State seismologists identified the Philippine Fault-Agusan Marsh segment as the likely source of the magnitude 5.3 earthquake that jolted Talacogon, Agusan del Sur on Thursday evening. Based on SWIFT-CMT solutions, both earthquakes exhibited strike-slip faulting (horizontal motion along the fault), with the Philippine Fault - Agusan Marsh segment identified as the likely source,” the Philippine Institute of Volcanology and Seismology ( PHIVOLCS ) said on Friday.
The earthquake was reportedly moderately strong, with an intensity IV, in the cities of Bislig and Hinatuan in Surigao del Sur. A magnitude 4.6 aftershock followed, with an Intensity IV felt in Talacogon and Bislig. The Philippine Fault-Agusan March segment is part of the larger Philippine Fault system that runs through Agusan del Sur, the PHIVOLCS explained. “Earthquakes along this segment can also impact neighboring provinces, highlighting the importance of preparedness across the region,” state seismologists said. “While it is not possible to predict the exact timing and magnitude of future earthquakes, these risks should be approached with caution and readiness rather than fear.” PHIVOLCS added that tectonic stress increases along the Philippine Fault in Mindanao possibly due to recent earthquakes along the Philippine Trench. “These findings reinforce the importance of disaster preparedness and encourage communities to prioritize proactive safety measures in their daily lives,” it noted. During a strong earthquake the state seismology bureau reminded the public to practice “duck, cover, and hold”: Get down on the ground to avoid being knocked over.Take shelter under a sturdy table, or protect your head and neck with your arms. Stay away from windows, glass, and heavy objects.Hold on to your position until the shaking stops.—LDF, GMA Integrated New
EARTHQUAKE PHILIPPINE FAULT PHIVOLCS AGUSAN DEL SUR DISASTER PREPAREDNESS
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