The Earth really did move during last month's massive Chile quake, which killed hundreds of people and left two million homeless. Researchers say cities and islands physically shifted west.
It is the nearest major city to last month's quake.
Researcher Ben Brooks said this happens with every quake but is usually too small to notice. This time, with a magnitude of 8.8, the scientists saw a great deal of movement.
The Chile quake was one of the strongest ever measured and the giant waves that followed left almost 500 confirmed dead and at least 260 others missing.
Towns and the infrastructure were shattered. Key industries such as fishing were hit. Chilean tycoon Sebastian Pinera faces a huge reconstruction challenge when he takes over the country's presidency on Thursday.