Data for manuscript: "Investigating the celerity of propagation for small perturbations and dispersive sediment aggradation under a supercritical flow"

This repository provides raw data corresponding to an aggradation experiment, needed to reproduce the findings of the manuscript "Investigating the celerity of propagation for small perturbations and dispersive sediment aggradation under a supercritical flow". A channel may be aggraded by overloaded sediment. In this paper we realize an aggradation experiment and determine the celerity at which an aggradation wave migrates. We also investigate the celerity of aggradation to the celerity of small perturbations, as quantified based on mathematical formulations. The celerities of the two kinds are correlated with each other. However, the celerity of small perturbations is larger than the other one, that is less than a few percent of the water velocity. The parameters of the performed experiment are as follows: Water discharge: 7 l/s Sediment feeding rate: 4.28×10-4 m3/s Initial sediment transport capacity of the channel: 1.33×10-4 m3/s Initial slope of the channel: 1.37% Particle size: 3.8 mm Particle density: 1443 kg/m3本仓库提供了一组淤积（aggradation）实验的原始数据，用于复现论文"Investigating the celerity of propagation for small perturbations and dispersive sediment aggradation under a supercritical flow"的研究结论。 明渠可因输沙过载发生淤积。本研究开展了淤积实验，测定了淤积波的传播速度；同时基于数学公式量化了淤积波速与小扰动（small perturbations）波速的关联关系。两类波速存在相关性，且小扰动波速大于淤积波速，后者仅为水流速度的百分之几以内。 本次实验的参数如下： 过水流量：7 L/s 输沙率：4.28×10^-4 立方米每秒 渠道初始输沙能力：1.33×10^-4 立方米每秒 渠道初始坡降：1.37% 泥沙粒径：3.8 mm 泥沙颗粒密度：1443 kg/m³