Tsunami Evacuation Considering Regret Emotion

―Development of Regret Map―

Abstract

‘Tsunami Tendenko’ has been recently promoted as a principle of tsunami evacuation in Japan. However, ‘tsunami tendenko’ may cause psychological conflict such as “I could not go to help anybody though I could do so” or “I have come to help somebody though I should have evacuated alone”. This paper calls such a psychological emotion as ‘regret’ and claims that we should investigate critical issues and develop evacuation plan not only for minimizing the number of fatalities but also reducing the number of people who feels regret. Bases on the background mentioned above, we propose ‘regret map’ which provides information to support investigating problems concerning the practical evaluation plan in each field with unique local features such as ‘under which social conditions the area where residents faces regret would be larger’ or ‘how such an area can be reduced’. In addition, we show application cases to demonstrate how regret map brings implication in developing actual evacuation plans.