Research results on sediment vibration characteristics are scarce, and knowledge the effect of particle size response is still limited. In this study, natural pebbles different heights—A, B C—were selected (hA < hB hC). Miniature acceleration sensors were installed inside pebble. Experimental methods used to measure process rough bed surface near-bed velocities simultaneously. The test show ...

A simple analytic model is presented relating local sediment transport capacity to variance in the transverse shear stress distribution in a stream channel. The model is used to develop a physically based conceptual model for the initiation of meandering in straight, bedloaddominated streams as a result of a feedback mechanism. The feedback maximizes the crosssectional shear stress variance and...