GEOL 106 Lecture Notes - Rarefaction, Seismic Wave, Love Wave

• School: Queen's University
• Department: Geological Sciences and Geological Engineering
• Course: GEOL 106
• Professor: David Alan Hanes

Document Summary

First we need to know what seismic waves are and how they behave. Seismic energy waves radiate out from the focus of an earthquake as body waves. Some body wave motion gets transferred into surface wave motion when the body waves reach the surface. Love waves: move perpendicular to the direction of energy movement. Velocity of p and s waves depend on elasticity/density, of the material they are moving through. The more elastic a material is, the higher the seismic velocity. The more dense a material is, the lower the seismic velocity. Both p and s wave velocities change when they move into a different material. From equation (find in text): k=compressibility modulus (stress needed to compress the material). Mu=shear modulus (stress needed to change the shape).