RESIDENT PARTICIPATORY MONITORING OF SLOPE DISASTERS USING TILT SENSORS

: In recent years, due to the effects of climate change, slope disasters have frequently been occurring and causing severe damage in many places across the globe. To reduce the damage from slope disasters, residents need to correctly understand the hazards and protect themselves. In this study, we attempted to evaluate the risks of slope disasters in local residential areas and to analyze the residents' opinions gathered through a workshop on their participation in the monitoring of slope disasters using tilt sensors for prevention. As a result, the overview of the evaluation items for high-risk slopes and their contents was clarified, which had been tacit knowledge, as well as the structure of the local residents' concerns about the slopes and their expectations for monitoring utilizing tilt sensors to take evacuation action. To help solve the problems, we installed tilt sensors in areas with high risks of collapse, and we built a mechanism that allows the local residents to monitor the slopes and take evacuation actions. An alert is issued before a slope failure occurs, and it functions as an "evacuation switch", which leads to residents taking evacuation actions to protect themselves. It is expected that tilt sensor monitoring will be widely used in voluntary disaster prevention activities in the region.