Horizon 1 1 5 OS CH : Chapitres d'ouvrages scientifiques Sediment dynamics from the summit to the sea Publication - AISH International Symposium on Sediment Dynamics from the Summit to the Sea : ICCE2014 320-325 SEDIMENTATION FLUVIATILE MATIERE EN SUSPENSION EROSION METHODOLOGIE TELEDETECTION ESTIMATION BASSIN VERSANT COURS D'EAU ANDES AMAZONIE PEROU UCAYALI BASSIN VERSANT 2015 2014/12/11-14 Wallingford AISH fdi:010070648 ENG 367 10.5194/piahs-367-320-2015 https://www.documentation.ird.fr/hor/fdi:010070648 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/divers17-08/010070648.pdf Horizon (IRD) Formation of mountain ranges results from complex coupling between lithospheric deformation, mechanisms linked to subduction and surface processes: weathering, erosion, and climate. Today, erosion of the eastern Andean cordillera and sub-Andean foothills supplies over 99% of the sediment load passing through the Amazon Basin. Denudation rates in the upper Ucayali basin are rapid, favoured by a marked seasonality in this region and extreme precipitation cells above sedimentary strata, uplifted during Neogene times by a still active sub-Andean tectonic thrust. Around 40% of those sediments are trapped in the Ucayali retro-foreland basin system. Recent advances in remote sensing for Amazonian large rivers now allow us to complete the ground hydrological data. In this work, we propose a first estimation of the erosion and sedimentation budget of the Ucayali River catchment, based on spatial and conventional HYBAM Observatory network. 062MECEAU04 ; 064SEDIM ; 068EROSOL