Did quake or tsunami cause Fukushima meltdown?

Japan's nuclear safety agency today rejected a claim in British newspaper The Independent that the earthquake itself, not the subsequent tsunami, destroyed cooling systems leading to meltdowns at the Fukushima Daiichi nuclear plant.

"It is not correct," a spokesman for Japan's nuclear safety watchdog, the Nuclear and Industrial Safety Agency (NISA), told New Scientist.

[link to www.newscientist.com]