ABSTRACT
Accurate measurement of sediment transport is required for many applications of water resources management, such as prediction of reservoir filling rates, quantification of contaminant transport, and assessment of morphodynamic stability. Physical traps and samplers are designed to obtain a sample of bedload particles transported into the measuring device during a known period. The main objective of the measurements is to derive bedload transport rates, either as a bulk quantity for a range of grain sizes or as fractional transport rates for given grain-size classes. Many passive acoustic measurements of bedload transport essentially record naturally generated signals, that is, the sound or vibration induced by moving bedload particles. An acoustic Doppler current profilers employs bottom tracking to measure the velocity of the instrument relative to the river bed. The United States Federal Interagency Sedimentation Project is widely recognized as a source for suspended sediment samplers with designs that have been thoroughly tested.
