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TSUNAMI

A tsunami (plural: tsunamis or tsunami; from lit. "harbor wave English pronunciation:, also called a tsunami wave train, and at one time incorrectly referred to as a tidal wave, is a series of water waves caused by the displacement of a large volume of a body of water, usually an ocean, though it can occur in Tsunamis are a frequent occurrence in Japan; approximately 195 events have been recorded. Owing to the immense volumes of water and the high energy involved, tsunamis can devastate coastal regions.
and other (including detonations of underwater and other, and other disturbances above or below water all have the potential to generate a tsunami.
The historian was the first to relate tsunami to but the understanding of a tsunami's nature remained slim until the 20th century and is the subject of ongoing research. Many early, and texts refer to tsunamis as "seismic sea waves."
Some conditions, such as deep that cause, can generate a, called a which can raise several metres above normal levels. The displacement comes from low within the centre of the depression. As these reach shore, they may resemble (though are not) tsunamis, inundating vast areas of land.
Etymology and history

The Russians of, with their ships tossed inland by a tsunami, meeting some Japanese in 1779 The term tsunami comes from the Japanese composed of the (tsu) meaning (nami), meaning " (For the plural, one can either follow two ordinary English practice and add an s, or use an invariable plural as in the Japanese.)
Tsunami are sometimes referred to as tidal waves. In recent years, this term has fallen out of favor, especially in the scientific community, because tsunami actually have nothing to do with The once-popular term derives from their most common appearance, which is that of an extraordinarily high. Tsunami and tides both produce waves of water that move inland, but in the case of tsunami the inland movement of water is much greater and lasts for a longer period,...