Walk-Run: Locating An Earthquake Using Triangulation

The arrival times of P and S waves from an earthquake are used to determine the location of an earthquake. Each station on the interactive map recorded an earthquake with a characteristic seismogram. Roll over the stations to see the epicenter triangulated. Touch buttons to watch movie of seismic waves, or touch "Walk-run" button to see wave travel can be demonstrated with a class.

 

VIEW the interactive in a separate tab, by clicking on "Open Resource". (Note some browsers lack the plugins for rollovers.)

OR click Download All.  AFTER downloading, you can Open either:

  •  by using Flash player, or
  •  by clicking File > Open from within your browser, find the file on your computer, and it should open as an interactive file. 


Keypoints:

Rolling over buttons indicated by pointing fingers reveals:

  • Information and seismograms from 3 widely spaced seismic stations
  • Use the stations to triangulate an epicenter location
  • Watch the earthquake waves progress from epicenter to each station.
  • Watch the "Walk-run" classroom activity animated in upper bos.


Level: Novice

398KB Open Resource
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