Recurrent neural network modeling of nearshore sandbar behavior

The temporal evolution of nearshore sandbars (alongshore ridges of sand fringing coasts in water depths less than 10 m and of paramount importance for coastal safety) is commonly predicted using process-based models. These models are autoregressive and require offshore wave characteristics as input, properties that find their neural network equivalent in the NARX (Nonlinear AutoRegressive model with eXogenous input) architecture. Earlier literature results suggest that the evolution of sandbars depends nonlinearly on the wave forcing and that the sandbar position at a specific moment contains ‘memory’, that is, time-series of sandbar positions show dependencies spanning several days. Using observations of an outer sandbar collected daily for over seven years at the double-barred Surfers Paradise, Gold Coast, Australia several data-driven models are compared. Nonlinear and linear models as well as recurrent and nonrecurrent parameter estimation methods are applied to investigate ...

• Type: Journal
• Year: 2007
• Where: NN
• Authors: Leo Pape, B. Gerben Ruessink, Marco A. Wiering, Ian L. Turner
• Keywords: Neural Networks, NN 2007, Nonlinear, Sandbar, Sandbar Positions