verb (used with object) 1. to draw or haul toward oneself or itself, in a particular direction, or into a particular position: to pull a sled up a hill. 2. to draw or tug at with force. 3. to rend or tear: to pull a cloth to pieces.
The Love and Rayleigh waves (collectively known as surface waves) are the slowest moving but most damaging of the seismic waves.
Surface waves (e.g. Rayleigh waves, Love waves) that produce vertical motion of the ground surface produce the most damage during an earthquake.