Nihon Chinbotsu

From the Animeraider:
Japan is a seismically active country, so the occasional trembler isn’t anything that people get too worked up about. They happen and it’s unfortunate, but in general Japan is prepared. But there is one scientist who believes that he has found proof that a recent quake has triggered a cataclysmic event, and that within a year Japan will sink into the sea. Now if he can get anyone to believe him before it’s too late…
Also known as Japan Sinks, this is based on the award-winning novel and movie of the same name. It’s a well-written and complex story, and will seem like it’s about something else before it gets into the meat of things. Well worth the effort.