Monday.
Eduardo Laguerta, Phivocs resident volcanologist, said like what happened on October 12, the 350-long lava flow was viscous, that's why it cannot flow continuously.
After the aerial survey conducted at 7:25 a.m. Monday, Laguerta said the 400-meter-long lava flowed from the west side of the lava dome.
“The lava flowed at the west side of the Bogña channel,” he said.
The Phivolcs official described Bogña channel as part of the southeast quadrant of the volcano, which is facing the Legazpi City and municipalities of Daraga and Sto. Domingo.
Due to the lava flow, new ash deposits have been noted at the slopes of the volcano.
Laguerta believed that the magma that has come out is still part of the old deposit of the previous eruption.
“If it is a new magma, it must not be viscous -- a new magma is not sticky,” he said.
He said the lava flow can be an indication of an imminent eruption, just like in 1984 -- after the lava flow had been spotted, in two weeks, the volcano erupted.
Meanwhile, in the Oct. 20 bulletin, the Phivolcs said, a faint crater glow was observed Sunday night while the agency's instruments recorded two volcanic quakes with a sulfur flux of 272 tons per day on October 19.
Mayon Volcano's status was raised to alert level 3 on September 15, which means eruption is imminent within weeks. (PNA) LAP/FGS/AMM/CBD/utb