Chengdu has just been hit by an earthquake. Can I still travel to Chengdu this weekend?

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Earthquake, also known as ground motion and ground vibration, is a natural phenomenon in which the earth's crust vibrates in the process of rapid energy release, and seismic waves will be generated in this process. The collision between plates on the earth has caused the dislocation and rupture of plate edges and plates, which is the main cause of earthquakes.

The place where the earthquake started is called the source, and the ground directly above the source is called the epicenter. The most violent ground motion of a destructive earthquake is called the extreme earthquake zone, which is often the area where the epicenter is located. Earthquakes often cause serious casualties, which can cause fires, floods, toxic gas leakage, the spread of bacteria and radioactive substances, and may also cause secondary disasters such as tsunami, landslides, collapses and ground fissures.

According to statistics, there are about 5 million earthquakes on the earth every year, that is, tens of thousands of earthquakes occur every day. Most of them are too small or too far away to be felt; There are about a dozen or twenty earthquakes that can really cause serious harm to human beings; About one or two earthquakes will cause particularly serious disasters. Earthquakes that people can't feel must be recorded by seismographs; Different types of seismographs can record earthquakes with different intensities and distances. Thousands of various seismic instruments are running around the world, monitoring the trend of earthquakes day and night.

At present, the level of science and technology can not predict the arrival of earthquakes, and it will not predict earthquakes for a long time to come. The so-called successful examples of earthquake prediction are basically coincidences. For earthquakes, what we should do more is to improve the seismic grade of buildings and do a good job in defense, rather than predicting earthquakes.