Earthquakes are a natural phenomenon caused by the movement of tectonic plates. (Horizontal seam between the lithosphere), causing the displacement of a large rock slide or decisive movement and transfer energy. Through the adjacent rock layers. This energy is in the form of seismic center earthquakes occur along faults. In the depths of the earth ever measured depths in the mantle. The point is higher than at the Earth's surface is called the epicenter. The study of earthquakes and seismic waves are sent out called seismology. Once the epicenter of a large earthquake off the coast. Tsunamis can be caused by the earthquake may have also caused landslides. And occasionally volcanic activity have followed.
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