Seisimager -

The problem with traditional refraction is that it only loves velocity increases with depth. If you have a stiff layer sitting on top of a soft layer (a "velocity inversion"), refraction fails. SW uses the dispersive nature of Rayleigh waves to create a 1D S-wave velocity profile. It turns "noise" (ground roll) into valuable data.

Have you used the surface wave module for environmental projects? Let me know in the comments below. seisimager

Peering into the Abyss: How SeisImager is Revolutionizing Near-Surface Geophysics The problem with traditional refraction is that it