@article{fdi:010048418,
  title = {{I}ncrease in suspended sediment discharge of the {A}mazon {R}iver assessed by monitoring network and satellite data},
  author = {{M}artinez, {J}ean-{M}ichel and {G}uyot, {J}ean-{L}oup and {F}ilizola, {N}. and {S}ondag, {F}rancis},
  editor = {},
  language = {{ENG}},
  abstract = {{T}his study addresses the quantification of the {A}mazon {R}iver sediment budget which has been assessed by looking at data from a suspended sediment discharge monitoring network and remote sensing estimates derived from {MODIS} spaceborne sensor. {S}urface suspended sediment concentration has been sampled every 10 days since 1995 (390 samples available) by the international {HYBAM} program at the {O}bidos station which happens to be the last gauged station of the {A}mazon {R}iver before the {A}tlantic {O}cean. {R}emote sensing reflectance is derived from continuous time series of 554 {MODIS} images available since 2000 and calibrated with the {HYBAM} field measurements. {D}ischarge shows a weak correlation with the suspended sediment concentration during the annual hydrological cycle, preventing us from computing sediment discharge directly from the water discharge. {A}ccordingly, river sediment discharge is assessed by multiplying daily water discharge measurements by the suspended sediment concentration averaged on a monthly basis. {C}omparisons of annual sediment discharge assessed using both field and satellite datasets show a very good agreement with a mean difference lower than 1%. {B}oth field and satellite-derived estimates of the sediment concentration of the {A}mazon {R}iver are combined to get an uninterrupted monthly average suspended sediment discharge from 1995 to 2007. {U}nlike the water discharge which exhibits a steady trend over the same period at {O}bidos, the 12-year suspended sediment discharge increases by about 20% since 1995, significant at the 99% level. {I}n particular, the inter-annual variability is much more significant in the sediment discharge than in the river discharge.},
  keywords = {{H}ydrology ; {S}ediment concentration ; {A}mazon ; {R}emote sensing ; {HYBAM} ; {MODIS}},
  booktitle = {{S}ediment sources and sediment delivery under environmental change},
  journal = {{C}atena},
  volume = {79},
  numero = {3},
  pages = {257--264},
  ISSN = {0341-8162},
  year = {2009},
  DOI = {10.1016/j.catena.2009.05.011},
  URL = {https://www.documentation.ird.fr/hor/fdi:010048418},
}