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File:Earthquake wave paths.svg

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    		 This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: Vectorized. The original can be viewed here: Earthquake wave paths.gif: . Modifications made by Hardwigg.

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    Cross section of the whole Earth, showing the complexity of paths of earthquake waves. The paths curve because the different rock types found at different depths change the speed at which the waves travel. Solid lines marked P are compressional waves; dashed lines marked S are shear waves. S waves do not travel through the core but may be converted to compressional waves (marked K) on entering the core (PKP, SKS). Waves may be reflected at the surface (PP, PPP, SS).

    Seismographs detect the various types of waves. Analysis of such records reveals structures within the Earth.
    Source http://pubs.usgs.gov/gip/interior/fig2.gif ; original upload in english wikipedia, 15 April 2005 by SEWilco
    Author SEWilco
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    This image is in the public domain in the United States because it only contains materials that originally came from the United States Geological Survey, an agency of the United States Department of the Interior. For more information, see the official USGS copyright policy.

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    current02:21, 31 October 2010Thumbnail for version as of 02:21, 31 October 2010300 × 250 (24 KB)Hardwigg{{Information |Description=Cross section of the whole Earth, showing the complexity of paths of earthquake waves. The paths curve because the different rock types found at different depths change the speed at w

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