@article{fdi:010069198, title = {{U}n si{\`e}cle de d{\'e}bits annuels du fleuve {S}{\'e}n{\'e}gal}, author = {{H}ubert, {P}. and {B}ader, {J}ean-{C}laude and {B}endjoudi, {H}.}, editor = {}, language = {{FRE}}, abstract = {{T}he discharges of the {S}enegal {R}iver, the catchment area of which is 218 000 km(2) at the {B}akel gauging station located on the {M}alian-{S}enegalese border, integrating the climatological conditions of a wide {W}est {A}frican region, have been measured since the beginning of the 20th century. {T}hus, we now have a century-long time series, partially reconstituted as the river discharges have been influenced since 1987 by the {M}anantali {D}am operation. {T}he segmentation procedure-previously applied to a shorter time series-was applied to the 1904-2003 time series. {O}riginating from the study of the pluviometric abrupt change observed in {W}est {A}frica at the end of the 1960s, the segmentation procedure can be seen as a stationarity test enabling one to determine whether or not a time series is homogeneous (stationary) and, if not, whether it can be cut into stationary segments. {T}his procedure has been applied in an original way, by investigating all sub-series beginning in 1904 and all sub-series finishing in 2003. {T}his analysis, which studies the neighbourhood of the two extremities of the series, shows the pluviometric jumps already observed in the previous studies, but also shows a new positive jump between 1993 and 1994 which appears, at least for the {S}enegal {R}iver catchment, as the end of the drought which began at the end of the 1960s.}, keywords = {{S}enegal ; {W}est {A}frica ; time series analysis ; {H}ubert segmentation ; drought ; discharge ; nonstationarity ; singularity ; abrupt change ; {FLEUVE} {SENEGAL} {VALLEE} ; {SENEGAL} ; {MALI}}, booktitle = {}, journal = {{H}ydrological {S}ciences {J}ournal. {J}ournal des {S}ciences {H}ydrologiques}, volume = {52}, numero = {1}, pages = {68--73}, ISSN = {0262-6667}, year = {2007}, DOI = {10.1623/hysj.52.1.68}, URL = {https://www.documentation.ird.fr/hor/fdi:010069198}, }