8.3 How do we know ... how to determine velocities of seismic waves in rocks?

Text and Images from Slide

Cylinder of rock used in the lab to measure waves.

Seismic velocities are measured in the lab by sending a created body wave through a 5-cm cylinder of rock (Fig. 8.16). By altering

Graph showing the measurements for velocity.

Fig 8.16

Fig 8.18

temperature and pressure (Fig. 8.18) we can measure changes in velocity due to changes in the rock environment.