Coastal and Sand Spit Evolution from 1958 to 1992: Saloum River Mouth (Senegal, West Africa)

by E. S. Diop, COMARAF, Dakar, Senegal,
M. Ba, COMARAF, Dakar, Senegal,
B. Diouf, COMARAF, Dakar, Senegal,
J. L. Saos, COMARAF, Dakar, Senegal,
J. P. Barusseau, COMARAF, Dakar, Senegal,
C. Descamps, COMARAF, Dakar, Senegal,
A. Soumare, COMARAF, Dakar, Senegal,
H. Chevillotte, COMARAF, Dakar, Senegal,
P. A. Diallo, COMARAF, Dakar, Senegal,



Document Type: Proceeding Paper

Part of: Coastlines of Western Africa

Abstract:

From the bathymetric map made in 1958 with the Marine Hydrographical Service in France (Number 6147), the 1976 Landsat imagery, the 1981 SPOT simulations, the 1991 SPOT data and the field measurements realized between 1991 and 1992, the coastline and the Sangomar and spit evolution have been studied. During a big storm which happened in February 1987, the Sangomar sand spit broke off. The coastal erosion phenomena North of the breached spit has been studied through regular laser topogeodimeter measurements. Bathymetric profiles have been realized through echosounder which allows the monitoring of the morphology of the channels created inside the breached spit called the Lagoba breach and the main channels of the Saloum river.

Subject Headings: Beaches | Sandy soils | Bathymetry | Sand (hydraulic) | Erosion | Channels (waterway) | Beach profiles | Africa | Senegal | France | Europe

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