The tsunami is caused by an undersea earthquake with a magnitude of more than 6.5 and whose source is within 50 kilometers of the sea floor.
Natural disasters include mountain torrents, typhoons, tornadoes, haze, earthquakes, tsunamis, landslides and so on. One of the things that people are curious about is how tsunamis form and what causes them?
A tsunami is a catastrophic ocean wave, usually caused by an undersea earthquake with a focal point within 50 kilometers of the ocean floor and a magnitude of 6.5 or more. Underwater or coastal landslides or volcanic eruptions can also cause tsunamis.
After a shock, the shock wave spread over the sea in an expanding circle to a long distance, just like the wave generated by the falling of a pebble into a shallow pool.
Tsunamis have a wavelength greater than the maximum depth of the ocean, and their orbital motion is not much blocked near the seafloor, so waves can propagate through the ocean regardless of its depth.
A tsunami is a destructive wave generated by an undersea earthquake, volcanic eruption, undersea landslide or meteorological change. The wave speed of a tsunami can reach 700-800 kilometers per hour and can cross the ocean in a few hours Wavelength can reach hundreds of kilometers, can travel thousands of kilometers and little loss of energy.
In the vast ocean, the wave height is less than one meter, but when it reaches the coastal shallow water zone, the wavelength shortens and the wave height increases sharply, up to tens of meters, form