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| seismology | |
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is directly above the Earthquake 's focus.]] The epicenter or '''epicentre''' (ancient 's surface that is directly above the point where an Earthquake or other underground explosion originates. The epicenter is directly above the Hypocenter , the actual location of the energy release inside the earth. Seismic Wave s propagate spherically out from the hypocenter. Seismic shadowing occurs on the opposite side of the Earth from the earthquake epicenter because the liquid outer core absorbs the Transverse or shear waves ( S-wave s), and Refracts the Longitudinal or compressional ( P-wave s). After an earthquake has occurred, geologists can find out where the epicentre was located by looking at different seismograms. The term epicenter is also applicable to the center of other catastrophic events, such as an impact of a Meteorite or Comet . Colloquially, "epicenter" is used as a synonym for "center," but many find this use to be improper. See, e.g., this dictionary entry . |
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