茨城県神栖市におけるＬ２津波想定と住民アンケートに基づく津波避難リスクの評価

抄録

In order to evaluate tsunami evacuation risk in Kamisu city, we conducted questionnaire survey on all households belonged to neighborhood associations in the city and spatial analyses using the data of submergences by the level 2 tsunami which was supposed by Ibaraki prefectural authorities. Based on the survey data, the citizens' characteristics of tsunami evacuation action were grasped. And, by using GIS, evacuation routes that might be wholly or partly inundated were identified to measure distances of the sections. Then, we estimated time series transition of a number of evacuees who had not escaped from the submerged area, and examined the effects by improving percentages of evacuation and immediately start and evacuation routes.