Santini W.,CIRAD - Agricultural Research for Development |
Martinez J.-M.,CIRAD - Agricultural Research for Development |
Espinoza-Villar R.,University of Brasilia |
Cochonneau G.,CIRAD - Agricultural Research for Development |
And 7 more authors.
IAHS-AISH Proceedings and Reports | Year: 2014
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. Copyright © 2014 IAHS Press.