@article{fdi:010082689,
  title = {{M}orphodynamic modelling of beach cusp formation : the role of wave forcing and sediment composition},
  author = {{D}aly, {C}. {J}. and {F}loc'h, {F}. and {A}lmeida, {L}. {P}. {M}. and {A}lmar, {R}afa{\¨e}l and {J}aud, {M}.},
  editor = {},
  language = {{ENG}},
  abstract = {{A} field of beach cusps formed during a field experiment at {N}ha {T}rang {B}each, {V}ietnam, under accretive conditions. {T}he measured data was used to set-up morphodynamic simulations in {XB}each, which was able to simulate cusp formation from an initially long-shore uniform beach profile. {S}everal types of simulations were run in order to observe the resulting variation in mean cusp dimensions (length, depth and height), swash flow patterns, and sediment sorting. {B}oth time-constant ({JONSWAP}) and time-varying (measured) wave forcing conditions were superimposed on the measured tide. {I}n the former, four wave parameters were varied (wave height, period, direction, and spreading), while in the latter, the median sediment size and sediment composition were varied. {T}he wave period was found to primarily influence long-shore length scales, the wave height cross-shore length scales, and obliquely incident waves enhance all these dimensions particularly under narrow-banded conditions. {C}usps are not prominent if the wave energy is too low to effect significant onshore transport, if the wave angle of incidence and spreading are too large (effectively smoothing out swash perturbations), or if the sediment is too fine in relation to the wave conditions (dissipative beaches or highly erosive wave conditions). {C}oarse sediment generally tends to be located on cusp horns above the waterline, but is otherwise variable depending on cross shore location and tide levels. {A}s the {XB}each model results show large agreement with well-established norms, it may therefore be used to more rigorously study processes that help to initiate cusps in future work.},
  keywords = {{B}each cusps ; {O}nshore sediment transport ; {P}attern formation ; {W}ave ; forcing ; {S}ediment sorting ; {VIET} {NAM} ; {NHA} {TRANG}},
  booktitle = {},
  journal = {{G}eomorphology},
  volume = {389},
  numero = {},
  pages = {107798 [13 p.]},
  ISSN = {0169-555{X}},
  year = {2021},
  DOI = {10.1016/j.geomorph.2021.107798},
  URL = {https://www.documentation.ird.fr/hor/fdi:010082689},
}