@article{fdi:010072467,
  title = {{R}etrieval of suspended sediment concentrations using {L}andsat-8 {OLI} satellite images in the {O}rinoco {R}iver ({V}enezuela)},
  author = {{Y}epez, {S}. and {L}araque, {A}lain and {M}artinez, {J}ean-{M}ichel and {D}e {S}a, {J}. and {C}arrera, {J}. {M}. and {C}astellanos, {B}. and {G}allay, {M}. and {L}opez, {J}. {L}.},
  editor = {},
  language = {{ENG}},
  abstract = {{I}n this study, 81 {L}andsat-8 scenes acquired from 2013 to 2015 were used to estimate the suspended sediment concentration ({SSC}) in the {O}rinoco {R}iver at its main hydrological station at {C}iudad {B}olivar, {V}enezuela. {T}his gauging station monitors an upstream area corresponding to 89% of the total catchment area where the mean discharge is of 33,000 m(3).s (1). {SSC} spatial and temporal variabilities were analyzed in relation to the hydrological cycle and to local geomorphological characteristics of the river mainstream. {T}hree types of atmospheric correction models were evaluated to correct the {L}andsat-8 images: {DOS}, {FLAASH}, and {L}8{SR}. {S}urface reflectance was compared with monthly water sampling to calibrate a {SSC} retrieval model using a bootstrapping resampling. {A} regression model based on surface reflectance at the {N}ear-{I}nfrared wavelengths showed the best performance: {R}-2 = 0.92 ({N} = 27) for the whole range of {SSC} (18 to 203 mg.l (1)) measured at this station during the studied period. {T}he method offers a simple new approach to estimate the {SSC} along the lower {O}rinoco {R}iver and demonstrates the feasibility and reliability of remote sensing images to map the spatiotemporal variability in sediment transport over large rivers.},
  keywords = {{S}uspended sediment concentration ; {F}unnel effect ; {S}urface {R}eflectance ; {L}andsat-8 ; {A}tmospheric correction ; {O}rinoco {R}iver ; {L}8{SR} ; {VENEZUELA} ; {ORENOQUE}},
  booktitle = {},
  journal = {{C}omptes {R}endus {G}eoscience},
  volume = {350},
  numero = {1-2},
  pages = {20--30},
  ISSN = {1631-0713},
  year = {2018},
  DOI = {10.1016/j.crte.2017.08.004},
  URL = {https://www.documentation.ird.fr/hor/fdi:010072467},
}