Abstract
To realize more accurate measurements for pollutant loads in an urban river, in the present study, a high-resolution, acoustic Doppler current profiler (HR-ADCP) was used to measure the vertical distributions of current and SS in an urban river under rainy conditions. The field measurements with the bottom-mounted HR-ADCP were carried out at the downstream point of the Oohori River, one of main inflow rivers in Lake Teganuma. The observed results show that characteristic vertical structures of the current and SS appear in hydrologic events and then the vertical distribution of SS flux in the streamwise direction vary considerably in rising and falling stages. With the HR-ADCP measurements, we grasp the temporal variation for the dependence of the erosion rate of sediments on flow conditions.
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