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Almar Rafaël, Hounkonnou N., Anthony E. J., Castelle B., Senechal N., Laibi R., Mensah-Senoo T., Degbe G., Quenum M., Dorel Matthieu, Chuchla Rémy, Lefebvre Jean-Pierre, Penhoat Yves du, Laryea W. S., Zodehougan G., Sohou Z., Addo K. A., Ibaceta R., Kestenare Elodie. (2014). The Grand Popo beach 2013 experiment, Benin, West Africa: from short timescale processes to their integrated impact over long-term coastal evolution. Journal of Coastal Research, (no spécial 70), 651-656. ICS 2014 : International Coastal Symposium, Durban (ZFA), 2014/04/13-18. ISSN 0749-0208

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Lien direct chez l'éditeur doi:10.2112/si70-110.1

Titre
The Grand Popo beach 2013 experiment, Benin, West Africa: from short timescale processes to their integrated impact over long-term coastal evolution
Année de publication2014
Type de documentArticle référencé dans le Web of Science WOS:000338176100111
AuteursAlmar Rafaël, Hounkonnou N., Anthony E. J., Castelle B., Senechal N., Laibi R., Mensah-Senoo T., Degbe G., Quenum M., Dorel Matthieu, Chuchla Rémy, Lefebvre Jean-Pierre, Penhoat Yves du, Laryea W. S., Zodehougan G., Sohou Z., Addo K. A., Ibaceta R., Kestenare Elodie.
SourceJournal of Coastal Research, 2014, (no spécial 70)p. 651-656. ISSN 0749-0208
ColloqueICS 2014 : International Coastal Symposium, Durban (ZFA), 2014/04/13-18
RésuméThe first large nearshore field experiment in the Gulf of Guinea was conducted at Grand Popo Beach, Benin, in February 2013, on an open wave-dominated micro- to meso-tidal coast, located mid-way between Cotonou and Lome harbours. The overall project aims at understanding at multi-scale (from event to interannual) the causes of the dramatic erosion observed throughout the Bight of Benin, and caused by the interaction of a large littoral drift with human engineering works. Grand Popo 2013 experiment was designed to measure the processes over the short term and to test the ability of an installed video system to monitor the evolution of this stretch of coast over the longer tenn. The beach, characterized by a low-tide terrace and a high tide reflective part, experiences a long swell (Hs=1.6 m, Tp=16 s, oblique incidence similar to 15-20 degrees). Topographic surveys showed a double beach cusp system interaction and repeated surf-zone drifter runs revealed high flash and swash rip activity driven by wave dissipation over the terrace and energetic swash dynamics at the upper reflective beach. Swash was measured over a cusp system at two locations using video poles. Wave reanalyses (ERAInterim) were used to determine the wave climate and its variability, and to quantify sediment transport. This robust methodology is thought to be replicated elsewhere in different coastal environments in West Africa, in particular with the objective to monitor various sites within the framework of the new West African Coastal Observatory.
Plan de classementLimnologie physique / Océanographie physique [032] ; Sciences du milieu [021]
Descr. géo.GUINEE GOLFE ; BENIN
LocalisationFonds IRD [F B010063184]
Identifiant IRDfdi:010063184
Lien permanenthttp://www.documentation.ird.fr/hor/fdi:010063184

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