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Tsunamis start from any large, sudden displacement of water. This includes earthquakes, landslides, volcanic eruptions and the breaking of coastal ice, such as in glaciers or icebergs. Rarely, a large body from space, such as a meteorite, can cause a tsunami. Most often, tsunamis start from underwater earthquakes that happen along tectonic plate lines. Earthquakes that shift one side up or down significantly cause a sudden change in where that volume of water is located, which in turn creates a large wave. The wave then continues until it reaches land.
Effect of the 2004 Indian Ocean earthquake on Sri Lanka
Sponsored link. The devastating Tsunami a. Earthquakes are often created when two rigid tectonic plates, which are grinding against each other, suddenly rupture.
Boxing day , , one of the largest earthquakes in recorded history measuring 9 on the Richter Scale , struck just off Sumatra, Indonesia, in a fault line running under the sea. The rupture caused massive waves, or tsunamis, that hurtled away from the epicenter, reaching shores as far away as Africa. Some , people were killed and the livelihoods of millions were destroyed in over 10 countries.