Systematic Organization of Inhibiting and Promoting Factors for Tsunami Evacuation and Comparison with Heavy Rainfall Disasters: A Review of Previous Studies after the Great East Japan Earthquake

Abstract

The factors that inhibit or promote tsunami evacuation are diverse and have been studied in many previous studies.In this study, we summarized the results of these previous papers by KJ method in order to overview the inhibiting and promoting factors of tsunami evacuation. In addition, we compared the inhibiting factors for tsunami evacuation with those for heavy rainfall disasters, using previous studies. The results revealed that: 1) the most common inhibiting factor is underestimation of tsunamis, and the most common promoting factors are recognition of information and advance preparedness; 2) some inhibiting factors do not have a corresponding promoting factor; and 3) differences in the characteristics of heavy rainfall disasters and tsunamis create differences in inhibiting factors for evacuation.