活発な土砂生産・土砂流出を考慮した洪水予測技術に関する研究

抄録

Systems that can predict rainfall runoff have incorporated improvements in weather survey and analysis technologies. Data on both water depth and stream bed height are needed to predict the water level in a river. However, most constructed forecasting systems in use now base their predictions on the movement of water without considering stream bed height. Furthermore, to manage the river environment, it is necessary to forecast sediment runoff. To develop a numerical simulation to predict flooding that considers sediment runoff, we compared observations with the analytical results obtained by improving existing models. We also showed the relationship between the drainage area and river channel width in a mountain area, considering the geology and type of vegetation in the valley, using a statistical technique.