Tsunami

Second Secondary B
BY: Carmen Issa
Aya Husseini

INTRODUCTION:
Tsunami in any case called seismic sea swing, or tidal wave, catastrophic nautical wave, usually caused by a submarine earthquake occurring little than 50 kilo pulses (30 miles) beneath the seafloor with a magnitude greater than 6.5 on the Richter scale. Under irrigate or coastal landslide or vol piece of assic eruptions also may cause a tsunami. The term tidal wave is more stagly used for such a wave, but it is a misnomer, for the wave has no connection with the tides.
later the earthquake or other generating impulse, a train of sample, advancing oscillating waves is propagated great distance of the ocean surface in ever-widening circles, much like the waves produced by a pebble falling into a shallow pool. In deep water, the wave-length are enormous, about ampere-second to 200km and the wave height are very small, only 0.3 to 0.6 meter (1 to 2 feet). The resulting wave steepness ranges between 3/2,000,000 and 6/1,000,000.
DEFINITION:
A tsunami (plural: tsunamis or tsunami; from Japanese: ??, lit.



harbor wave; English pronunciation: /su??n??mi/ soo-nah-mee or /tsu??n??mi/ tsoo-nah-mee), also called a tsunami wave train, and at virtuoso time incorrectly referred to as a tidal wave. It is a series of water waves caused by the displacement of a astronomic volume of a body of water, usually an ocean, though it can occur in large lakes. Tsunamis are a frequent occurrence in Japan; approximately 195 events have been recorded. owe to the immense volumes of water and the high energy involved, tsunamis can liquidate coastal regions.

Earthquakes, volcanic eruptions and other underwater explosions (including detonations of underwater atomic devices), landslides glacier calving and other mass movements, meteorite ocean impacts or alike impact events, and other disturbances above or below water all have the potential to generate a tsunami.
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