抄録
Quantity of Sediment transport from the rivermouth is not well known. However, it is very important in order to calculate sediment transport and beach profile change in coastal zone. Many research activities by using ADCP to estimate sediment transport quantity were made. However, it is difficult to conduct field observations by using ADCP at the flood. Then, in this study, sediment transport quantity form the Naka River in the Ibaraki prefecture was estimated by using ADCP, the turbidity meter, and STD. Furthermore, sediment transport off the rivermouth was observed. In conclusion, the sediment transport quantity due to suspended component was well estimated and it was carried to the direction of southwest, the port of Ooarai.
