Tsunami

 A tidal wave (/(t)suːˈnɑːmi, (t)sʊˈ-/(t)soo-NAH-mee, (t)suu-; from Japanese: 津波, lit. 'harbour wave', articulated [tsɯnami]) is a progression of waves in a water body brought about by the dislodging of a huge volume of water, for the most part in a sea or a huge lake. Quakes, volcanic ejections and other submerged blasts (counting explosions, avalanches, glacial mass calvings, shooting star impacts and different unsettling influences) above or underneath water all can possibly produce a tsunami. Unlike typical sea waves, which are created by wind, or tides, which are produced by the gravitational draw of the Moon and the Sun, a tidal wave is created by the uprooting of water by an enormous occasion. 

Torrent waves don't look like ordinary undersea flows or ocean waves in light of the fact that their frequency is far longer. Rather than showing up as a breaking wave, a wave may rather at first take after a quickly rising tide. For this explanation, it is regularly alluded to as a flowing wave, albeit this use isn't supported by mainstream researchers since it may send the mixed signal of a causal connection among tides and tsunamis. Tsunamis for the most part comprise of a progression of waves, with periods going from minutes to hours, showing up in a purported "wave train." Wave statures of many meters can be produced by huge occasions. Albeit the effect of waves is restricted to waterfront regions, their ruinous force can be tremendous, and they can influence whole sea bowls. The 2004 Indian Ocean wave was among the deadliest cataclysmic events in mankind's set of experiences, with something like 230,000 individuals killed or missing in 14 nations lining the Indian Ocean.