Tag: Earthquakes

Phivolcs chief says “earthquake swarm” happening in Batangas; “Big One” in Metro Manila, still possible

  (Eagle News) – What happened in Batangas was an “earthquake swarm” — a series of quakes without a distinct very large earthquake – and there is no sign it has stopped, according to the director of the Philippine Institute of Volcanology and Seismology (PHIVOLCS) Renato Solidum Jr. For Phivolcs, what was the main “shock” before of April 4 recorded at 5.5 magnitude had been replaced by this 6.0 magnitude of last Saturday, April 8, […]

PHIVOLCS to public: Minimize potential hazards

PEÑABLANCA, Cagayan, Jan. 31 (PIA) – –  The director of the Philippine Institute of Volcanology and Seismology (PHIVOLCS) urged the public to help the agency in mitigating and minimizing the potential hazards of earthquakes and volcanic eruptions. Director Renato Solidum, during the Office of the Civil Defense (OCD) National Disaster Response Plan (NDRP) cascading workshop, said appropriate preparedness, mitigation and response activities must be based on appropriate hazard and impact scenarios. “There is a need […]

How earthquakes happen

Seismic activity is concentrated along fault lines ­­ areas of fracture in the Earth’s crust ­­ generally found near ridges or tectonic plate boundaries. Constantly in motion, these huge plates sometimes collide, forcing one beneath the other. The resulting friction creates energy along the fault lines, which eventually become unstable and rupture, sending out a shock wave. The energy released is felt as an earthquake. After the initial jolt, aftershocks can strike as neighboring plates […]

Three quakes jolt Batangas, Bohol and Catanduanes

Three moderate earthquakes jolted the provinces of Batangas, Bohol and Catanduanes in a span of seven hours on Saturday, according to the Philippine Institute of Volcanology and Seismology (Phivolcs). In its bulletin, Phivolcs said the latest tremor of 4.1 magnitude occurred at 1:09 p.m. with its epicenter located 21 kilometers northwest of Calatagan, Batangas. The agency said the quake, which was tectonic in origin, had a depth of 112 kilometers. It was felt at Intensity […]