Experimental Study of Tsunami Inundation in Coastal Urban Area

While the upgrading of the land use and the expanding underground space use are being advanced, a high risk is being caused in the coastal area. The aging of coastal protection facilities which have been maintained after the Typhoon Ise-wan, and the increasing of the external force as the abnormal sea level and occurring of the stronger typhoon by the Global warming have become severe issue. The purpose of this research is to evaluate the risk of flood and inundation in the coastal urban area. The experiment was conducted on the compound urban model in the metropolitan area where the building existed together with the underground facilities. The Great Kanto Earthquake Tsunami was selected as the input condition of the flood disaster. As the results, it has been understood that the risk of tsunami inundation is very high not only on the ground also in an underground space for evacuation in compound urban area