Crustal earthquakes are caused by the rapid release of energy in the process will produce a natural phenomenon of seismic wave vibration periods. Mutual compression between the plate and the plate collision on Earth, causing the edge of the plate and intraplate produce dislocation and fracture, is the main cause of earthquakes.
Location earthquake began called the source, the source just above the ground called the epicenter. Earthquakes often cause serious casualties, can cause fires, floods, toxic gas leaks, bacteria and diffusion of radioactive substances may also cause tsunamis, landslides, avalanches, ground cracks and other secondary disasters.
温馨提示：答案为网友推荐，仅供参考