@article{fdi:010050492,
  title = {{S}oil detachment and transport on field- and laboratory-scale interrill areas: erosion processes and the size-selectivity of eroded sediment},
  author = {{M}alam {I}ssa, {O}. and {L}e {B}issonnais, {Y}. and {P}lanchon, {O}livier and {F}avis {M}ortlock, {D}. and {S}ilvera, {N}orbert and {W}ainwright, {J}.},
  editor = {},
  language = {{ENG}},
  abstract = {{F}ield- and laboratory-scale rainfall simulation experiments were carried out in an investigation of the temporal variability of erosion processes on interrill areas, and the effects of such variation upon sediment size characteristics. {P}oorly aggregated sandy soils from the semiarid environment of {S}enegal, {W}est {A}frica, were used on both a 40 m(2) field plot and a 0-25 m(2) laboratory plot; rainfall intensity for all experiments was 70 mm h(-1) with a duration of 1 to 2 hours. {T}ime-series measurements were made of the quantity and the size distribution of eroded material: these permitted an estimate of the changing temporal balance between the main erosion processes (splash and wash). {R}esults from both spatial scales showed a similar temporal pattern of runoff generation and sediment concentration. {F}or both spatial scales, the dominant erosional process was detachment by raindrops; this resulted in a dynamic evolution of the soil surface under raindrop impact, with the rapid formation of a sieving crust followed by an erosion crust. {H}owever, a clear difference was observed between the two scales regarding the size of particles detached by both splash and wash. {W}hile all measured values were lower than the mean weight diameter ({MWD}) value of the original soil (mean 0(.)32 mm), demonstrating the size-selective nature of wash and splash processes, the {MWD} values of washed and splashed particles at the field scale ranged from 0(.)08 to 0(.)16 mm and from 0(.)12 to 0(.)30 mm respectively, whereas the {MWD} values of washed and splashed particles at the laboratory scale ranged from 0(.)13 to 0(.)29 mm and from 0(.)21 to 0(.)32 mm respectively. {T}hus only at the field scale were the soil particles detached by splash notably coarser than those transported by wash. {T}his suggests a transport-limited erosion process at the field scale. {D}ifferences were also observed between the dynamics of the soil loss by wash at the two scales, since results showed wider scatter in the field compared to the laboratory experiments. {T}his scatter is probably related to the change in soil surface characteristics due to the size-selectivity of the erosion processes at this spatial scale. {C}opyright (c) 2006 {J}ohn {W}iley and {S}ons, {L}td.},
  keywords = {splash ; wash ; runoff ; interrill erosion ; soil crusting ; sediment size distribution},
  booktitle = {},
  journal = {{E}arth {S}urface {P}rocesses and {L}andforms},
  volume = {31},
  numero = {8},
  pages = {929--939},
  ISSN = {0197-9337},
  year = {2006},
  DOI = {10.1002/esp.1303},
  URL = {https://www.documentation.ird.fr/hor/fdi:010050492},
}