2016 Volume 22 Pages 499-504
Although marine debris is a main environmental issue in coasts, total floating-litter and driftwood transport through rivers are still unclear. In this study, we carried out an automatic and continuous monitoring system for floating-litter transport in Mogami River and evaluated total floating-litter transport and driftwoods transport. The results indicated that the total floating-litter and driftwood transport in flood conditions was at least several hundred times that in low-flow conditions. Driftwood transport was about 10 % of the total floating-litter transport. To collect the floating-litter in rivers, we conducted 3D flow simulation for measure performance of a new design in which several fences are set at outer bank in rivers.
