Bidisperse beds sheared by viscous fuids: Grain segregation and bed hardening

These files contain both raw and converted movies of the experiments for short (20 to 40 min)- and long-time (140 hrs) evolution of a bidisperse bed sheared by a viscous liquid, in order to analyze segregation rates, their evolution along time, their variation with the applied shearing, and the time evolution of creeping and bedload. In Addition, we uploaded Matlab script for processing images by applying the method presented by Houssais et al., Nat. Commun., 2015. which allows the detection of the grains in each image. Moreover, the scripts use the Kalman filter in order to assign a unique number to each grain that was previously detected in each image. With that, we acquired information such as instantaneous position, size of particles, and identification of each particle in each frame in .txt files