Potential mechanisms for the salt marsh recession on Sturgeon Bank

South of Vancouver, Canada, at the western front of the Fraser Delta lies Sturgeon Bank. The marsh on this intertidal area supports migratory birds and salmon, and it is part of the coastal protection of the city of Richmond. The marsh has faced severe recession of up to 500 m between 1989 – 2011 after having been stable for over 50 years. This...

Numerical modelling of the growth of offshore sand waves: A Delft3D study

Offshore sand waves of several meters high and hundreds of meters long are formed in shallow seas due to the tidal currents. These sand waves can, amongst others, influence the burial depth of cables of offshore wind farms and obstruct navigation channels. For the Far Large Offshore Wind programme (FLOW), one of the goals of Deltares is to...

Bio-physical impacts on fine sediment dynamics in an idealised Wadden Sea basin

This research has focussed on the identification of the relevant processes behind the long-term fine sediment dynamics. Three main influences were considered: the tide, wind waves and biological stabilization/destabilization. The study was performed by means of computational modelling, within the process-based model, Delft3D. By modelling...