Fig. 4

(a) and (b) show the number-based particle size distribution \(p_i\) and the volume-based particle size distribution \(p^v_i\) corresponding to all five conducted selfies combined. The dashed lines in (b) show that 88% of the sediment mass is accounted for by particles of size greater than 21 \(\upmu\)m. (c) Shows the measured shape descriptors, solidity S versus circularity C, with associated histograms, for all the five realized selfies combined.