2D Physics Sub-Surface Wave Propagation Engine
Click/Drag hypocenter pin in canvas
S-Wave Velocity: 3.20 km/s | Basin Resonance: 1.84 Hz
Primary Compressional Wave (P)
Shear Wave (S) & Trapped Trajectory
Topographic Ridge Amplification Zone
Saturated Riverbed Alluvium
Peak Ground Accel. (PGA)
0.48 g
Severe Shaking Potential
River Valley Amp. Factor
2.85x
Soft Sediment Wave Trapping
Landslide Yield Index
0.74
HIGH (Newmark > 0.5)
Predominant Frequency
1.42 Hz
Matches Low-Rise Structures
Geomorphic Risk Workbench: Mountain vs. River Valley
⛰️ Steep Mountain Ridge
0.52g
- Topographic Scattering: Waves focus at sharp crests (2D ridge effect).
- Primary Destructive Hazard: Seismic Slope Instability & Rockfalls.
- Critical Threshold: Slopes >35° experience catastrophic failure when PGA >0.30g.
- Observation: Amplifies high frequencies at peak crests.
🌊 Saturated River Drainage Basin
0.71g
- Sediment Trapping: Soft alluvial soil impedes wave speed, dramatically increasing amplitude.
- Primary Destructive Hazard: Soil Liquefaction & Prolonged Shaking Duration.
- Critical Threshold: Sediment depth >30m causes trapped S-wave reverberation.
- Observation: Extends shaking duration by up to 300%.
Earthquake & Terrain Controls
Moment Magnitude (Mw)
6.5 Mw
Hypocenter Depth (km)
12 km
Mountain Slope Angle (deg)
38°
Riverbed Alluvium Depth (m)
45 m
Colombian Seismic Zone Navigator