| Main purpose of this study is developing the method to derive bedload discharge with an Acoustic Doppler Current Profiler (ADCP) in actual river during flooding. For actual measurement with ADCP mounted on a boat、accuracy of the boat speed value is as important as that of measured value by ADCP. Recently、a Wide Area DGPS (WADGPS) have developed、which can position the location with same accuracy in any countries of the world. In this paper、authors introduces one of the results of WADGPS、as well as the results of bedload discharge with three different methods、such as ADCP、sediment samplers、and conventional equation. Authors confirmed applicability of WADGPS、and compared the three different methods regarding bedload discharge. Unfortunately、sediment sampler is slightly difficult to be justified as appropriate measurement tools、though ADCP and conventional equation are not in the case. Finally authors proposed the method for the bedload discharge measurement in developing countries. |
