@inproceedings{fdi:010022808, title = {{C}artographie de la salinit{\'e} dans la vall{\'e}e du {S}{\'e}n{\'e}gal : succ{\`e}s d'une d{\'e}marche ascendante}, author = {{B}arbi{\'e}ro, {L}aurent and {L}aperrousaz, {C}.}, editor = {}, language = {{FRE}}, abstract = {{I}n the {S}enegal middle valley, the salt distribution is not related to the present faint topography. {T}his lack of logic is one of the major constraints for the establishment of new irrigated areas. {T}he salt distribution is studied here to better understand its variability, and to describe its structure and spatial arrangement. {S}aline areas are delineated measuring the electromagnetic soil conductivity ({EM}). {T}he kriged map is compared to the aerial photograph. {T}he salinity is distributed as stripes in the {SW}-{NE} direction, fringing a former creek on the southern bank. {T}he stripe is intersected by an actual creek bed, indicating that the salt distribution is ancient and does not result from a recent remobilisation of the marine salt incorporated in the soil. {T}he relationship between salt distribution and the former geomorphology allows us to survey the whole {N}'{G}alenka region using the {EM} measurements on selected transects. ({R}{\'e}sum{\'e} d'auteur)}, keywords = {{SOL} ; {SALINITE} ; {CARTOGRAPHIE} ; {PROSPECTION} {MAGNETIQUE} ; {PROSPECTION} {ELECTRIQUE} ; {ELECTROMAGNETISME} ; {GEOMORPHOLOGIE} ; {PHOTOGRAPHIE} {AERIENNE} ; {AMENAGEMENT} {HYDROAGRICOLE} ; {IRRIGATION} ; {AGRICULTURE} ; {ETUDE} {REGIONALE} ; {SENEGAL} {FLEUVE} {VALLEE}}, numero = {}, pages = {3--7}, booktitle = {{GEOFCAN} : actes du 2{\`e}me colloque de g{\'e}ophysique des sols et des formations superficielles : r{\'e}sum{\'e}s {\'e}tendus}, year = {1999}, URL = {https://www.documentation.ird.fr/hor/fdi:010022808}, }