Japan’s tsunami created large dunes on the ocean floor

The Tohoku-oki earthquake and tsunami brought unimaginable devastation to the coastal areas of Japan in March 2011. But as a new study in Marine Geology suggests, it also reshaped the ocean floor, forming large underwater dunes as the massive waves rolled into the eastern seaboard, and then slowly pulled away. » 1/17/13 5:00pm 1/17/13 5:00pm