S-waves (S stands for secondary) are shear earthquake waves that pass through the interior of the Earth. S-waves don't change the volume of the material through which they propagate, they shear it.

Artie Burns is the next player to land a new deal in the secondary waves of free agency. The veteran corner has agreed to a ...

Traveling through the interior of the Earth, body waves arrive before the surface waves emitted by an earthquake. These waves are higher frequency than surface waves. P waves are also known as ...

This helps the system to more quickly identify trains that should be stopped before the arrival of S waves, or secondary waves, which are much more powerful and destructive. It took an average of ...