活断層情報を考慮した防災対策と住民の意識構造

Abstract

Active fault information has been more widely and closely researched, and extensive data have been collected. With the progress, earthquake disaster reduction measures based on active fault information should be examined. The purpose of this paper is to arrange disaster reduction measure cases that have been considered with active fault information, and to indicate problems and directions to promote disaster reduction measures based on a questionnaire survey. Disaster reduction measures based on active fault information are distinguished into three types : building restrictions, non-building restrictions, and risk communication. The questionnaire survey was carried out with residents of Yokosuka city. The questionnaire items concerned the recognition and perception of regional earthquake risk, the perception of general earthquake risk, the awareness of general disaster reduction measures, and the awareness of disaster reduction measures based on active fault information. The results show that there are also three factors in the perceptions of residents, which are building restrictions, non-building restrictions, and risk communication, and their measures may be implemented with the recognition of residents on the need for land use controls based on active fault information. Other analysis results indicate that earthquake risk perception is high, but there are no significant correlations between individual earthquake risk perceptions and the awareness of disaster reduction measures. To promote disaster reduction measures based on active fault information and earthquake risk, it is important that such awareness is connected.