What are the signs before a tsunami comes?

Before a tsunami comes, like all natural disasters, there will be precursors; for example, the sea water will be abnormal, that is, it will suddenly retreat a lot or suddenly rise a lot; there will also be shallow water not far from the coast. In the area, the sea surface will suddenly turn white, and then a long water wall will appear in front; and the ships in the shallow water area will swing and bump violently; there will also be strange loud noises on the sea, accompanied by a large number of fish, shrimp and other marine animals. Stranded, the water kept bubbling.

First of all, let’s talk about the formation of tsunamis. Tsunamis are caused by submarine earthquakes, submarine volcanic eruptions, or submarine landslides, as well as weather and meteorological changes that break the waves, causing the waves to be abnormally huge and extremely powerful. Destructive. Therefore, according to the causes of wave formation, tsunamis are divided into: earthquake tsunamis, volcanic tsunamis and landslide tsunamis; and earthquake tsunamis are divided into "down-type" tsunamis and "uplift-type" tsunamis based on the strong disturbance of sea water caused by the sharp rise and fall of the seafloor topography. "Down type" tsunami is due to certain tectonic earthquakes causing a large-scale sharp decline in the seafloor crust, and the seawater suddenly moves and sinks; while "uplift" tsunami is due to certain tectonic earthquakes causing a large-scale sharp rise in the seafloor crust, and the seawater also follows. It rises together with the uplift area, and large-scale seawater accumulation occurs above the uplift area.

The reason why people are afraid of tsunamis is because their harm is very serious, and tsunamis occur in a wide range, can spread to far places, and there is no obstruction on the sea surface; in the event of the foreboding mentioned above, Within a few minutes, the tsunami will come. The huge waves will cross the coastline and fields with a devastating force, slamming against the cities and villages on the shore, swallowing everything into its mouth. After the tsunami passes, There will only be a mess left, with broken parts of houses everywhere, as well as the bodies of animals and people who failed to escape.

Finally, after we understand the origin of the tsunami, its hazards, and the precursors of the tsunami, these can help us, and whether we are at the seaside or not, we must learn something about How to deal with a tsunami and how to save yourself.