太田川放水路を事例とした河口干潟の設計・管理方法の枠組みに関する研究

抄録

Based on existing various kinds of knowledge, we have considered a framework of the way of design and management of estuarine tidal flats. In the Ota River Floodway, estuarine tidal flat was designed in three types of cross section and was completed on March in 2010. We surveyed the change of landform and bed material and found that the pattern of change was different in every cross section. Sand was gradually piled up at the area where the gradient changed, eroded in the flood on July in 2010, and was piled again. Behind the band of sand, fine grained soil was piled up. We considered the mechanism of these changes and the effect of microtopography for physical environments and creature.