@article{fdi:010081000,
  title = {{S}patiotemporal dynamics of suspended sediments in the {N}egro {R}iver, {A}mazon {B}asin, from in situ and {S}entinel-2 remote sensing data},
  author = {{M}arinho, {R}. {R}. and {H}armel, {T}. and {M}artinez, {J}ean-{M}ichel and {F}ilizola, {N}. {P}.},
  editor = {},
  language = {{ENG}},
  abstract = {{M}onitoring suspended sediments through remote sensing data in black-water rivers is a challenge. {H}erein, remote sensing reflectance ({R}-rs) from in situ measurements and {S}entinel-2 {M}ulti-{S}pectral {I}nstrument ({MSI}) images were used to estimate the suspended sediment concentration ({SSC}) in the largest black-water river of the {A}mazon basin. {T}he {N}egro {R}iver exhibits extremely low {R}-rs values (<0.005 sr(-1) at visible and near-infrared bands) due to the elevated absorption of coloured dissolved organic matter (a{CDOM} at 440 nm > 7 m(-1)) caused by the high amount of dissolved organic carbon ({DOC} > 7 mg {L}-1) and low {SSC} (<5 mg {L}-1). {I}nterannual variability of {R}-rs is primarily controlled by the input of suspended sediments from the {B}ranco {R}iver, which is a clear water river that governs the changes in the apparent optical properties of the {N}egro {R}iver, even at distances that are greater than 90 km from its mouth. {B}etter results were obtained using the {S}entinel-2 {MSI} {R}ed band ({B}and 4 at 665 nm) in order to estimate the {SSC}, with an {R}-2 value greater than 0.85 and an error less than 20% in the adjusted models. {T}he magnitudes of water reflectance in the {S}entinel-2 {MSI} {R}ed band were consistent with in situ {R}-rs measurements, indicating the large spatial variability of the lower {SSC} values (0 to 15 mg {L}-1) in a complex anabranching reach of the {N}egro {R}iver. {T}he in situ and satellite data analysed in this study indicates sedimentation processes in the lower {N}egro {R}iver near the {A}mazon {R}iver. {T}he results suggest that the radiometric characteristics of sensors, like sentinel-2 {MSI}, are suitable for monitoring the suspended sediment concentration in large tropical black-water rivers.},
  keywords = {inorganic sediment ; remote sensing reflectance ; black-water river ; fluvial archipelago ; anabranching ; floodplain ; {BRESIL} ; {AMAZONE} {BASSIN} ; {RIO} {NEGRO} {BASSIN} ; {ANAVILHANAS}},
  booktitle = {},
  journal = {{I}sprs {I}nternational {J}ournal of {G}eo-{I}nformation},
  volume = {10},
  numero = {2},
  pages = {86 [22 ]},
  year = {2021},
  DOI = {10.3390/ijgi10020086},
  URL = {https://www.documentation.ird.fr/hor/fdi:010081000},
}