Active fault data have been more widely and closely investigated and extensive data have also been collected. However, there are only a few examples related to land use planning for disaster reduction measures based on active fault data. The purpose of this study is (1) to categorize the disaster reduction measures, and (2) to examine problems and important factors for promoting disaster reduction measures based on a questionnaire survey. The cases of the measures that are able to be distinguished included building restriction, nonconstruction restriction, and risk communication. The questionnaire survey was conducted with the residents of Yokosuka city. The results of analyses showed that disaster reduction measures based on active fault data tended to be approximately accepted. Other results indicated that as the public's understanding related to earthquake risk and risk mitigation measures increases, the awareness of risk reduction measures based on active fault data is promoted, and the objectives of disaster reduction measures would be realized.
This study examined workshop series for earthquake disaster reduction planning, and risk communication effects through these activities. Workshops were implemented in Koyadaira village of Tokushima prefecture in Japan, where is typical mountain village. These workshops focused on isolated area problems after big earthquake. Then questionnaire surveys were carried out among these participants. Results showed that workshop contents were received favorably by participants, and their incentive tended to be increased through these workshops. Another result indicated that motivations for disaster reduction were structurally different between multiple workshop participants and single workshop participants.
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