Flood Disaster Losses and Risk Assessment of Coastal City (PAP014352)

Código

PAP014352

Autores

ZHOU Zhihua, LI Zhen, GU Xiaorong, LIU Hongyan

Tema

Flood risk management in mega cities

Resumo

As a large coastal city in northern China, Tianjin is located in Haihe River Basin tail, has the history reputation of nine river downstream and Important towns at sea, but it also reflects the special position of vulnerability to flooding. In the south?according to the coastal features of flood storage development and the downstream tidal backwater status?established one and two dimensional coupled model to simulate the flood dynamic evolution process in river and flood storage. On the basis of risk population distribution and economic statistics, used flood damage level fuzzy recognition theory and GIS overlay analysis techniques, multi-dimensional assessed the flood damage in accordance with the principle of maximum membership principle and closeness respectively, determined the level of flood damage, objectively assessed the floods scale and severity, which provided as reference for flood prevention and scheduling, disaster relief and flood risk management.