Find animations showing seismograph operation, tsunami, P and S Waves, earthquake focus versus epicenter, and actual footage of an earthquake.
Video Taken During an Earthquake (more info) This Flash movie by Exploring Earth places a human face on what it is like to actually experience an earthquake. Security cameras record what happens before, during, and after a 6.8 magnitude earthquake near Seattle, Washington. Time stamps in the lower left corner of each movie can be used to gauge quake duration.
Southern California ShakeOut (more info) These compelling earthquake simulations show ground movement and wave propagation as an earthquake rupture propagates along the San Andreas Fault. These simulations are from the Great Southern California ShakeOut earthquake drill conducted in 2008. The animations capture the shaking at length scales larger than about 300 ft (100 m) and provide detailed animations of the shaking for this scenario earthquake. Several different views are available. The files are QuickTime and are available in three different resolutions.
Seven Days ( This site may be offline. ) A movie from the Southern California Earthquake Center showing two approximately magnitude 5 earthquakes that occurred within seven days in Southern California. The second earthquake is on or near the San Andreas fault and led to concern of a much larger earthquake (that did not happen).
Focus of an Earthquake (more info) This simple Flash animation by McGraw-Hill shows the relationship between earthquake focus and earthquake epicenter which is found directly above the focus. Also displayed in the animation are the fault plane, fault scarp, and fault trace.
Formation of a Tsunami (more info) This Flash animation, by McGraw-Hill, illustrates the steps involved in producing a tsunami. First, motion along a submerged fault plane causes a column of water to rise directly above the epicenter. As the wave approaches the shore, it slows, wave height grows, and wave crests grow closer together. The heightened wave then reaches the shore and can extend far inland, destroying everything in its path. Tsunami-like waves can also be caused by underwater landslides. Be sure to check out our Tsunami Visualization Collection for more.