Aggregated morphodynamic modelling of tidal inlets and estuaries

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Aggregation is used to represent the real world in a model at an appropriate level of abstraction. We used the convection-diffusion equation to
examine the implications of aggregation progressing from a three-dimensional (3D) spatial description to a model representing a system as a
single box that exchanges sediment with the adjacent environment. We highlight how all models depend on some forms of parametric closure,
which need to be chosen to suit the scale of aggregation adopted in the model. All such models are therefore aggregated and make use of some
empirical relationships to deal with sub-scale processes. One such appropriately aggregated model, the model for the aggregated scale
morphological interaction between tidal basin and adjacent coast (ASMITA), is examined in more detail and used to illustrate the insight that this
level of aggregation can bring to a problem by considering how tidal inlets and estuaries are impacted by sea level rise.
Original languageEnglish
Pages (from-to)1-13
Number of pages13
JournalWater Science and Engineering
Issue number1
Publication statusPublished - 2020


  • Aggregation
  • Morphodynamic modelling
  • Sea level rise
  • Sediment transport
  • Temporal and spatial scales
  • Tidal inlet and estuary

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