Tsunami Evacuation Problems in the Areas of the Large Variation of Daytime Population

Abstract

The variation of daytime population affects the performance of tsunami evacuation. This study comparatively studied two municipalities nearby Sendai city, whose mortality rates by the East Japan Great Earthquake Tsunami differed much from each other. In addition to the effect of increase and decrease of the daytime population, author discusses the road network which connects coastal area to high land, the preparedness for tsunami evacuation based on past tsunami experiences, the large seaport artificially excavated 40 years ago, the visibility of sea, and the difficulties to control the visitors who are in the commercial areas, in the swimming beach and on the roads.