Shear Wave Velocity Calculator

Your details

Choose which quantity you want to find.
Selecting a preset fills in typical G and rho values. You can then override them.
Resistance of the material to shear deformation.
GPa
Mass per unit volume of the material.
kg/m³
Optional: used to compute wavelength alongside Vs in the primary mode.
Hz
Shear wave velocity (Vs)NEHRP Class A: Hard rock
3,202.56m/s

Speed at which the shear (S) wave propagates through the material

Shear wave velocity3.2026km/s
Shear modulus (G)80GPa
Density (rho)7,800kg/m³
Wavelength (lambda)32.0256m
Frequency (f)100Hz
Acoustic impedance (Zs)24.98MRayl
NEHRP site classClass A - Hard rock
3,202.56 m/s
Class E (Soft soil)<180Class D (Stiff soil)180-360Class C (Dense soil/rock)360-760Class B (Rock)760-1500Class A (Hard rock)1500+

Vs = 3202.6 m/s, NEHRP site class A (Hard rock)

  • The shear wave velocity of 3202.6 m/s (3.2026 km/s) falls in NEHRP site class A (Hard rock).
  • Acoustic impedance is 24.980 MRayl. High-impedance contrasts between adjacent layers cause strong seismic reflections.
  • At the given frequency, the wavelength is 32.026 m. Features smaller than about half this wavelength cannot be resolved seismically.

Next stepRock sites (Class A-B) generally have low seismic amplification. Verify with a geophysical site investigation report.

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