@article{fdi:010053149,
  title = {{G}lobal uncertainty analysis of suspended sediment monitoring using turbidimeter in a small mountainous river catchment},
  author = {{N}avratil, {O}ldrich and {E}steves, {M}ichel and {L}egout, {C}. and {G}ratiot, {N}icolas and {N}emery, {J}. and {W}illmore, {S}imon and {G}rangeon, {T}.},
  editor = {},
  language = {{ENG}},
  abstract = {{A} major challenge confronting the scientific community is to understand both patterns of and controls over spatial and temporal variability of suspended sediment dynamics in rivers, as these sediment govern nutriment export, river morphology, siltation of downstream reservoirs and degradation of water quality. {H}igh-frequency suspended sediment monitoring programs are required to meet this goal, particularly research in highly erodible mountainous catchments which supply the sediment load of the entire downstream fluvial network. {H}owever, in this context, analysis of the data and their interpretation are generally limited by many sources of uncertainty in river monitoring. {T}his paper proposes to estimate the global uncertainty of suspended sediment monitoring using turbidimeter in a small mountainous river catchment (22 km(2); {S}outhern {F}rench {A}lps). {W}e first conducted a detailed analysis of the main uncertainty components associated with the turbidity approach, i.e. a widely used method to continuously survey the suspended sediment concentration ({SSC}). {T}hese uncertainty components were then propagated with {M}onte {C}arlo simulations. {F}or individual records, {SSC} uncertainties are found to be on average less than 10%, but they can reach 70%. {A}t the flood scale, the mean and the maximum {SSC} uncertainties are on average 20% (range, 1-30%), whereas sediment yield uncertainty is a mean 30% (range, 20-50% depending on the flood considered; discharge error, 20%). {A}nnual specific sediment yield ({SSY}*) was then 360 +/- 100 t km(-2) year(-1). {U}ncertainty components associated with the automatic pumping procedure, discharge measurement and turbidity fluctuation at the short time scale were found to be the greatest uncertainties. {SSC} and {SSY} uncertainties were found highly site- and time-dependent as they vary significantly with the hydro-sedimentary conditions. {T}his study demonstrates that global uncertainty accounts for only a small part of inter-flood {SSC} and {SSY} variability. {I}t outlines the controlling factors of land use, relief, geology and rainfall regime on suspended sediment yields.},
  keywords = {{M}onte {C}arlo simulations ; {T}urbidity ; {T}urbidimeter calibration ; {P}umping ; sampler ; {S}ediment yield},
  booktitle = {},
  journal = {{J}ournal of {H}ydrology},
  volume = {398},
  numero = {3-4},
  pages = {246--259},
  ISSN = {0022-1694},
  year = {2011},
  DOI = {10.1016/j.jhydrol.2010.12.025},
  URL = {https://www.documentation.ird.fr/hor/fdi:010053149},
}