Abstract
The tsunami of the 26th of December 2004 caused an unprecedented disaster in the Indian Ocean. In Sumatra, a third of Banda Aceh area has been destroyed and 70,000 people died. The Tsunarisque Program brings new considerations about the tsunami dynamic and damages intensity in this urban area: an original method of damages spatial analysis is based on field surveys and photo-interpretations. The first result is a very accurate cartography of the tsunami breaking that is shown by a steep drop of the damaging gradient around 2,7 km from the coast. The second is a new “macro-tsunamic” intensity scale based on special typologies of buildings and damages. This analysis is complemented by damages curves that give the statistical relations between mean damages intensities and wave heights. These results allow developing application in tsunami potential losses modelling.
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