Earthquakes occur along a fracture in the Earth’s crust where one side moves relative to the other. A clip that shows how body waves move when traveling through the center of the planet. Each wave has a characteristic speed and style of motion. Observe animations of earthquake waves. The different colors of the lines represent the velocity of the waves: Note that the lines turn blue as they cross t An earthquake generates seismic waves that (1) penetrate the Earth as body waves (P & S) or (2) travel as surface waves (Love and Rayleigh). P waves, also called compressional waves or primary waves, move through material by squeezing and stretching the material in the same direction as the wave is moving. When the P waves arrive from an earthquakes, there are large squiggles in the seismograph.This animation simulates what Andrija MohoroviÄiÄ observed in 1909.
Easy-to-use controls speed-up, slow-down, or reverse the wave propagation. The lines represent P-waves radiating out from the earthquake. The movement at distant stations occurs at a microscopic scale. Here we exaggerate the motion by bouncing a building to show what sensitive instruments record as seismic waves arrive at the station. The lines represent P-waves radiating out from the earthquake.
All files are in windows media (.wmv) format in high definition (either 1080p or 720p).Animations were generated using a combination of the If you download any of these animations you implicitly agree to give proper credit to the authors. The location where Earthquakes originate is called the focus.Energy is released and travels through the Earth in the form of seismic waves.Seismic waves generate two types of wave motions: Body waves and surface waves.
The animations were converted from avi to mp4 (Quicktime) ... We acknowledge that some variations due to shorter‐period seismic waves are likely aliased into the time‐dependent displacement field and also note that seismic instrumentation is indispensable to fully understand the dynamics of events like the Tohoku‐oki earthquake. If you download any of these animations you implicitly agree to give proper credit to … or tap the animation for more explanation.A seismometer is an instrument that records movement of the ground beneath it. Ray paths and wavefronts were drawn using the TauP Toolkit. The SHaxi source code can be downloaded at the To save an animation 'right click | save target as...' on the desired resolution. This companion to the animation "Four-Station Seismograph network" shows the arrival of seismic waves through select wave paths through the Earth (P and S waves) and over the surface of the Earth. Animations were generated using a combination of the GMT, ImageMagick, and POVRay software packages. Early models (like this one) had a spool of paper and a suspended pen that drew a seismograph, shown below. Seismic Waves is a browser-based tool to visualize the propagation of seismic waves from historic earthquakes through Earth’s interior and around its surface. Seismic Wave Motion. All simulations were computed at the University of Utah Global Seismic Wave Propagation simulations were computed with the SHaxi and PSVaxi methods.
Click on Earthquake to start the simulation. Roll your mouse over Acknowledgement should be given to: Michael S. Thorne, H. Philip Crotwell, Gunnar Jahnke, and Heiner Igel.Software development that made the production of these animations possible was partially supported through NSF Grants EAR-1014749, EAR-0952187, and NASA Grant NNX11AH47G. The different colors of the lines represent the velocity of the waves: Note that the lines turn blue as they cross the Moho, because they speed up.A flat line in the seismograph means that the ground is stable.
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