PHIVOLCS assesses circumstances in two tremors that hit N. Cotabato

Marje Pelayo   •   October 29, 2019   •   766

MANILA, Philippines – The Philippine Institute of Volcanology and Seismology (PHIVOLCS) is examining the circumstances of the two earth tremors that rocked Talunan town in North Cotabato.

On October 16, a magnitude 6.3 earthquake jolted the area, and just this morning (October 29), a magnitude 6.6 tremor again shook the town.

According to Science and Technology Undersecretary and PHIVOLCS Officer-in-Charge Renato Solidum, the two tremors were interconnected.

The institute, however, is still determining the details of the ground movements in the tremors.

Solidum made certain that the latest earthquake was higher in intensity as it impacted the residents in Davao City with intensity 6 as compared to the previous tremor which was only intensity 5.

Doon sa Kidapawan almost the same intensity rating is 7, although sinasabi nila mas malakas yung pagkaramdam (That one in Kidapawan almost the same intensity rating, 7— although they were saying that the impact was stronger when felt),” Solidum said.

The PHIVOLCS is asking residents in the affected areas to be mindful of the cracks and structural damage in their areas.

Ang nakikita natin na consequence noong unang lindol pa lang, kapag may sumunod na malaki, iyong dati ng sira ay pwedeng madagdagan yung sira o pwede ring matuluyan din yung ibang mga nasira na totally mag collapse,” Solidum added.

(The consequence of being hit by a new quake not long after the first quake is the additional damage to an already structurally damaged building, increasing the risk of collapse.)

Solidum advised residents in landslide-prone areas to temporarily seek shelter in safer grounds while the Institute is still examining the cracks caused by the recent earthquake as these may bury their homes when another tremor occurs.

Also, the PHIVOLCS official called on the public to refrain from spreading misinformation regarding possible occurrence of a tsunami.

“Hindi po iyan totoo (That’s not true),” he said.

“Huwag na nating dagdagan ang pagaalala ng ating mga kababayan. Nasa lupa ang lindol hindi magkakatsunami sa dagat (Let us not add to people’s fear. The earthquake happened on the ground and has no capacity to cause a tsunami),” the official concluded. – MNP (with reports from Rey Pelayo)

Pangambang sumabog ang Mt. Taal matapos ang malakas na lindol sa Batangas, pinawi ng Phivolcs

Robie de Guzman   •   December 25, 2020

MANILA, Philippines – Pinawi ng Philippine Institute of Volcanology and Seismology (Phivolcs) ang pangamba hinggil sa muling pagsabog ng bulkang Taal kasunod ng magnitude 6.3 na lindol na yumanig sa Calatagan, Batangas pasado alas-7 Biyernes ng umaga.

Ayon kay PHIVOLCS director, Undersecretary Renato Solidum, maliit ang posibilidad na magkaroon ng epekto sa bulkan ang malakas na lindol bagaman patuloy pa nila itong inoobserbahan.

Binigyang-diin rin ni Solidum na sumabog na ang bulkan ngayong taon at malalim ang naramdamang lindol kaninang umaga.

Siguro pagdating doon sa fault baka wala, kasi hindi naman ito ganoon kalaki at malalim siya masyado. Pero pagdating sa Taal Volcano, kasi katatapos lang ng kanyang eruption, oobserbahan natin kung may epekto talaga ito,” ang pahayag ni Solidum.

“Titingnan natin kung magre-react ang Taal Volcano, pero dapat nating maaalala, matandaan, na nasa alert level 1 pa lang naman siya,” dagdag pa niya.

Magugunitang noong buwan ng Enero 2020 ay itinaas sa alert level 4 ang Taal matapos itong magbuga ng abo.

Sa ngayon ay nasa alert level 1 ang bulkan na ang ibig sabihin ay bahagyang pagtaas ng volcanic activity gaya ng gas o steam emission at mga pagyanig. Ipinagbabawal din ang pagpasok sa permanent danger zone ng bulkan.

Paliwanag ng ahensiya, gumalaw ang Manila trench kaya’t naramdaman ang pagyanig sa Metro Manila.

Tiniyak din ng PHIVOLCS na walang direktang epekto ang lindol sa Batangas sa West Valley Fault.

Bukod sa Metro Manila, Batangas at Laguna, naramdaman rin ang lindol sa ilang bahagi ng Rizal at Northern Luzon.

Magnitude 5.2 quake rattles parts of Davao Occidental

Robie de Guzman   •   December 25, 2020

MANILA, Philippines – A magnitude 5.2 earthquake rocked Davao Occidental on Friday, the Philippine Institute of Volcanology and Seismology (PHIVOLCS) reported.

In its bulletin, PHIVOLCS said the temblor occurred at 10 a.m., 89 kilometers southeast of Sarangani town in Davao Occidental.

It was tectonic in origin and had a depth of 65 kilometers.

Instrumental Intensity II was felt at Alabel, Sarangani and Instrumental Intensity I was felt at Kiamba, Sarangani; Koronadal City; General Santos City.

PHIVOLCS said it is not expecting damage nor aftershocks due to the quake.

The state seismologists earlier reported a magnitude 6.3 quake that struck off Calatagan, Batangas at 7:43 a.m. Friday.

MRT-3, LRT-2 resume ops after Batangas quake

Robie de Guzman   •   December 25, 2020

MANILA, Philippines – The operations of the Metro Rail Transit line 3 (MRT-3) has resumed after it was momentarily halted due to the magnitude 6.3-earthquake that struck off Calatagan, Batangas at around 7:34 a.m. Friday and felt in Metro Manila.

In an advisory, the MRT-3 management said the railway operations resumed at 8:32 a.m. but at a slower speed of 50 kilometers per hour (kph) from 60kph at the mainline after checking of tracks.

“Checking of buildings and facilities is ongoing,” the MRT-3 said.

The railway management was forced to suspend train operations for minutes earlier and advised train drivers to stop at the nearest station for precautionary measures.  

Meanwhile, the management of the Light Rail Transit line 2 (LRT-2) said operations resumed around 11 a.m. after it was temporarily suspended due to the quake.

The temblor was also felt in nearby provinces, including Bulacan, Bataan, and Laguna.

The Philippine Institute of Volcanology and Seismology (PHIVOLCS) said the quake was tectonic in origin and had a depth of focus of 109 kilometers.

The following intensities were recorded several areas: 

  • Intensity IV – Lemery, and Malvar, Batangas; San Pedro, Laguna; City of Manila; Marikina City; Quezon City; Cainta and Antipolo City, Rizal; Pasig City
  • Intensity III – Caloocan City; Tanay, Rizal; San Jose Del Monte City, and Plaridel, Bulacan; Gapan City, Nueva Ecija; Cabangan and Iba, Zambales; Samal,
  • Bataan; Valenzuela City; Malabon City
  • Intensity II – San Isidro, Nueva Ecija; Alaminos City, Pangasinan
  • Instrumental Intensities were also recorded:
  • Intensity IV – Bacoor City; Tagaytay City; Carmona, Cavite; Plaridel, Calumpit, San Ildefonso, San Rafael, and Malolos, Bulacan; Guagua, Pampanga; Puerto Galera, Oriental Mindoro; Las Pinas City
  • Intensity III – Talisay, Batangas; San Jose, Occidental Mindoro; Dagupan City; Quezon City; Pasig City; Muntinlupa City; Marikina City; Cabanatuan City
  • Intensity II – Roxas, Oriental Mindoro; Lucban, Quezon; Baler, Aurora; Palayan City
  • Intensity I – San Jose, Nueva Ecija; Gumaca, Lopez and Lucena City, Quezon

Phivolcs said there is no reported significant damage from the quake but it is expecting aftershocks.

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