21. The seismic waves from Landers, Linde says, did just that. 22. However, if the seismic waves were reflected back at him, he would be injured. 23. Tsunamis are seismic waves caused by undersea disturbances such as volcanic activities or earthquakes. 24. During the earthquake of 1985, the seismic waves were trapped in the soft strata. 25. Venezuelan unrest could also set off seismic waves across the U . S . economy. 26. Tsunami are seismic waves caused by undersea disturbances such as volcanic activities or undersea earthquakes. 27. Natural or artificially created seismic waves can be used to map structures in the Earth. 28. Velocity of seismic waves in the Earth versus depth. 29. Maria de la Luz Calderon rode the seismic waves that rolled through her apartment building. 30. The frequency-dependent attenuation of seismic waves leads to decreased resolution of seismic images with depth.
