Impact of cross-reef water fluxes on lagoon dynamics: a simple parameterization for coral lagoon circulation model, with application to the Ouano Lagoon, New Caledonia - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Ocean Dynamics Année : 2015

Impact of cross-reef water fluxes on lagoon dynamics: a simple parameterization for coral lagoon circulation model, with application to the Ouano Lagoon, New Caledonia

Cristele Chevalier
Jean Luc Devenon
Marc Pagano
  • Fonction : Auteur
  • PersonId : 173214
  • IdHAL : marc-pagano
Gilles Rougier
  • Fonction : Auteur
  • PersonId : 957954
Jean Blanchot
  • Fonction : Auteur
  • PersonId : 957953

Résumé

This manuscript presents a combined experimental and numerical study of the impact of cross-reef fluxes on coral reef lagoon dynamics. The selected field site is the Ouano Lagoon (New Caledonia Island, France) in the South Western Pacific Ocean. Measurements of wave transformation above the reef and current profiles through passages and reef openings have been carried out during a 3-month survey. Data analysis reveals the preponderant roles played by both tides and waves on the lagoon dynamics. Based on field data, a simple parameterization of cross-reef fluxes is implemented in a coastal lagoon circulation model and a satisfactory agreement is found between parameterized model and field results. The model is thus used as a numerical experimental tool in order to analyse the cross-reef flows’ possible influence on a narrow lagoon dynamics. The results highlight the importance of cross-reef fluxes induced by wave breaking over the reef barrier on the whole lagoon circulation and water properties.
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Dates et versions

hal-01213079 , version 1 (07-10-2015)
hal-01213079 , version 2 (26-10-2015)

Identifiants

Citer

Cristele Chevalier, Damien Sous, Jean Luc Devenon, Marc Pagano, Gilles Rougier, et al.. Impact of cross-reef water fluxes on lagoon dynamics: a simple parameterization for coral lagoon circulation model, with application to the Ouano Lagoon, New Caledonia. Ocean Dynamics, 2015, pp.1-26. ⟨10.1007/s10236-015-0879-x⟩. ⟨hal-01213079v2⟩
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