Numerical Study on Measures for Protecting the Go-Cong Coastlines (Vietnam) from Erosion - Normandie Université Accéder directement au contenu
Article Dans Une Revue Water Année : 2022

Numerical Study on Measures for Protecting the Go-Cong Coastlines (Vietnam) from Erosion

Résumé

Every year, in the Vietnam Mekong Delta Coastal Zone (VMDCZ), erosions cause approximately 300 ha of agricultural land loss. Therefore, measures for shoreline protection are urgently needed. This paper discusses the impacts of protection measures in the Go-Cong Coastal Zone to prevent erosion/accretion processes, predicted by two numerical models, MIKE21-FM and TELEMAC-2D. Hard and soft measures have been proposed using breakwaters and sandbars, respectively. The simulations show that the erosion/accretion trends provided by both models are similar. For breakwaters, MIKE21-FM provides less accretion than TELEMAC-2D in areas extending over 300 m and 500 m from shorelines. However, for sandbars, MIKE21-FM shows higher accretion within areas extending over 500 m but less than 300 m. Sandbars cause higher accretion in a larger area, extending over 1000 m offshore. The simulation results allow us to propose two alternative measures: (1) a row of several breakwater units will be implanted at 300 m offshore. The length of each unit is 600 m, with a gap between two neighbouring units of 70 m and a crest elevation of 2.2 m above mean sea level (MSL). (2) A row of sandbar units will be posed at 500 m offshore, with a unit length of 1000 m and a gap between the two neighbouring units of 200 m. The crest elevation is fixed at MSL.
Fichier principal
Vignette du fichier
San_etal_Water_2022.pdf (11.29 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-03908126 , version 1 (20-12-2022)

Identifiants

Citer

Dinh Cong San, Nguyen Binh Duong, Nguyen Cong Phong, Le Xuan Tu, Damien Pham-Van-Bang, et al.. Numerical Study on Measures for Protecting the Go-Cong Coastlines (Vietnam) from Erosion. Water, 2022, 14 (23), pp.3850. ⟨10.3390/w14233850⟩. ⟨hal-03908126⟩
20 Consultations
19 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More