1D Site Response & Surface Motion Calculator

Viscoelastic Wave Propagation (FFT & Thomson-Haskell Solution) | Estimates Surface Acceleration, Amplification & Predominant Frequency

Soil Profile Stratigraphy

Layer	Thick (m)	Vs (m/s)	γ (kN/m³)	Damping ξ	Action

Bedrock Properties

Vs (m/s)

γ (kN/m³)

Damping ξ

Input Bedrock Motion Time History

Time Step Δt (seconds)

Bedrock Accelerogram Values (g) [Comma/Space Separated] 0.0, 0.02, 0.05, 0.12, 0.25, 0.18, 0.08, -0.05, -0.15, -0.22, -0.10, -0.02, 0.04, 0.09, 0.03, -0.01, 0.0

Calculated Response Summary

Predominant Frequency

-- Hz

Peak Surface Accel. (PGA)

-- g

Peak Amplification Ratio

--

Bedrock vs Surface Acceleration

Transfer Function Amplification Spectrum A(f)