Characterization of periodic oxillations of the tide signal Observed in the Ebrie lagoon off the coast of Abidjan (Cote d'Ivoire)

Nowadays, rising water levels are a major factor threatening our coasts. We need to carry out more studies to better understand our coastal environment and obtain information in real time and continuously. It is in this context that this study was initiated. It consists of firstly showing the factors which make the coasts more vulnerable and then secondly showing the complementarity of the data at the different stations. We used data from two tide gauges (radar and float). The average level calculated at the fascinage and north quay stations during the different seasons varying from 0.95 m during low water periods to 1.12 m during flood periods, reveals to us that our coasts are more vulnerable in the rainy season and flood period. The determination of the duration of the flow and the ebb as well as the averages during these different seasons show that the data from a missing station can be replaced by the data from an existing station.