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Hazard and Risk Evaluation Research Division
Tsunami Engineering
Anawat Suppasri (Associate Prof.)


Research summary


Fragility functions for building and boat by the great tsunami event such as the 2011 Great East Japan tsunami were developed by applying advanced statistical methods and consideration of impact of flow velocity and floating debris for better accuracy of the risk assessment.

Fragility surfaces representing the probability of reaching or exceeding “collapse” for the affected
wooden buildings in Kesennuma, during the 2011 Japan Tsunami with and without considering
impact from floating debris (Upper and lower figure).
Individual points represent the expected probability for each individual building, given the tsunami
flow depth, and velocity.
Loss functions of maximum tsunami height and flow velocity based on data of the 2011 Japan
tsunami for the whole region for vessels weighing less than 5 tons and with outboard motors