Morphology and Current Dynamic of the Coast of Togo

by Adot? Blivi, Univ of Lome, Lome, Togo,



Document Type: Proceeding Paper

Part of: Coastlines of Western Africa

Abstract:

The Togolese coast, flat and fifty km long, is made of two generations of beach ridges, separated from the sedimentary coastal basin, of the Tertiary age, by a continuous system of lagoons. It has been submitted over the last two decades to violent erosion following the construction of the deep water port of Lome, without any consideration of the possible environmental impact. The port's jetty 1800 m long, blocking the West-East offshore drift (1,2 to 1,5 million m³? year), has caused an accumulation of sand on the west facade over approximately 10 km and is causing the gradual erosion along 45 km of the coast towards the east; the average speed is between 5 and 10 m/year.

Subject Headings: Erosion | Beaches | Sediment | Ports and harbors | Ocean currents | Lagoons | Developing countries | Africa | Togo

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