Study on Effective Disaster Information on Appropriate Evacuation Action and Inhabitants Consciousness for Disaster Prevention

Abstract

A questionnaire survey was conducted in Miyazaki City after T0514 in order to investigate effective disaster information that derives an evacuation attitude. The disaster information, that enables inhabitants to easily understand their crisis of disaster outbreak and the serious situations in their residential district, is important to motivate their evacuation action. As pointed out in several disaster investigations, real time images of flood scene are effective for inhabitants to understand disaster conditions such as the crisis of river water flooding in their district. Further more, it is also effective to warn the evacuation directly through official public information. On the other hand, many experiences of flood disaster in the past do not derive the appropriate evacuation action when inhabitants could not get sufficient disaster information. In this case, inhabitants tend to evaluate their disaster risk too little, and some of them miss their evacuation action in appropriate time. Many inhabitants require the disaster information such as the real time image of a flood scene, a level of disaster risk and predicted values of the amount of rainfall and river water level. In this questionnaire survey, a large number of inhabitants require a construction of flood control facilities in future against a huge flood disaster exceeding a design discharge. On the other hand, the government tries to increase the disaster protection potential against an unexpected disaster exceeding a design level by applying a various flood control strategies to a conventional flood control project. It is important to make a common understanding for mitigation strategies against a huge disaster that exceeds a design level largely in future.