DEFINITION OF TSUNAMI INUNDATION LIMIT BASED ON PROBABILISTIC ANALYSIS OF TSUNAMI RUNUP AND INUNDATION DISTANCE

Tsunami inundation maps provide information on the extent of the inundation and flow depth, which may be used mainly for evacuation. In addition, the Chilean National Service for Disaster Prevention and Response (SENAPRED for its name in Spanish, and formerly ONEMI) has designated all areas located higher than 30 m above sea level as safe zones (Zamora et al., 2020). However due to the lack of other probabilistic information, the current official tsunami maps (deterministic maps based on the worst-case scenario) together with the 30-m ground elevation criterion have been used for urban planning, restrictions for critical infrastructure, and even design of structures under tsunami forces. The objective of the present research is to define more realistic tsunami inundation areas and safe zones based on probabilistic analysis of tsunami runup and inundation distance to be used in urban planning and design of structures.