INTORODUCING NEW TSUNAMI HAZARD INDEX BASED ON GLOBAL TSUNAMI HAZARD ASSESSMENT AND PROPOSING COUNTERMEASURES FOR EACH REGION

Abstract

 Based on the tsunami risk assessment on the global scale, by comparing the tsunami risks of each country or region, it is possible to preferentially identify areas requiring tsunami countermeasures. In order to achieve this, we conducted a tsunami hazard evaluation integrating the wave height and the propagation time of the tsunami, and newly introduced tsunami hazard indicators, considering tsunami countermeasures that are considered effective for each region . From the historical earthquake records, we selected 103 events in total for each area, and conducted tsunami numerical analysis. As results, it was possible to calculate the tsunami hazard value combining the wave height, the propagation time, and the number of tsunami incidents in each region, making it possible to quantitatively compare tsunami hazards in each region.