PRESUMPTION AND INSPECTION FOR INUNDATED AREA USING A GLOBAL COASTAL DIKE INFORMATION -Focused on the coastal area of Japan, Vietnam and China-

Abstract

 According to the 5th IPCC Assessment Report, the global average sea level is expected to rise owing to the global warming effect. For the worst-case warming scenario (RCP8.5), the average sea level is expected to rise up to 0.82 m. Therefore, global coastal dike information is important to estimate of inundated area due to storm surge, tide level and sea-level rise. Therefore, the precision of the simulation results was inspected at Ise Bay, Tokyo bay, Viet Nam and Chinausing global coastal dike information. The results of this study are as follows: 1) Global dike information was generated on a global scale except for the Arctic Ocean coast and Antarctica. 2) Based on the comparison with a hazard map and inundation experience map, a reasonable validity of the flood simulation in Tokyo bay and Ise Bay were indicated. 3) It was found that the global dike information can be used for a prediction of inundated areas across Japan. 4) Features of inundated areas were investigated by using land use information in Viet Nam and China.