Earth & climate

2011 Tōhoku earthquake and tsunami

11 March 2011

The Tohoku earthquake was a megathrust earthquake of magnitude 9.0 to 9.1 that struck off the Pacific coast of north-eastern Japan, the strongest ever recorded in the country. It was caused by the sudden slip of the Pacific plate beneath the plate carrying northern Japan. The quake generated a huge tsunami that reached heights of many metres and swept inland along the coast of Tohoku, destroying towns and killing roughly eighteen thousand people, with others missing. The waves also flooded the Fukushima Daiichi nuclear plant, causing meltdowns and the worst nuclear accident since Chernobyl. Japan rebuilt coastal defences and revised its disaster policies in response.

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