The Philippine Institute of Volcanology and Seismology (Phivolcs) has already found the fault that caused the magnitude 6.9 earthquake in Cebu on Tuesday evening, September 30, that killed 68 individuals.
In a statement on Friday, Phivolcs said its quick response team located the inland extension of the newly named Bogo Bay Fault in Sitio Looc, Brgy. Nailon, Bogo City.
‘The team observed fault scarps, open cracks, and small pressure mounds within a 2-meter-wide deformation zone,’ Phivolcs noted.
‘Initial field mapping recorded about 200 meters of surface rupture, while drone surveys revealed the fault may extend up to 1.5 kilometers, showing signs of right-lateral movement,’ it added.
The response team continues to conduct field verification in order to determine the full extent of the rupture.
Phivolcs, meanwhile, advised the public to stay vigilant ‘for strong aftershocks, secure their homes, know evacuation routes, and rely only on official sources for updates and safety instructions.’
As of 4 p.m. this Friday, a total of 4,378 aftershocks-ranging from magnitude 1 to 5.1-were recorded from the strong quake, wherein 21 of these were felt.