June 15, 2021

Taal Volcano is still experiencing magmatic disturbance and degassing

The Taal Volcano has produced a slew of volcanic earthquakes in the last 24 hours, after creating none or just a handful in the previous days.

221 volcanic earthquakes were documented by the Philippine Institute of Volcanology and Seismology (Phivolcs), including 29 low frequency volcanic quakes and 192 volcanic tremor episodes lasting one to 135 minutes.

Movements or eruptions of magma from the volcano create volcanic quakes. These might last as little as a minute. Volcanic tremors, on the other hand, might linger for minutes, hours, or even days.

Since April 8, there has been a low-level background tremor. It’s a low-energy ground vibration that may be linked to fluid or gas movement.

Meanwhile, activity in the main crater was dominated by the upwelling of hot volcanic fluids in its lake, which produced 1,500-meter-high plumes. On June 14, sulfur dioxide (SO2) emissions averaged 5,837 tons per day.

Last June 10, Taal had its greatest SO2 emissions ever, averaging 9,911 tons per day.

“The data points to ongoing magmatic disturbance under the volcano. Due to gas motion, it is actively degassing, as shown by significant sulfur dioxide emissions and the occurrence of volcanic tremors and earthquakes “Renato Solidum, Jr., Phivolcs director, said the Philippine News Agency on Tuesday.

Since March 9, the Taal Volcano has been on alert level 2 (increasing unrest), and there is still a risk of phreatic eruption or steam-driven explosion.

The decision to raise the volcano’s warning level would be based on the overall criteria observed, including as tremors, deformation, and gas emission, according to Solidum.

“So far, earthquakes have been episodic rather than constant. Despite the fact that earth deformation is ongoing, it is still sluggish. Over Taal, alert level 2 is maintained “he said

The public is advised to stay away from the Taal Volcano Island (TVI) because abrupt steam or gas-driven explosions are possible, according to Solidum.

In the event of fresh disturbance, Phivolcs recommended local government authorities to examine and reinforce the preparation of previously evacuated barangays near Taal Lake.

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