May 4, 2011

Tsunami

A Tsunami is a series of waves caused by a disturbance in a body of water. Such disturbances can be caused by earthquake, volcanic eruption, and any underwater explosions. Tsunamis can damage in two ways: hitting with a fast-traveling mass of water and (or)  drainage of a large mass of land.          

　
Everyday Wave
Tsunami (deep)
Tsunami (shallow)
Wavelength
100m / 330ft
200km / 120mi
20km / 12mi
Height
2m / 6.6ft
1m / 3.3ft
Incredibly high
Speed
Varies
800kmh / 500mph
80kmh / 50mph

Notice that the wave length of the tsunami is very long, which makes it very hard to detect before it reaches the shore.
File:Propagation du tsunami en profondeur variable.gif

Japan, along with other nations, has been suffering from tsunami. Recently, in March 11th, 2011, the Great East Japan Earthquake (Tohoku earthquake) caused an intense tsunami.
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1 comment:

  1. AnonymousSeptember 19, 2011 at 1:32 PM

    it was the worst day in history for the japanese people an visitors, i was sooo scared, i was on the tokyo bay in yokosuka , my car was rocked acrossed the street, i pray every day for their recovery! Sincerly Desiree Bernert

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