The DOST-PHIVOLCS has identified the Bogo Bay Fault as the source of the powerful Magnitude 6.9 Northern Cebu earthquake.
During a recent field investigation, the DOST-PHIVOLCS Quick Response Team discovered the fault’s onland extension in Sitio Looc, Bogo City.
The team observed fault scarps, ground cracks, and small pressure mounds within a two-meter deformation zone, indicating significant fault movement.
Initial field mapping recorded approximately 200 meters of surface rupture, showing clear ground displacement caused by the fault’s sudden movement.
Drone surveys revealed that the fault could extend up to 1.5 kilometers, displaying distinct signs of right-lateral horizontal movement.
PHIVOLCS scientists continue field verification to determine the fault’s full length and assess its seismic characteristics to enhance hazard information.
Authorities stressed that identifying the fault plays a crucial role in updating hazard maps and improving disaster preparedness strategies.
Meanwhile, the agency urged residents to stay alert for possible strong aftershocks that typically follow major earthquakes during seismic activity.
Officials advised the public to avoid structurally compromised buildings, secure their homes, and familiarize themselves with designated evacuation routes.
PHIVOLCS reminded the public to rely only on official sources like their website, social media, and authorized government agencies for updates.
Authorities aim to reduce disaster risks and strengthen community resilience in Northern Cebu and nearby provinces by promoting preparedness and understanding fault characteristics.
