摘要:The PREPARTOI project ("Prevention and research for the mitigation of the tsunami risk in the French territories of the Indian Ocean",the French acronym equivalent to . get-ready .), began in early 2010. The first stage of this integrated tsunami risk assessment project consisted in evaluating the tsunami hazard on La Réunion Island by collecting and synthesizing all available data aboutpast tsunamis and their effects. This first step was implemented through archive and field research during 2010. Seventsunami occurrences were identified as having impacted La Réunion Island between1883 (explosion of the Krakatauvolcano) and October 2010 (end of the field research). Allthese events had sources along the Indonesian margin and were triggered by earthquakes ofmagnitude higher or equal to Mw=7.7, affecting the island with maximal runups reaching 7m. These tsunamis mostly affected the harbors damagingmany boats, especiallyin 2004. Although historicallythe tsunami hazard is quite moderate on the island's coasts, the high concentration of people along the shore and in low elevation areas,highlights considerable stakes and high vulnerability resulting in significant risk, especially in Saint-Paul, a city which was completely flooded in 1883.
关键词:tsunamis; teletsunamis; I;ndian Ocean; La Réunion; catalog