Colombia 7.4 Earthquake Seismic Wave & Structural Vulnerability Modeler

MMI Intensity Scale

IX+ Extreme (PGA > 0.50g)

VIII Severe (PGA 0.34g - 0.50g)

VII Very Strong (PGA 0.18g - 0.34g)

VI Strong (PGA 0.09g - 0.18g)

V Moderate (PGA < 0.09g)

Historical & Tectonic Presets

Seismic Event Parameters M7.4 Fixed Baseline

Epicentral Depth (km) 15 km

Soil Type & Amplification 1.40x

Building Stock Unreinforced Masonry (%) 65%

Epicentral PGA

0.48g

MMI VIII (Severe)

Est. Masonry Damage Rate

42.5%

Structural Severe/Collapse

Est. RC Frame Damage

14.2%

Moderate Structural Yield

Isolated Municipalities

4 / 8

Road Access Loss > 50%

Calculated Impact Summary

Colombia 7.4 Earthquake Seismic Model: Hypocentral distance updated. Regional vulnerability computed based on 65% unreinforced masonry construction profile and soft alluvium soil parameters.