Impacts of breaching on a bar-built estuary, example of the Senegal River new mouth monitored with satellite imagery from 2003 to 2010

Auteur(s) et Affiliation(s)

DEROIN, J.-P.

Univ. Reims Champagne-Ardenne, CEGENAA EA 3795, Dep. Sciences de la Terre, Reims, France

WADE, S.

Univ. Cheikh Anta Diop, Inst. des Sciences de la Terre, Dakar, Senegal

DIA, A.

Univ. Cheikh Anta Diop, Inst. des Sciences de la Terre, Dakar, Senegal

Description :
This paper presents the results of a survey of an estuary in Senegal since a human-induced breach was opened in a bar at the mouth of the embayment in October 2003 to reduce the effect of a major flood event. The evolution of the new mouth's width has been analysed using a Landsat time series of 94 scenes, covering the period 2003-2010. This series is complemented by recent high resolution Alos-PRISM data, and very high resolution Ikonos data. The AA. focus on the consequences for the new mouth and the surrounding coastline. Methodological conclusions are also presented, regarding the potential role of remote sensing in surveying estuaries.

Type de document :
Article de périodique

Source :
Zeitschrift für Geomorphologie, issn : 0372-8854, 2012, vol. 56, n°. 3, p. 351-370, nombre de pages : 20, Références bibliographiques : 46 ref.

Date :
2012

Editeur :
Pays édition : Allemagne, Stuttgart, Gebruder Borntraeger

Langue :
Anglais