@article{fdi:010053640,
  title = {{C}ombining suspended sediment monitoring and fingerprinting to determine the spatial origin of fine sediment in a mountainous river catchment},
  author = {{E}vrard, {O}. and {N}avratil, {O}ldrich and {A}yrault, {S}. and {A}hmadi, {M}. and {N}emery, {J}ulien and {L}egout, {C}. and {L}efevre, {I}. and {P}oirel, {A}. and {B}onte, {P}. and {E}steves, {M}ichel},
  editor = {},
  language = {{ENG}},
  abstract = {{A}n excess of fine sediment (grain size <2 mm) supply to rivers leads to reservoir siltation, water contamination and operational problems for hydroelectric power plants in many catchments of the world, such as in the {F}rench {A}lps. {T}hese problems are exacerbated in mountainous environments characterized by large sediment exports during very short periods. {T}his study combined river flow records, sediment geochemistry and associated radionuclide concentrations as input properties to a {M}onte {C}arlo mixing model to quantify the contribution of different geologic sources to river sediment. {O}verall, between 2007 and 2009, erosion rates reached 249 +/- 75 t km(-2) yr(-1) at the outlet of the {B}leone catchment, but this mean value masked important spatial variations of erosion intensity within the catchment (85-5000 t km(-2) yr(-1)). {Q}uantifying the contribution of different potential sources to river sediment required the application of sediment fingerprinting using a {M}onte {C}arlo mixing model. {T}his model allowed the specific contributions of different geological sub-types (i.e. black marls, marly limestones, conglomerates and {Q}uaternary deposits) to be determined. {E}ven though they generate locally very high erosion rates, black marls supplied only a minor fraction (5-20%) of the fine sediment collected on the riverbed in the vicinity of the 907 km(2) catchment outlet. {T}he bulk of sediment was provided by {Q}uaternary deposits (21-66%), conglomerates (3-44%) and limestones (9-27%). {E}ven though bioengineering works conducted currently to stabilize gullies in black marl terrains are undoubtedly useful to limit sediment supply to the {B}leone river, erosion generated by other substrate sources dominated between 2007 and 2009 in this catchment.},
  keywords = {sediment fingerprinting ; river ; {M}onte {C}arlo mixing model ; radionuclides ; elemental geochemistry ; suspended sediment yield ; mountain erosion},
  booktitle = {},
  journal = {{E}arth {S}urface {P}rocesses and {L}andforms},
  volume = {36},
  numero = {8},
  pages = {1072--1089},
  ISSN = {0197-9337},
  year = {2011},
  DOI = {10.1002/esp.2133},
  URL = {https://www.documentation.ird.fr/hor/fdi:010053640},
}