A group led by Associate Professor Yukino Sugiura of the University of Toyama clarified the relationship between roof snow-related accidents and meteorological factors in Toyama Prefecture, based on previous research in Yamagata Prefecture.Based on the meteorological information of "daily maximum temperature" and "snowfall amount for the past 7 days up to the previous day", warning standards for roof snow-related accidents were created.
Snow and ice disasters occur all over the country every year, and roof snow-related accidents account for the majority.Roof snow-related accidents have been increasing in Toyama Prefecture in recent years.Many of the studies focusing only on roof snow focused on the slipperiness of roof materials and other factors. There was very little other than research.
Therefore, the research group focused on the prediction of danger by approaching the danger of roof snow from weather factors in Toyama Prefecture.First, the relationship between the number of accidents and the number of accidents was analyzed using the daily maximum temperature and the amount of snowfall for 7 days for the whole of Toyama Prefecture.Regarding the relationship between the number of accidents and the daily maximum temperature, the number of accidents was high when the daily maximum temperature was several degrees Celsius.In addition, the number of accidents and the amount of snowfall over the seven days show that the number of accidents is high when there is a large amount of snowfall over the seven days.
Next, we calculated the degree of risk of occurrence, which is how many accidents occur under certain weather conditions, and created caution criteria using the daily maximum temperature and the amount of snowfall for the past seven days.In Toyama Prefecture, the amount of snowfall for the seven days corresponding to the high daily maximum temperature of the warning standard is also large.One of the reasons for this is that most of the snow-related accidents in Toyama Prefecture were caused by falls from roofs, and the need for snow removal was a strong human factor.
In this way, in Toyama Prefecture, where man-made factors are involved in roof snow-related accidents, there is a possibility that accidents can be prevented by human awareness, and it is important to raise awareness.
