@article{fdi:010084910,
  title = {{S}easonal dissolved rare earth element dynamics of the {A}mazon {R}iver main stem, its tributaries, and the {C}uruai floodplain - art. no. {Q}12005},
  author = {{B}arroux, {G}w{\'e}na{\¨e}l and {S}onke, {J}. {E}. and {B}oaventura, {G}. and {V}iers, {J}. and {G}odderis, {Y}. and {B}onnet, {M}arie-{P}aule and {S}ondag, {F}rancis and {G}ardoll, {S}. and {L}agane, {C}hristelle and {S}eyler, {P}atrick},
  editor = {},
  language = {{ENG}},
  abstract = {{W}e present a comprehensive dissolved rare earth element ({REE}) data set for the {A}mazon {R}iver and its main tributaries, {R}io {N}egro, {S}olimoes, and {M}adeira, as well as the {C}uruai floodplain. {T}he two-year time series show that {REE} vary seasonally with discharge in each of the tributaries, and indicate a hydrologically dominated control. {U}pper crust normalized {REE} patterns are relatively constant throughout the year, with {C}e/{C}e* anomalies being positively related to discharge. {W}e propose revised annual dissolved {REE} fluxes to the surface {A}tlantic {O}cean based on an integration of the seasonal data. {F}or {N}d (< 0.22 mu m) this results in an average flux of 607 +/- 43 {T}/yr, which is at least 1.6 times larger than the previous estimate of 374 {T}/yr (< 0.45 mu m) based on low water stage data. {M}oreover, during the high water season the maximum {N}d flux measures 1277 t. yr(-1), constituting 30% of the required flux to the {A}tlantic {O}cean ({T}achikawa et al., 2003). {C}onsequently, a smaller contribution of {N}d from atmospheric and river particle desorption is required than was previously suggested. {A} mass balance of {A}mazon tributaries and observed fluxes at {O}bidos indicates that dissolved {LREE} behave quasi-conservatively. {C}onversely, the {HREE} mass balance presents a deficit during the high water stages, which could be related to the passage of water through the floodplain system accompanied by solid/dissolved phase transfer.},
  keywords = {rare earth element ; {A}mazon {R}iver ; neodymium ; mass balance ; floodplains ; tributaries ; geochemical cycles ; composition of the hydrosphere ; major and trace element geochemistry ; {BRESIL} ; {AMAZONIE} ; {AMAZONE} {COURS} {D}'{EAU}},
  booktitle = {},
  journal = {{G}eochemistry {G}eophysics {G}eosystems},
  volume = {7},
  numero = {},
  pages = {{NIL}_37--{NIL}_54},
  ISSN = {1525-2027},
  year = {2006},
  DOI = {10.1029/2006{GC}001244},
  URL = {https://www.documentation.ird.fr/hor/fdi:010084910},
}