The Philippine Institute of Volcanology and Seismology (Phivolcs) will launch the Central Digos Fault Atlas on Monday, March 17 to provide detailed maps of the fault and identify areas at risk of group rupture to aid in earthquake preparedness and disaster risk reduction.
The atlas offers high-resolution maps of the Central Digos Fault (CDF) in Digos City, Davao del Sur, which highlights vulnerable infrastructure, including commercial, residential, and industrial areas.
“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,” Phivolcs Director Teresito Bacolcol said.
Mapped as part of Phivolcs’ Sigma Project, the CDF spans 18 kilometers through several barangays, including Goma, Dulangan, and Ruparan.
The fault, identified in 2019, has the potential to generate a magnitude 6.6 earthquake, which could cause destructive ground shaking (Intensity VIII on the Phivolcs Earthquake Intensity Scale) in Digos City and surrounding areas.
The Sigma Project, a Department of Science and Technology Grants-in-Aid initiative under the Accelerated Earthquake Multihazards Mapping and Risk Assessment Program (ACER), aims to identify the location and subsurface features of active faults, assess potential earthquake magnitudes and recurrence intervals, and produce active fault maps and databases to support earthquake hazard mitigation efforts for various stakeholders, including the scientific community, engineers, urban planners, and government units.
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