A 3D numerical study on the tidal asymmetry, residual circulation and saline intrusion in the Gironde Estuary (France)

Pham Van Bang, Damien, Phan, Ngoc Vinh, Guillou, Sylvain et Nguyen, Kim Dan. 2023. « A 3D numerical study on the tidal asymmetry, residual circulation and saline intrusion in the Gironde Estuary (France) ». Water, vol. 15, nº 23.

Prévisualisation

PDF Pham-Van-Bang-D-2023-28178.pdf - Version publiée Licence d'utilisation : Creative Commons CC BY. Télécharger (6MB) | Prévisualisation

Résumé

A full 3D numerical model is used for studying tidal asymmetry, estuarine circulation, and saline intrusion in the Gironde estuary. The model is calibrated and verified using the data measured during two field surveys in the Gironde estuary. Harmonic analysis of numerical results is proposed to understand how the superposition of M2, M4 and M6 components generate a complex estuarine circulation and salinity intrusion in the Gironde estuary. The numerical results show that the M6 component plays a significant role as important as the M4 one in modifying the nature of tidal asymmetry, especially in the Gironde upper estuary. In this case, the use of the phase lag between M2 and M4, neglecting M6, to predict the tidal asymmetry nature could produce errors. The effect of asymmetrical tides on saline intrusion and residual circulation is specifically discussed here.

Type de document:	Article publié dans une revue, révisé par les pairs
Professeur:	Professeur Pham Van Bang, Damien
Affiliation:	Génie de la construction
Date de dépôt:	18 déc. 2023 19:07
Dernière modification:	08 janv. 2024 20:01
URI:	https://espace2.etsmtl.ca/id/eprint/28178

Actions (Authentification requise)

Dernière vérification avant le dépôt