Abstract
The large tsunamis from the 9.0 magnitude earthquake that struck off the west coast of northern Sumatra early on Dec. 26, 2004 caused 300, 000 casualties. We carried out damage investigation in the west coast region of Aceh from January 18-22, 2005. In this report we classified damaged and non-damaged areas. There was a significant amount of damaged structures in these areas. The damage to the beach areas from tsunamis erosion and the back arc basin caused by the tectonic movement is described. Ideas for future countermeasures are also discussed.
