understanding of tsunami

The term tsunami comes from the Japanese. Tsu means "harbor" and nami means "wave", so that the tsunami can be interpreted as "harbor wave." This term first appeared among Japanese fishermen. Because the wavelength of the tsunami is very large, while in the middle of the sea, the fishermen do not feel any of this wave. But upon arriving back to port, they found the area around the port were badly damaged. Therefore they concluded that the tsunami waves occur only in the area around the port, and not in the middle of the ocean deep. tsunami Tsunami is a very large water waves generated by a variety of disorders in the bottom of the ocean. These disorders may include earthquakes, shifting plates, or volcanic eruption. Tsunamis are not visible while still being away at sea, but once they reached the shallow, fast-moving wave will be getting bigger. Tsunamis are also often mistaken for a tidal wave. This is because when it reaches the mainland, this wave is more like a high tide than like regular waves that reach the coast naturally by the wind. But the actual tsunami wave was not related to the events of the tides. Therefore, to avoid misunderstanding, oceanography experts often use the term seismic sea waves (seismic sea wave) to refer to the tsunami, which is scientifically more accurate.
Causes of Occurrence of Tsunami
 Tsunamis can be triggered by a variety of disorders (disturbance) large-scale sea water, such as earthquakes, shifting plates, the eruption of volcanoes under the sea, or the collision of celestial bodies. Tsunamis can occur when the sea floor moves suddenly and had a vertical displacement.

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