Sediments and their transport are imperative to the health of river systems. The complexity of sediment transport is characterised by a series of mechanisms, which depend on a large number of parameters. Gravel-bed rivers are the most prevalent river types in New Zealand. When a gravel-bed river is supplied with and transports grains of a wide range of sizes, sorting mechanisms take place on the riverbed.
The project aims to shed more light into how a complex gravel-bed topography, such as an armour layer and its associated stages of development and destruction, interacts with the near-bed turbulence at the grain scale.
Work is carried out in our laboratory. We are also able to obtain data in the field.
The research is being conducted under Marsden Fund contract UOA1412, administered by the Royal Society of New Zealand.