02 September 2006
LEGAZPI CITY—Volcanologists yesterday said the series of ash explosions reported to have been occurring since Sunday could be one of the reasons for the stronger rumblings lately heard over Mt. Mayon.
On Thursday, the volcano exploded four times causing slight ashfalls over Barangay Maninila in Guinobatan, Albay and Barangay Buang in Tabaco City.
“The strong rumblings that can be heard may be associated with the ash explosions, the movement of magma inside the volcano or the collapse of lava fragments at the volcano’s slopes,” said Lesty Saquilon, science research specialist from the Philippine Institute of Volcanology and Seismology-Manila.
Because there had been no declining trend in volcanic activity, Phivolcs could not lift the alert level 4 status of the volcano, he said.
Phivolcs recorded continuous lava extrusion and a total of 277 tremor and 25 volcanic earthquakes during the same period.
Meanwhile, a new measuring device called “fly spec” arrived at Phivolcs-Bicol from the Hawaiian Volcano Observatory through the Volcano Disaster Assistance Program of the United States Geological Survey. It measures the volcano’s sulfur dioxide emission rate with greater flxibility, said Phivolcs. Ephraim Aguilar,Inquirer Southern Luzon
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