Smog in Metro Manila due to ‘human activities’ pollution, not Taal Volcano — Phivolcs

Aileen Cerrudo   •   June 29, 2021   •   997

MANILA, Philippines — The Philippine Institute of Volcanology and Seismology (Phivolcs) on Tuesday (June 29) clarified that the smog experienced in Metro Manila is the effect of pollution from human activities and not from Taal Volcano.

Phivolcs observed high levels of volcanic sulfur dioxide or SO2 gas emissions and steam-rich plumes in the past days. SO2  emission averaged 14,326 tonnes per day as of June 28.

Several residents in Metro Manila observed haze in their area which caused concern especially with the volcanic gas emission in Taal Volcano.

“The haze which is being experienced by some residents of Metro Manila is smog caused by pollution and human activity. The haze is not from Taal Volcano,” the agency said.

Meanwhile, residents near Taal Volcano were advised to take precautions including staying indoors and wearing masks to prevent exposure to SO2.

According to Phivolcs, the Taal region continues to undergo very slow extension since 2020. These parameters indicate overall that magmatic unrest continues to occur at shallow depths beneath the edifice. Alert Level 2 (Increased Unrest) is currently maintained over Taal Volcano. AAC

Magnitude 5.1 quake rattles Occidental Mindoro

Robie de Guzman   •   December 21, 2021

A magnitude 5.1 quake jolted parts of Occidental Mindoro and nearby areas on Tuesday, the Philippine Institute of Seismology and Volcanology (PHIVOLCS) said.

In a bulletin, PHIVOLCS said the epicenter of the quake was located 15 kilometers northeast of Sablayan, Occidental Mindoro. It occurred at 12:08 p.m.

The temblor was a tectonic in origin and had a depth of 15 kilometers.

PHIVOLCS said the quake was felt at the following areas:

• Intensity IV – Sablayan and Rizal, Occidental Mindoro
• Intensity III – Abra De Ilog, Santa Cruz and Calintaan, Occidental Mindoro; Calapan City and Bansud, Oriental Mindoro
• Intensity II – Makati City; Batangas City; Baco, Oriental Mindoro
• Intensity I – Puerto Galera, Oriental Mindoro; Tingloy, Batangas;

“This is an aftershock of the October 03, 2021 M5.3 Sablayan, Occidental Mindoro Earthquake event,” the agency noted in its report.

Damage and aftershocks are to be expected following the quake, PHIVOLCS said.

Magnitude 5.5 quake hits Paluan, Occidental Mindoro — Phivolcs

Maris Federez   •   December 13, 2021

MANILA, Philippines — A magnitude 5.5 earthquake hit the town of Paluan in Occidental Mindoro at 5:12 in the afternoon on Monday (December 13).

The Philippine Institute of Volcanology and Seismology (Phivolcs) said the tremor was tectonic in origin with a depth of 104 kilometers.

Reported intensities were as follows:

Intensity IV- Calatagan, Batangas; Puerto Galera, Oriental Mindoro;

Intensity III – Batangas City, Lemery, Malvar and Bauan, Batangas; Tagaytay City and Amadeo, Cavite; Quezon City; City of Manila and Pasay City

Intensity II- Taguig City; Mandaluyong City; Makati City; Caloocan City; Malabon City; Tanay, Rizal; San Felipe, Zambales

Instrumental Intensities, on the other hand, reported the following:

Intensity IV – Calatagan, Batangas; Calapan City, Oriental Mindoro

Intensity III – Tagaytay City, Cavite; Plaridel, Bulacan; Batangas City; San Jose, Occidental Mindoro

Intensity II – San Ildefonso, Calumpit, and San Rafael, Bulacan; Carmona, Cavite; Muntinlupa City; Olongapo City; Malolos City, Bulacan; Dolores, Quezon; Talisay, Batangas

Intensity I – Pasig City; Quezon City; Las Piñas City; Malabon City; Marikina City; Guagua, Pampanga; Cabanatuan City, Nueva Ecija; Mulanay and Mauban, Quezon; Pandi and Marilao, Bulacan

Phivolcs said that there was no notable damage from the quake but aftershocks are likely to take place.

PHIVOLCS: Magnitude 5.3. quake jolts Batangas, others areas

Robie de Guzman   •   December 13, 2021

MANILA, Philippines — An earthquake with a magnitude of 5.3 hit parts of Batangas and other nearby areas, the Philippine Institute of Volcanology and Seismology (PHIVOLCS) said Monday.

In its earthquake bulletin, the PHIVOLCS said the quake was recorded approximately 24 kilometers southwest of Calatagan Batangas around 5:12 p.m.

The temblor had a depth of 99 kilometers and was tectonic in origin.

PHIVOLCS said Intensity 3 was felt in Quezon City while intensity 2 was felt in San Felipe in Zambales.

Instrumental Intensity 1 was felt in Quezon City, Tagaytay City, Batangas City, and Calatagan.

PHIVOLCS said no damage is expected from the quake but aftershocks are likely to occur.

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