@article{fdi:010053582,
  title = {{A} simple model accounting for the uptake, transport, and deposition of wind-eroded mineral particles in the hyperarid coastal {A}tacama {D}esert of northern {C}hile},
  author = {{A}lfaro, {S}.{C}. and {F}lores {A}queveque, {V}. and {F}oret, {G}. and {C}aquineau, {S}andrine and {V}argas, {G}. and {R}utllant, {J}.{A}.},
  editor = {},
  language = {{ENG}},
  abstract = {{A}s previously observed in marine sediments collected downwind of {A}frican or {S}outh {A}merican continental sources, recent studies of sediment cores collected at the bottom of {M}ejillones {B}ay in north {C}hile (23 degrees {S}) show a laminated structure in which the amount of particles of aeolian origin and their size create significant differences between the layers. {T}his suggests inter-annual to inter-decadal variations in the strength of the local southerly winds responsible for (1) the erosion of the adjacent hyperarid surface of the {M}ejillones {P}ampa, and (2) the subsequent transport of the eroded particles towards the bay. {A} simple model accounting for the vertical uptake, transport, and deposition of the particles initially set into motion by wind at the surface of the pampa is proposed. {T}his model, which could be adapted to other locations, assumes that the initial rate of (vertical) uptake is proportional to the (horizontal) saltation flux quantified by means of {W}hite's equation, that particles are lifted to a height ({H}), increasing with the magnitude of turbulence, and that sedimentation progressively removes the coarsest particles from the air column as it moves towards the bay. {I}n this model, the proportionality constant ({A}) linking the vertical flux of particles with the horizontal flux, and the injection height ({H}) control the magnitude and size distribution of the deposition flux in the bay. {T}heir values are determined using the wind speed measured over the pampa and the size distribution of particles collected in sediment traps deployed in the bay as constraints. {A}fter calibration, the model is used to assess the sensitivity of the deposition flux to the wind intensity variations. {T}he possibility of performing such quantitative studies is necessary for interpreting precisely the variability of the aeolian material in the sediment cores collected at the bottom of {M}ejillones {B}ay.},
  keywords = {wind erosion ; sand transport modeling ; deposition rate ; {A}tacama {D}esert ; {CHILI}},
  booktitle = {},
  journal = {{E}arth {S}urface {P}rocesses and {L}andforms},
  volume = {36},
  numero = {7},
  pages = {923--932},
  ISSN = {0197-9337},
  year = {2011},
  DOI = {10.1002/esp.2122},
  URL = {https://www.documentation.ird.fr/hor/fdi:010053582},
}