 Seismic wave

A propagating disturbance in or along the solid Earth, including body P waves, body S waves and surface modes. A water layer supports compressional acoustic motion but not a bulk shear restoring force.

Seismic waves are elastic waves that propagate through the Earth's layers, generated by various sources, such as earthquakes, volcanic activity, or artificial explosions. They are essential for understanding the Earth's interior structure and dynamics.