Pal Davidsen

Document Type

Conference Proceeding

Publication Date


Publication Title

Proceedings of 20th International Conference of the System Dynamics Society


System Dynamics Society


Sediment deprivation from dam installments contributes to beach erosion yet the underlying physical and economic factors linking them together have traditionally been isolated during regional planning. In order to gain a better understanding of the behavior of a managed beach system, a dynamic simulation model was developed incorporating physical and monetary factors influencing the amount of available beach sand. The Santa Barbara littoral cell was chosen as a case study to evaluate the feasibility of beach preservation goals under scenarios in which annual sand replenishment funding, sand prices, or sediment recovery from behind dams were limiting factors to available beach sand. Sources of model uncertainty included limited information on historical sand replenishment costs and true residence time of sand in the littoral cell. Results indicate that with ample sand replenishment funding and moderate annual sand loss assumed, a beach could be maintained at a desired width for several decades.


Beach erosion; Beach nourishment; California – Santa Barbara; Coastal processes; Coastal zone management; Computer simulation; Model-integrated computing; Sand replenishment; Sediment; Shore protection; Simulation model


Civil and Environmental Engineering | Civil Engineering | Computational Engineering | Environmental Engineering | Environmental Sciences | Geotechnical Engineering | Natural Resources and Conservation | Natural Resources Management and Policy




Additional editors:

Edoardo Mollona

Vedat Diker

Robin Langer

Jennifer Rowe

Location: Palermo, Italy

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