Fig. 3: Transport of flocs and burial in the sediment bed.

Images are taken every 5 s with a GoPro 6 camera, allowing to track settled flocs. Flow direction from left to right. a Burial of an individual floc into a dune (experiment 10). b Burial of a cluster of flocs (experiment 13). c Burial of a string of flocs in the bed (c-1, c-2) and the subsequent re-entrainment into the water column (c-3, c-4) (experiment 13).