Modeling the Bight of Benin (Gulf of Guinea, West Africa) coastline response to natural and anthropogenic forcing
(2021) In Regional Studies in Marine Science 48.- Abstract
The 400-km long coast of the Bight of Benin, formed by sand barriers and lagoons, is bordered to the east by the Niger River Delta and to the west by the Volta River Delta and is characterized by several coastal infrastructures, of which the most important are the deep water harbors of Lomé, Cotonou, and Lagos. In this study, an enhanced version of the CASCADE coastal evolution model was implemented in order to reproduce the evolution of the coast over the period 2000-2015, considering the presence of coastal infrastructure, inlets, and the reduced sediment influx from rivers. The model results showed simulated coastal response around the main coastal infrastructure in agreement with observed data. In addition, the validated model was... (More)
The 400-km long coast of the Bight of Benin, formed by sand barriers and lagoons, is bordered to the east by the Niger River Delta and to the west by the Volta River Delta and is characterized by several coastal infrastructures, of which the most important are the deep water harbors of Lomé, Cotonou, and Lagos. In this study, an enhanced version of the CASCADE coastal evolution model was implemented in order to reproduce the evolution of the coast over the period 2000-2015, considering the presence of coastal infrastructure, inlets, and the reduced sediment influx from rivers. The model results showed simulated coastal response around the main coastal infrastructure in agreement with observed data. In addition, the validated model was used to estimate the amount of sediment needed to control erosion through beach nourishment downstream of the harbors. The impact of reducing sediment input on coastal evolution was investigated through model parameterization of the influx at the boundary. Overall, the model may be a useful tool for improving regional coastal policies in the Bight of Benin.
(Less)
- author
- Abessolo, Grégoire O. ; Hoan, Le Xuan LU ; Larson, Magnus LU and Almar, Rafael
- organization
- publishing date
- 2021-11
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Bight of Benin, Coastal management, Harbor, Inlet, Sediment transport rate, Shoreline evolution model
- in
- Regional Studies in Marine Science
- volume
- 48
- article number
- 101995
- publisher
- Elsevier
- external identifiers
-
- scopus:85122663713
- ISSN
- 2352-4855
- DOI
- 10.1016/j.rsma.2021.101995
- language
- English
- LU publication?
- yes
- id
- 4067ec8b-b909-4523-9a73-cf64984cd30d
- date added to LUP
- 2022-03-04 15:13:14
- date last changed
- 2022-04-27 19:21:19
@article{4067ec8b-b909-4523-9a73-cf64984cd30d, abstract = {{<p>The 400-km long coast of the Bight of Benin, formed by sand barriers and lagoons, is bordered to the east by the Niger River Delta and to the west by the Volta River Delta and is characterized by several coastal infrastructures, of which the most important are the deep water harbors of Lomé, Cotonou, and Lagos. In this study, an enhanced version of the CASCADE coastal evolution model was implemented in order to reproduce the evolution of the coast over the period 2000-2015, considering the presence of coastal infrastructure, inlets, and the reduced sediment influx from rivers. The model results showed simulated coastal response around the main coastal infrastructure in agreement with observed data. In addition, the validated model was used to estimate the amount of sediment needed to control erosion through beach nourishment downstream of the harbors. The impact of reducing sediment input on coastal evolution was investigated through model parameterization of the influx at the boundary. Overall, the model may be a useful tool for improving regional coastal policies in the Bight of Benin.</p>}}, author = {{Abessolo, Grégoire O. and Hoan, Le Xuan and Larson, Magnus and Almar, Rafael}}, issn = {{2352-4855}}, keywords = {{Bight of Benin; Coastal management; Harbor; Inlet; Sediment transport rate; Shoreline evolution model}}, language = {{eng}}, publisher = {{Elsevier}}, series = {{Regional Studies in Marine Science}}, title = {{Modeling the Bight of Benin (Gulf of Guinea, West Africa) coastline response to natural and anthropogenic forcing}}, url = {{http://dx.doi.org/10.1016/j.rsma.2021.101995}}, doi = {{10.1016/j.rsma.2021.101995}}, volume = {{48}}, year = {{2021}}, }