Articles | Volume 8, issue 2
Research article
06 May 2020
Research article |  | 06 May 2020

Emerging crescentic patterns in modelled double sandbar systems under normally incident waves

Giovanni Coco, Daniel Calvete, Francesca Ribas, Huib E. de Swart, and Albert Falqués

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Cited articles

Aagaard, T.: Multiple-bar morphodynamics and its relation to low-frequency edge waves, J. Coastal Res., 7, 801–813, 1991. a
Bowen, A. J. and Inman, D. L.: Edge waves and crescentic bars, J. Geophys. Res., 76, 8662–8671, 1971. a
Brivois, O., Idier, D., Thiébot, J., Castelle, B., Le Cozannet, G., and Calvete, D.: On the use of linear stability model to characterize the morphological behaviour of a double bar system. Application to Truc Vert beach (France), C. R. Geosci., 344, 277–287, 2012. a
Caballeria, M., Coco, G., Falqués, A., and Huntley, D. A.: Self-organization mechanisms for the formation of nearshore crescentic and transverse sand bars, J. Fluid Mech., 465, 379–410, 2002. a, b
Calvete, D., Dodd, N., Falqués, A., and van Leeuwen, S. M.: Morphological Development of Rip Channel Systems: Normal and Near Normal Wave Incidence, J. Geophys. Res., 110, C10006,, 2005. a, b, c, d
Short summary
Sandbars are ubiquitous features of the surf zone. They are rarely straight and often develop crescentic shapes. Double sandbar systems are also common, but the possibility of feedback between inner and outer sandbars has not been fully explored. The presence of double sandbar systems affects wave transformation and can result in a variety of spatial patterns. Here we model the conditions, waves and initial bathymetry that lead to the emergence of different patterns.