Identification Of The Causes Of The Seabed Dynamics (Cotonou Coast/Benin)

Bernard  N. Tokpohozin; Koffi  J. Agbélèlè; Fernando  Y. J. Kpomahou; Christian  D. Akowanou; Mathias  A. Houékpohéha; Guy  H. Hounguè; Basile  B. Kounouhéwa

doi:10.6180/jase.202509_28(9).0014

Identification Of The Causes Of The Seabed Dynamics (Cotonou Coast/Benin)

Material Engineering Mathematics / Statistics Physics

Bernard N. Tokpohozin^1,2,3,6,7This email address is being protected from spambots. You need JavaScript enabled to view it., Koffi J. Agbélèlè^4,6, Fernando Y. J. Kpomahou^4,6, Christian D. Akowanou^1,3,6, Mathias A. Houékpohéha^2,5, Guy H. Hounguè^4,5, and Basile B. Kounouhéwa^3,4,5

¹Higher National Institute of Preparatory Classes for Engineering Studies (INSPEI / UNSTIM) of Abomey, Republic of Benin

²Institute of Mathematics and Physical Sciences (IMSP/UAC) 01BP 613) Porto-Novo, Republic of Benin

³Laboratory of Sciences, Engineering and Mathematics (LSIMA/UNSTIM), Abomey, Republic of Benin

⁴Higher Normal School of Technical Education (ENSET / UNSTIM) of Lokossa BP 133 Lokossa, Republic of Benin

⁵Department of Physics (FAST) and Materials Sciences Doctoral Training (FDSM / UAC), Republic of Benin

⁶National University of Sciences, Technologies, Engineering and Mathematics (UNSTIM), BP: 486 Abomey, Republic of Benin

⁷Physics and Applications Laboratory (LPA/UNSTIM), Abomey, Republic of Benin

Received: July 19, 2024
Accepted: October 19, 2024
Publication Date: December 28, 2024

Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.

Download Citation: ||https://doi.org/10.6180/jase.202509_28(9).0014

Due to the issues related to the evolution of the seabed, the determination of the retreat or advancement of the ocean has been the subject of numerous scientific studies. Coastal areas are among the most dynamic places on the planet. Most of the coasts in the world are affected by the phenomenon of coastal erosion, in particular the coast of Benin. On the coast of Benin and in the Gulf of Guinea in general, the dynamics of the coastline is not a recent phenomenon but its scale has increased over the last decades. This erosion is the consequence of the impact of the swells. Identifying the causes of seabed dynamics in coastal areas is essential to understanding the physics of the phenomenon. This work emphasizes the different parameters that influence the morphodynamic evolutions of the beach and the coastline in this coastal area. The study is based on data obtained from the IRHOB (Institute of Halieutic and Oceanographic Research of Benin) of the CBRST (Benin Center for Scientific and Technical Research) on swells. This data was recorded with a time interval of 5 minutes; this allowed us to model the evolution of the coastline of the Benin coast. The results obtained show the major causes of the dynamics of the seabed on this coast in recent years.

Keywords: Coastline; Coastal dynamics; Swell direction; wave parameters; Benin Coastline

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