沖積地の安定な流路幅に関する既往研究の総説の試み

抄録

This paper is an attempt of comprehensive review of research on stable river channel geometry to consider the recent attention to stable channel width against various discharges. Not only regime concepts, tractive force (theoretical) approaches but also extremal hypothesis approaches were reviewed. It was highlighted out of the reviewed papers there might be a kind of constant aspect ratio (B/h) regardless the channel (discharge) scale when their width - discharge relation followed the regime equation form. Such B/h can be regarded quite significant to quantify the stable channel geometry. It was reviewed that both the empirical and analytical approaches has shown certain ways to evaluate the specific B/h to support the stable channel forming. However, the variability of B/h according to both theoretical and empirical ones is found still to be significantly large around one order, which limits the effectiveness to predict a stable channel width.