Investigation using simple mathematical models of the effect of tidal currents and waves on the profile shape of intertidal mudflats

Schematic mathematical models have been used to investigate the relationshi p between hydrodynamic forcing, sediment transport and the equilibrium prof ile shape of intertidal mudflats. The approach involves representation in t he model of the main physical processes. The model is then applied to itera tive calculations of sediment transport and morphological change which proc eed until a stable situation is achieved. Relationships are established bet ween the shape of the equilibrium profile and external factors such as tida l range, sediment supply and wave conditions. Large tidal ranges are shown to correspond to steeper mudflats, a high sediment supply leads to a less s teep mudflat and the action of waves is shown to lead to a mudflat profile which is concave upwards. (C) 2000 Elsevier Science Ltd. All rights reserve d.