Videos
linking 3D particle-scale structures to the evolution of gravel bed morphology
Bury Green Brook
Subsurface structure
Professor David Sear describes the subsurface composition of Bury Green Brook during a site visit with Dr Hal Voepel.
Bury Green Brook
Surface structure
This video of Bury Green Brook describes how morphologic changes produce variations in grain size and surface sediment structure.
Physical modelling
Chilworth flume operation
Initiation of a flume run showing the flow first filling the pools before inundating higher parts of the bed.
As the sheer stress increases alongisde the discharge the critical shear stress for the d50 grains is exceeded resulting in bedload movement.
At the upper end of the flume finer-grained materials are added to replicate conditions observed in Bury Green Brook.
In order to add sand evenly across the flume a mobile feeder system was utilised. Note how Dr Julian Leyland is kindly allowing Postdoctoral research assistant Dr Hal Voepel to push the heavy rig. #leadership