Computer animation of principles of operation of a seismograph that measures vertical ground oscillations.
Animation explaining how arrival times of P and S waves that travel through Earth’s mantle and surface waves that travel around Earth’s perimeter were used to develop standard travel-time curves.
A simple animation of P, S, and surface waves traveling to 4 seismic stations from an earthquake. A “seismic cow” is included just for fun.
This narrated animation shows ray paths and directions of particle motions for P, S, and surface waves traveling from a distant earthquake to a seismic station. A seismogram records the arrival times of these three types of seismic waves.
A birds-eye view of a strike slip fault with trees shaking during slip along the fault. Watch the apples drop!
Animation of horizontal block motions across a strike-slip fault.
Animation of plates moving apart at a spreading ocean ridge and horizontal motions across a transform fault that offsets the spreading ridge.
Computer animation of a shear (secondary) wave traveling across a slinky.
Animation by Professor Larry Braile of wave motions as a secondary (shear) wave passes through a solid.
Small-size animation of block motion across a reverse (compressional) fault.