Earthquakes

February 17, 2004

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Earthquakes
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P-waves and S-waves
     P-waves travel faster, but S waves are usually 2-3 times larger than the P wave. This leads to the characteristic shape of an earthquake on a seismogram with a small P wave followed by a larger S wave. Because the P wave is traveling faster, the time between the P and S wave increases away from the earthquake.
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