Recent Perceptions of Volcanic Hazard-Related Information in Japan: Expectation of Eruption Predictability and Acceptance of Uncertainty

In this study, recent perceptions of volcanic hazard-related information in Japan were investigated through an Internet questionnaire survey administered via the Internet following the 2018 volcanic eruption at Kusatsu-Shirane. The survey was focused on the change in perceptions over the course of two years, following after a 2016 survey. Additional perceptions were investigated, such as the respondents’ perceptions of eruption predictability and acceptance of uncertainty. The results of 2018 survey indicated that interest in volcanoes led to greater disaster and evacuation awareness compared with those of the 2016 survey, excessive expectations for eruption predictability decreased from 2016 to 2018. One-half of the respondents considered active information openness from experts to be of a high priority and accepted the uncertainty of hazard information.