tsunami, tsunami japan, tsunami in japan, tsunami reports today, tsunami warning

Tag: tsunami, tsunami japan, tsunami in japan, tsunami reports today, tsunami warning

Tsunami is a Japanese word with the English translation - "harbour wave". It is a series of ocean and water waves caused when a large body of water is displaced in an ocean or a large lake. It is usually triggered by earthquakes, volcanic eruptions and other underwater explosions.

The wavelength of a tsunami can range from 10 to 500 km and wave periods up to an hour. In the deep ocean, where the typical water depth is around 4000 m, a tsunami will therefore travel at around 700 kilometer per hour.

The amplitude (i.e wave height) of tsunamis that are generated by underwater earthquakes is determined by the amount by which the sea-floor is displaced. Similarly, the wavelength and period of the tsunami are determined by the size and shape of the underwater disturbance.

Travelling at high speeds, tsunamis can cover a large distance causing huge human and material loss to the country.