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Tsunamis or tsunami are gigantic waves that have a large volume of energy that occur in the oceans.
These waves are caused by the movement of tectonic plates located below the oceans. The denser oceanic plates slide under the less dense continental plates in a process that is called subduction.
These maritime earthquakes, also known as tidal waves, displace large amounts of water, forming one or more waves (tsunamis) that can hit the shores of the oceans, causing disasters.
The strength of a tsunami occurs because of its amplitude and speed. As the wave approaches land, its height increases and its speed decreases.
Tsunamis can reach waves up to 30 meters high, with strong destructive power. These large waves are the result of the action of gravity on the movement of the water body.
Other factors that can trigger a tsunami are underwater landslides. Like volcanic eruptions, they occur as large volumes of sediment and rock move and redistribute at the bottom of the sea, increasing the volume of water.
Tsunamis left in history
FLORES ISLAND / INDONESIA
HOKAIDO / JAPAN
JAVA / INDONESIA
See the chart showing how a tsunami forms