What are seismic waves and what information can obtained from their study?
IRIS Consortium information.
Definition of elastic deformation.
Character of seismic waves:
Seismometers: pendulums, dead weights and springs, seismic networks and computers.
Sources of seismic events:
Elastic rebound model for earthquakes: creep vs. stick-slip behavior, the seismic 'cycle' for stick-slip motion as storage and release of elastic energy, the focus (hypocenter) as where the tear started and the epicenter.
Where was the earthquake located? Triangulation from P vs. S wave delay times. Virtual seismology link.
How to measure the size of an earthquake?
How did the earth move? First motion studies, and the pattern of first ground motions as a function of fault geometry and slip direction.
Using elastic waves to image the earth: reflection and refraction events.
What determines the size of an earthquake?
Return to Environmental Geology course index.
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