In order to devise an appropriate tsunami management plan, it is essential for local governments to understand the level of awareness that residents have regarding the danger of tsunamis. The authors surveyed the residents in Onjuku Town, Chiba, focusing the questionnaire on the residents' risk perception and on their most likely evacuation options and examined the answers using spatial data. The result shows the following: 1) risk perception is strongly related to spatial factors, 2) timing of evacuation by the residents is not so much related to the residential locations, and 3) some residents intend to choose dangerous routes to evacuate.
