2019 年 25 巻 p. 309-314
A discharge hydrograph and an inundation area were estimated during Kyushu-hokubu heavy rain in 2017 by numerical simulations with water level hydrographs as boundary conditions. The simulations were performed by a two-dimensional flood and inundation flow model. The model parameters were optimized with Experimental Design, Response Surface Methodology, and Particle Swarm Optimization. The simulated results were compared with the observed discharge, flood marker, and maximum inundation area. It showed that the model could reproduce flooding maker, discharge hydrograph and inundation area with reasonable accuracy.
