Seismic waves can also be labeled by the paths they take in the Earth.
Body waves (P or S) travel through the interior of the Earth.
Surface Waves travel along the Earth surface. Their speeds are slower and their amplitudes decrease slowly with distance compared to the body waves.
Two Kinds of Surface Waves
Love waves are pure S-type surface waves. They vibrate the ground from side-to-side with no vertical movement.
Rayleigh waves are the P and S mixture. They vibrate the ground in an elliptical pattern.
Seismic Wave Types