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The grading analysis and the bathymetric surveys made in Adjin lagoon, allowed to
characterize sandy sediments and morphology of the bottom of this lagoon. On the
bottom of the lagoon, sediments are mainly constituted by mud located at the bottom
while on the border of the lagoon, we essentially meet sands. Pebbles and gravels are
located at certain points around the lagoon, and near the outlets of Djibi and Bété
Rivers. Most of the sands of the Adjin lagoon result from a riverine type of
environment. The majority of sands move by saltation. The means of transportation of
fine sands is dominated by suspension. Mean sands move essentially by saltation.
Rolling transport is the dominant transportation for coarse sands. This study allowed to
realize bathymetric maps and sediment distribution maps, as well as the determination
of the deposit environment of sands. |
