Henk Schuttelaars is full professor Applied Mathematics at Delft University of Technology. Using mathematical techniques (combining analytical and numerical methods), his research focuses on salt and sediment transport processes, trapping of sediments, and morphodynamic evolution of estuaries and coastal seas. Arnold Heemink is full professor Applied Mathematics at Delft University of Technology since 1993. For more then 30 years he worked on tidal modelling with a focus on the development of data assimilation methods for storm surge forecasting. More recently he also became interested in stochastic modelling and in Lagrangian methods to model transport processes using stochastic differential equations. Eric Deleersnijder is a reader with the Université catholique de Louvain, Louvain-la-Neuve, Belgium, a former part-time professor with Delft University of Technology and a honorary researcher with the Belgian Fund for Scientific Research (F.R.S.-FNRS). His research interests focus on the mathematical and numerical modelling on several components of the hydrosphere. Additional pieces of information may be found at www.ericd.be