Recovery of historical flow direction based on particle orientation characteristics

The code is mainly written through MATLAB Live script, the benefit of Live script is that you can see the results of the code. The MATLAB version used here is 2023b, and if it is an earlier version, you may encounter problems, I have not tried it with an earlier version. Each folder corresponds to each figure in the paper, Dataset is the data used by the code, Sharecode is the common code used by each figure, GenerateImbricatedSurfaces.mlx is the code used to generate the artificial gravel beds.<br>The Dataset contains the flume gravel surfaces I-250b, II-240 from Aberle and Nikora (2006) and the river bed data (Wai-b) from Smart et al (2002). Please cite the corresponding literature if you use these two data.<br>Aberle, J., Nikora, V.I., 2006. Statistical properties of armored gravel bed surfaces. Water Resour Res 42, W11414-n/a. https://doi.org/10.1029/2005WR004674Smart, G.M., Duncan, M.J., Walsh, J.M., 2002. Relatively Rough Flow Resistance Equations. J Hydraul Eng ASCE 128, 568–578. https://doi.org/10.1061/(ASCE)0733-9429(2002)128:6(568)<br><br>

本代码主要通过MATLAB Live脚本编写，Live脚本的优势在于可实时呈现代码运行结果。本次使用的MATLAB版本为2023b，若使用更早版本可能会出现兼容性问题，笔者未在更早版本中开展过测试。每个文件夹对应论文中的一幅插图，Dataset文件夹存放代码运行所需的数据集，Sharecode文件夹存放各插图共用的通用代码，GenerateImbricatedSurfaces.mlx为用于生成人工叠瓦砾石床的代码。

本数据集包含来自Aberle与Nikora（2006）的水槽砾石床表面数据I-250b、II-240，以及来自Smart等人（2002）的河床数据（Wai-b）。若使用这两组数据，请引用对应文献。

Aberle, J., Nikora, V.I., 2006. 覆被砾石床表面的统计特性. Water Resour Res 42, W11414-n/a. https://doi.org/10.1029/2005WR004674
Smart, G.M., Duncan, M.J., Walsh, J.M., 2002. 相对粗糙流动阻力方程. J Hydraul Eng ASCE 128, 568–578. https://doi.org/10.1061/(ASCE)0733-9429(2002)128:6(568)