Basic Research for the Estimation of Flood Damage Costs using Global Coastal Dike Information - Tokyo Bay and Ise Bay -

Abstract

 According to the 5^th IPCC Assessment Report, the global average sea level is expected to rise owing to the global warming effect. For the high-level warming scenario, the average sea level is expected to rise up to 0.82 m. Therefore, risk assessments of flood damage costs resulting from sea level rises are important. Herein, global coastal dike information was extracted using satellite images and digital surface models based on the coastal dike distribution methods proposed in previous research. Furthermore, to evaluate the effect of dike information on the risk assessment, we simulated the influence of flood damage in Tokyo Bay and Ise Bay by establishing the dike height. The results of this study are as follows: 1) Dike information was generated on a global scale. 2) The influence of flooding and flood damage costs were estimated based on flood simulations using global coastal dike information.