Webin the wake of the christmas weekend tsunami in the indian ocean, one of the worst disasters in history, national geographic news examines the killer waves' causes and warning signsβ€”information.

Webtsunami waves travel fast.

Weban innocuous video of a man lounging on a beach in thailand chillingly captured the first waves of a tsunami that killed more than 200,00 people.

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Webon april fools day in 1946 an earthquake off the coast of the aleutian islands in alaska spawned a series of waves known as a tsunami.

The day after christmas in 2004 in the region would go down in history due to a devastating earthquake that erupted underneath the indian ocean.

Webin addition, just a few hundred metres away, the furious waves scoured away six feet (around 1. 8 metres) of sand from a section of beach, uncovering a handful of ancient boulders carved with animals and gods.

The cnn original series violent earth with liev schreiber explores harrowing weather events such as tsunamis.

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