242 earthquakes in 24 hours hit Taal volcano, Philippines


242 earthquakes in 24 hours hit Taal volcano, Philippines
In the 24 hours before March 15, the Taal network of volcanoes recorded 252 volcanic earthquakes, including 17 episodes of volcanic tremors lasting from 1 to 4 minutes and 5 hybrid events.

During the same period, activity in the Main Crater consisted of a moderate release of steam plumes from fumarole vents, which rose 10 m in height.

The rise of high-temperature volcanic gases to the surface of the lake was observed yesterday evening from 18:30 to 20:45 LT.

Sulfur dioxide (SO 2) emissions averaging 518 tonnes per day were measured yesterday, March 14th.

The maximum temperatures of 71.8 ° C and pH 1.59 were last measured in the Main Crater Lake on March 4 and February 12, 2021, respectively.

Ground deformation parameters derived from analysis of electron tilt, continuous GPS and InSAR data showed very slow and steady inflation and expansion of the Taal region following the January 2020 eruption. These parameters may indicate an increase in magmatic activity at a shallow depth under the cone.

The warning level has remained at 2 (increased unrest) since March 9, and PHIVOLCS reminds the public that sudden steam or phreatic explosions, volcanic earthquakes, minor ash falls, and fatal accumulations or releases of volcanic gas can occur and threaten territories in Taal.

The Institute strongly recommends that entry to TVI, the Taal Permanent Hazard Zone or PDZ, especially in the vicinity of the Main Crater and Daang Kastila Fissure, remain strictly prohibited.

Disaster response officers ordered the evacuation of residents living near the volcano on February 16, 2021.

In January 2020, Taala erupted, for the first time in decades, spewing volcanic ash up to 16.7 km above sea level and affecting the lives of at least 500,000 people.