@article{fdi:010077929,
  title = {{M}ulti-scale analysis of runoff from a statistical perspective in a small {S}ahelian catchment under semi-arid climate},
  author = {{M}ounirou, {L}. {A}. and {Z}oure, {C}. {O}. and {Y}onaba, {R}. and {P}aturel, {J}ean-{E}mmanuel and {M}ah{\'e}, {G}il and {N}iang, {D}. and {Y}acouba, {H}. and {K}arambiri, {H}.},
  editor = {},
  language = {{ENG}},
  abstract = {{I}n {S}ahelian and semi-arid regions, understanding the runoff processes and at different spatial scales is critical to assess sources of variation and further improve distributed modelling. {I}n this study, through a multi-scale analysis, runoff measurements on different soil surface features and at different scales of observation were carried over 6 years of monitoring in a typical {S}ahelian landscape in {B}urkina {F}aso. {S}tatistical and dimensional analyses were used to investigate significant differences in runoff response behaviour on plots of 1 m(2), 50 m(2) and 150 m(2), hydrologic units of 6 and 34 ha and the catchment of 37 km(2). {R}esults showed that on both cultivated and bare soils, the runoff excess decreases as the area increases, under similar rainfall pattern and prior antecedent soil moisture conditions. {O}n degraded soils, the processes of runoff generation on the plots of 50 and 150 m(2) are identical and significantly different from those observed on the unit plot (1 m(2)). {A} minimum plot length of 10 m was found to be sufficient to accurately estimate runoff on degraded soils. {O}n cultivated soils, runoff is significantly different from one site to another because of the spatial variability of hydrodynamic properties of the soil. {S}uch results show that the scale effect on runoff is related to the spatial heterogeneity of soils and is further intensified by the rainfall intensity. {S}uch results highlight the value of quantification of runoff on homogeneous units, hence allowing an innovative approach to the problem of scale transfer.},
  keywords = {{R}ainfall intensity ; {R}unoff potential ; {S}ahel ; {S}oil spatial heterogeneity ; {S}urface feature ; {ZONE} {SEMIARIDE} ; {ZONE} {SAHELIENNE}},
  booktitle = {},
  journal = {{A}rabian {J}ournal of {G}eosciences},
  volume = {13},
  numero = {4},
  pages = {art. 154 [16 p.]},
  ISSN = {1866-7511},
  year = {2020},
  DOI = {10.1007/s12517-020-5141-2},
  URL = {https://www.documentation.ird.fr/hor/fdi:010077929},
}