Communication Dans Un Congrès Année : 2023

ON THE IMPACT OF HEADLAND BYPASSING ON SHORELINE CHANGE IN A ONE-LINE MODEL

Elsa Durand
  • Fonction : Auteur
Vincent Marieu
Deborah Idier
Arthur Robinet
Thomas Guerin

Résumé

The knowledge of future long-term sandy shoreline evolution is necessary for sustainable coastline management. However, the impact of sediment transport due to headland sand bypassing is not yet well addressed in shoreline models. This work aims at implementing a parametric expression for sand bypassing in the reduced complexity shoreline model LX-Shore. The parametrization of the wave-forced sediment bypassing around an isolated headland developed by McCarroll et al. (2021) is implemented. Considering an idealized configuration of a 300-m long, initially straight, sandy coast with a rectangular headland, results show that headland sand bypassing has a substantial impact on the downdrift (updrift) erosion (accretion) pattern and magnitude. Our simulations imply that taking into account bypass transport in long-term shoreline models such as LX-Shore could provide new insights into coastal embayment changes.

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Dates et versions

hal-04265962 , version 1 (31-10-2023)

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Elsa Durand, Vincent Marieu, Bruno Castelle, Deborah Idier, Arthur Robinet, et al.. ON THE IMPACT OF HEADLAND BYPASSING ON SHORELINE CHANGE IN A ONE-LINE MODEL. Coastal Sediments 2023, Apr 2023, New Orleans, United States. pp.1364-1371, ⟨10.1142/9789811275135_0126⟩. ⟨hal-04265962⟩
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