@article{fdi:010048252,
  title = {{C}ontrasting regional discharge evolutions in the {A}mazon basin (1974-2004)},
  author = {{V}illar, {J}. {C}. {E}. and {G}uyot, {J}ean-{L}oup and {R}onchail, {J}osyane and {C}ochonneau, {G}{\'e}rard and {F}ilizola, {N}. and {F}raizy, {P}ascal and {L}abat, {D}. and de {O}liveira, {E}. and {O}rdonez, {J}. {J}. and {V}auchel, {P}hilippe},
  editor = {},
  language = {{ENG}},
  abstract = {{F}ormer hydrological studies in the {A}mazon {B}asin generally describe annual discharge variability on the main stem. {H}owever, the downstream {A}mazon {R}iver only represents the mean state of the {A}mazonian hydrological system. {T}his study therefore uses a new data set including daily discharge in 18 sub-basins to analyze the variability of regional extremes in the {A}mazon basin, after recalling the diversity of the hydrological annual cycles within the {A}mazon basin. {S}everal statistical tests are applied in order to detect trends and breaks in the time series. {W}e show that during the 1974-2004 period, the stability of the mean discharge on the main stem in {O}bidos is explained by opposite regional features that principally involve {A}ndean rivers: a decrease in the low stage runoff, particularly important in the southern regions, and an increase in the high stage runoff in the northwestern region. {B}oth features are observed from the beginning of the nineties. {T}hese features are also observed in smaller meridian sub-basins in {P}eru and {B}olivia. {M}oreover we show that the changes in discharge extremes are related to the regional pluriannual rainfall variability and the associated atmospheric circulation as well as to tropical large-scale climatic indicators.},
  keywords = {{A}mazon basin ; {D}ischarge trend ; {R}ainfall and runoff variability ; {B}razil ; {P}eru ; {B}olivia},
  booktitle = {},
  journal = {{J}ournal of {H}ydrology},
  volume = {375},
  numero = {3-4},
  pages = {297--311},
  ISSN = {0022-1694},
  year = {2009},
  DOI = {10.1016/j.jhydrol.2009.03.004},
  URL = {https://www.documentation.ird.fr/hor/fdi:010048252},
}