Climate and environmental changes since the Last Glacial Maximum in the tropical zone of West Africa are usually inferred from marine and continental records. In this study, the potential of carbonate pedo-sedimentary geosystems, i.e. Vertisol relics, to record paleoenvironmental changes in the southwestern part of Chad Basin are investigated. A mu...
Climate and environmental changes since the Last Glacial Maximum in the tropical zone of West Africa are usually inferred from marine and continental records. In this study, the potential of carbonate pedo-sedimentary geosystems, i.e. Vertisol relics, to record paleoenvironmental changes in the southwestern part of Chad Basin are investigated. A mu...
Study region: Houay Xon catchment in northern Laos.Study focus: Because agricultural headwater catchments of SE Asia are prone to erosion anddeliver a significant proportion of the total suspended sediment supply to major rivers andfloodplains, the potential sources of sediments and their dynamics were studied for twosuccessive storm flow events in...
Existing global land use/land cover (LULC) raster maps have limited spatial and thematic resolution relative to the strong heterogeneity of agricultural landscapes. One promising approach to derive more informative maps is using fractional cover instead of hard classification. Here, we evaluate the effect of three key data processing options on the...
Formed on the upper basin by the annual monsoon, the flood of Senegal River inundates a vast floodplain on its lower course, called "the valley". This one, several hundred kilometres long, can be regarded as an inland delta. This annual flooding, which offers ecosystem services and promotes traditional activities, must be maintained despite the pre...
Sahel rainfall shows pronounced decadal variability and a negative trend between wet conditions in the 1950s1960s and dry ones in the 1970s1980s. Using continuous wavelet transform, the quasi-decadal variability (QDV) of rainfall reveals zonal contrasts. The highest QDV is identified in the 1950s1960s over western Sahel and in the 1970s1980s over e...
Sahel rainfall shows pronounced decadal variability and a negative trend between wet conditions in the 1950s1960s and dry ones in the 1970s1980s. Using continuous wavelet transform, the quasi-decadal variability (QDV) of rainfall reveals zonal contrasts. The highest QDV is identified in the 1950s1960s over western Sahel and in the 1970s1980s over e...
