細粒土砂動態観測により明らかになった涸沼川流域の細粒土砂供給特性

抄録

In this study, we measured the amount of micro-fine sand at many gauging stations in the Hinuma River Basin. As the result, we found that 1) we grasped the amount of micro-fine sand in river basin through simultaneous measurement at many gauging stations that located corresponding to the sub-river basin appropriate for sand supply, 2) the amount of micro-fine sand supplied from sub-river basin that has barren lands is too much since it differs among sub-river basins in the Hinuma River Basin, 3) the amount of sand supplied depends on flood characteristics in sub-river basins that supply much sand, 4) micro-fine sand are supplied from barren lands. Moreover, we will estimate the sediment discharge / catchment area / yearly sediment yield corresponding to land use/ that is available for the prediction of the sediment yield by making the data base of flood flow and relation of Q-Q_s clear using many observed data in near future.