A decade after the release of the West Valley Fault Atlas for the Greater Metro Manila Area in 2015, the DOST-PHIVOLCS will unveil an active fault atlas for Mindanao - the Central Digos Fault Atlas, on 17 March 2025 at Benrose Park, Digos City, Davao del Sur.
The Atlas contains high-resolution active fault maps detailing areas transected by the Central Digos Fault (CDF) in Digos City, including the buildings and infrastructure prone to ground rupture hazard. Based on the DOST-PHIVOLCS SIGMA Project active fault mapping activities, the CDF traverses a variety of commercial, residential, industrial, and other types of structures in Digos City.
“The release of this Atlas will empower communities, particularly the local government units, residents, and stakeholders of Digos City, to prepare for earthquake hazards. The Central Digos Fault Atlas will serve as a guide for science-based land use planning, zoning ordinance formulation, and disaster risk reduction,” said Director Teresito C. Bacolcol of DOST-PHIVOLCS.
The CDF is an active fault initially identified and mapped in 2019 by DOST-PHIVOLCS in Digos City, Davao del Sur. The 18-kilometer-long fault traverses portions of barangays Goma, Dulangan, Ruparan, Binaton, Tres de Mayo, Kiagot, Zone 1, and Aplaya. The study revealed that the fault has the potential to generate a magnitude 6.6 earthquake, which may result in very destructive ground shaking (Intensity VIII on the PHIVOLCS Earthquake Intensity Scale or PEIS) in the epicentral area and nearby municipalities.
About ACER-SIGMA
The DOST Grants-in-Aid project, Active Fault Mapping using Integrated Geophysical, Geomorphological, and Paleoseismological Methods or the SIGMA Project is part of the Accelerated Earthquake Multihazards Mapping and Risk Assessment Program of the Philippines (ACER Program). This initiative aims to:
• Determine the location and subsurface features of active faults,
• Assess the potential earthquake magnitudes and recurrence intervals, and
• Produce active fault maps and databases for various stakeholders, including the scientific community for earthquake hazards modeling, engineers, urban planners, and national and local government units to support earthquake hazard mitigation initiatives.
For more information, please contact:
Dr. Teresito C. Bacolcol
Director, DOST-PHIVOLCS
(+632) 8-426-1468 to 79
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