Experimental dataset on basal stresses and seismic signals generated by granular flows moving on a 3D-printed bumpy substrate

This dataset provides the data supporting the experimental study of granular flows moving on a 3D-printed bumpy substrate considering the response of basal stresses and seismic signatures.

S1_video clips_the side-view of the kinematic behaviors of the granular flows tracked by a high-speed camera.

S2_data_stress and seismic signals measured at the instrumented plate

S3_data_example of velocity fields downstream and normal to the baseS4_data_propagation features of the flow characterized by basal stresses and seismic signalsS5_data_variations of the depth-averaged velocity of the granular flows and corresponding nondimensionalized downslope velocity profilesS6_data_profiles of the velocity of the granular flows normal to the base along with their depth-averaged velocities in the basal layersS7_data_ nondimensionalized shear rates of the granular flows for various particle diameters S8_data_depth-averaged shear rates and corresponding inertial numbers for granular flows with different particle sizesS9_data_the mean normal stress and shear stress and stress fluctuations normal and tangential to the baseS10_data_characteristics of seismic signals in terms of peak amplitude, mean envelope, seismic deviation factor, and the signal mean frequencyS11_data_effective basal friction coefficient and equivalent friction coefficient as functions of particle diameterS12_data_relationships between nondimensionalized normal stress fluctuations and nondimensionalized basal vertical velocity, inertial number, effective basal friction coefficient and equivalent friction coefficient of the flows.S13_data_seismic deviation factor as functions of nondimensionalized normal stress fluctuations, inertial number, effective basal friction coefficient and equivalent friction coefficient

S14_data_Comparison of effective basal friction coefficient μ_b and that scaled by the nondimensionalized basal vertical velocity.