Taal Volcano logs 34 volcanic earthquakes in 24 hours
LUCENA CITY — Taal Volcano in Batangas recorded a sharp increase in seismic activity over the past 24 hours following a recent phreatomagmatic eruption, the Philippine Institute of Volcanology and Seismology (Phivolcs) reported.
In its Monday morning bulletin, Phivolcs recorded 34 volcanic earthquakes during the latest monitoring period, which is a significant increase from Oct. 10, when the agency detected 20 volcanic earthquakes and nine tremors.
From October 1 to 9, Phivolcs logged only nine volcanic earthquakes and one tremor. No seismic events were recorded on October 1, 3, 4, 5, and 7.
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Phivolcs explained that volcanic earthquakes are generated by processes occurring within an active volcano and are identified through distinct seismic patterns, amplitudes, and wave periods.
Volcanic tremors, meanwhile, are continuous, low-frequency seismic signals that may exhibit regular or irregular waveforms.
Taal Volcano’s increased seismic activity came after a five-minute phreatomagmatic eruption Thursday night.
During the latest monitoring period, Taal Volcano also emitted 2,406 metric tons of sulfur dioxide daily, based on measurements recorded on Oct. 9. Its gas plume rose 800 meters above the main crater before drifting southwest.
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Phivolcs reported no volcanic smog or vog and no upwelling of hot fluids in the main crater lake.
Taal Volcano remains under Alert Level 1, indicating low-level volcanic unrest./coa
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