NATIONAL
Advocates Philippines
Elevated Sulfur Dioxide Levels Detected In Taal
Photo credit: PHIVOLCS-DOST
In a recent update on the volcanic activity of Taal Volcano, the Department of Science and Technology - Philippine Institute of Volcanology and Seismology (DOST-PHIVOLCS) has reported elevated levels of sulfur dioxide (SO2) and ongoing degassing, prompting a reminder for communities to take necessary precautions.
As of 15 November 2023, the Taal Main Crater has emitted a total of 11,695 tonnes/day of volcanic sulfur dioxide gas, with visual monitors detecting persistent upwelling of volcanic fluids.
The resulting degassing plumes, categorized as short and weak to moderate in volume, have been carried southwest by strong winds. Notably, no volcanic smog or vog (volcanic smog) has been observed over the Taal Caldera, although a mild sulfur stench was reported in Banyaga, Agoncillo.
This recent activity is part of an ongoing trend, with Taal consistently releasing high concentrations of volcanic SO2 since March 2021. The average daily emissions since September 2023 have been recorded at 6,267 tonnes. Concurrently, moderate seismicity has been noted, with 629 out of 686 volcanic earthquakes recorded since 1 September 2023 identified as weak volcanic tremors associated with volcanic gas activity.
In light of this, DOST-PHIVOLCS advises affected communities to:
(1) Limit Exposure: Avoid outdoor activities, stay indoors, and seal doors and windows to minimize vog infiltration.
(2) Protect Yourself: Use N95 facemasks to cover the nose, drink plenty of water to reduce throat irritation, and seek medical assistance if experiencing severe effects, especially for those in sensitive groups.
(3) Be Cautious of Acid Rain: Acid rain, resulting from rainfall during volcanic gas emission, can damage crops and affect metal surfaces. Precautions should be taken to mitigate potential harm.
Despite these ongoing conditions, Alert Level 1 remains in effect for Taal Volcano, signifying abnormal activity.
The public is reminded that steam-driven or phreatic explosions, volcanic earthquakes, minor ashfall, and lethal accumulations or expulsions of volcanic gas can still occur. Entry into Taal's Permanent Danger Zone, particularly the Main Crater and the Daang Kastila fissure, is strictly prohibited.
Local government units are urged to continuously monitor and assess the exposure of their communities to volcanic SO2 and vog, taking appropriate response measures to mitigate potential hazards. DOST-PHIVOLCS assures the public that they are closely monitoring Taal Volcano's activity, with any significant developments to be promptly communicated to stakeholders.
As of 15 November 2023, the Taal Main Crater has emitted a total of 11,695 tonnes/day of volcanic sulfur dioxide gas, with visual monitors detecting persistent upwelling of volcanic fluids.
The resulting degassing plumes, categorized as short and weak to moderate in volume, have been carried southwest by strong winds. Notably, no volcanic smog or vog (volcanic smog) has been observed over the Taal Caldera, although a mild sulfur stench was reported in Banyaga, Agoncillo.
This recent activity is part of an ongoing trend, with Taal consistently releasing high concentrations of volcanic SO2 since March 2021. The average daily emissions since September 2023 have been recorded at 6,267 tonnes. Concurrently, moderate seismicity has been noted, with 629 out of 686 volcanic earthquakes recorded since 1 September 2023 identified as weak volcanic tremors associated with volcanic gas activity.
In light of this, DOST-PHIVOLCS advises affected communities to:
(1) Limit Exposure: Avoid outdoor activities, stay indoors, and seal doors and windows to minimize vog infiltration.
(2) Protect Yourself: Use N95 facemasks to cover the nose, drink plenty of water to reduce throat irritation, and seek medical assistance if experiencing severe effects, especially for those in sensitive groups.
(3) Be Cautious of Acid Rain: Acid rain, resulting from rainfall during volcanic gas emission, can damage crops and affect metal surfaces. Precautions should be taken to mitigate potential harm.
Despite these ongoing conditions, Alert Level 1 remains in effect for Taal Volcano, signifying abnormal activity.
The public is reminded that steam-driven or phreatic explosions, volcanic earthquakes, minor ashfall, and lethal accumulations or expulsions of volcanic gas can still occur. Entry into Taal's Permanent Danger Zone, particularly the Main Crater and the Daang Kastila fissure, is strictly prohibited.
Local government units are urged to continuously monitor and assess the exposure of their communities to volcanic SO2 and vog, taking appropriate response measures to mitigate potential hazards. DOST-PHIVOLCS assures the public that they are closely monitoring Taal Volcano's activity, with any significant developments to be promptly communicated to stakeholders.
Nov 15, 2023
