Experimental dataset on how internal fluctuations modulate basal friction in dense granular flows: Evidence from flume experiments

Table S1. Source data underlying all figures in the main text, including processed datasets used for plotting and statistical analyses. Representative velocity profile statistics are provided, whereas complete particle-tracking-derived velocity datasets are omitted because of their large size and are available from the corresponding author upon reasonable request. Table S2 contains representative raw basal force records extracted from the steady-state intervals analyzed in this study. Movie S1 presents a side-view recording of a steady dry granular flow. Particle trajectories are overlaid for a subset of detected particles to illustrate flow kinematics. Due to the high particle density, only a subset is visualized to maintain clarity, and the trajectories are not intended to represent exhaustive particle tracking.