@article{fdi:010071062,
  title = {{T}he impact of extreme {E}l {N}i(n)over-tildeo events on modern sediment transport along the western {P}eruvian {A}ndes (1968-2012)},
  author = {{M}orera, {S}. {B}. and {C}ondom, {T}homas and {C}rave, {A}. and {S}teer, {P}. and {G}uyot, {J}. {L}.},
  editor = {},
  language = {{ENG}},
  abstract = {{C}limate change is considered as one of the main factors controlling sediment fluxes in mountain belts. {H}owever, the effect of {E}l {N}ino, which represents the primary cause of inter-annual climate variability in the {S}outh {P}acific, on river erosion and sediment transport in the {W}estern {A}ndes remains unclear. {U}sing an unpublished dataset of {S}uspended {S}ediment {Y}ield ({SSY}) in {P}eru (1968-2012), we show that the annual {SSY} increases by 3-60 times during {E}xtreme {E}l {N}ino {E}vents ({EENE}) compared to normal years. {D}uring {EENE}, 82% to 97% of the annual {SSY} occurs from {J}anuary to {A}pril. {W}e explain this effect by a sharp increase in river water discharge due to high precipitation rates and transport capacity during {EENE}. {I}ndeed, sediments accumulate in the mountain and piedmont areas during dry normal years, and are then rapidly mobilized during {EENE} years. {T}he effect of {EENE} on {SSY} depends on the topography, as it is maximum for catchments located in the {N}orth of {P}eru (3-7 degrees {S}), exhibiting a concave up hypsometric curve, and minimum for catchments in the {S}outh (7-18 degrees {S}), with a concave down hypsometric curve. {T}hese findings highlight how the sediment transport of different topographies can respond in very different ways to large climate variability.},
  keywords = {{PEROU} ; {ANDES}},
  booktitle = {},
  journal = {{S}cientific {R}eports - {N}ature},
  volume = {7},
  numero = {},
  pages = {art. 11947 [14 p.]},
  ISSN = {2045-2322},
  year = {2017},
  DOI = {10.1038/s41598-017-12220-x},
  URL = {https://www.documentation.ird.fr/hor/fdi:010071062},
}