(Eagle News) — Over 200 volcanic earthquakes were monitored at Taal in 24 hours.
The Philippine Institute of Volcanology and Seismology said the 216 quakes at the volcano, which remains on alert level 2, included 177 episodes of volcanic tremors with durations of one to 32 minutes, 39 low-frequency volcanic earthquakes, and an ongoing low-level background tremor that started at 9:05 a.m. on April 8.
A weak emission of steam-laden plumes from fumarolic vents was also monitored.
Sulfur dioxide emission averaged 1,932 tons on April 10.
“Temperature highs of 71.8°C and pH of 1.59 were last measured from the Main Crater Lake respectively on 04 March and 12 February 2021,” PHIVOLCS said.
According to PHIVOLCS, a “very slow and steady inflation and expansion” of the Taal region since after the January 2020 eruption indicate “magmatic activity at shallow depths beneath the edifice.”
PHIVOLCS reminded the public that at alert level 2, “sudden steam-driven or phreatic explosions, volcanic earthquakes, minor ashfall, and lethal accumulations or expulsions of volcanic gas can occur and threaten areas within and around (Taal Volcano Island).”
It reiterated entry into Taal Volcano Island, Taal’s Permanent Danger Zone or PDZ, especially the vicinities of the main crater and the Daang Kastila fissure, and occupancy and boating on Taal Lake should remain prohibited.
“(Department of Science and Technology)-PHIVOLCS is closely monitoring Taal Volcano’s activity and any new significant development will be immediately communicated to all stakeholders,” PHIVOLCS said.
