Colombia Seismic Wave & Structural Shaking Simulator

Seismic Wave Front & Attenuation Map (Western Colombia) Epicenter: 4.530°N, 75.680°W

P-Wave (~6.0 km/s)

S-Wave (~3.5 km/s)

Surface Wave (~3.0 km/s)

Simulation Time: 0.0s Max Window: 60s

Moment Magnitude (Mw) 7.2

Focal Depth (km) 15 km

Target MMI / Seismogram City

Site Local Soil Condition

PGA Attenuation Decay Curve (GMPE vs Epicentral Distance) Youngs et al. Subduction Model

City Wave Arrivals & Impact (Pereira) MMI VIII (Severe)

P-Wave Arrival

4.2s

Primary Compressional

S-Wave Arrival

7.3s

Secondary Shear

Peak Ground Accel

0.38g

Ground PGA

Spectral Accel (Sa)

0.82g

T_b = 0.80s match

Real-time Seismogram Ground Acceleration Trace Z-Component Acceleration (g)

Structural Dynamic Resonance & Shear Drift Coupled Oscillator Model

Building Height / Typology

Structural Damping Ratio (ζ)

Seismic Assessment Verification Summary

Calculates P-wave arrival at 4.2s, S-wave at 7.3s, Peak Ground Acceleration of 0.38g (MMI VIII severe shaking), and structural spectral acceleration matching building fundamental period of 0.8s.

Verification Target: Pereira (8-Story Structure)