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Pertinent Spatio-temporal Scale of Observation to Understand Suspended Sediment Yield Control Factors in the Andean Region: the Case of the Santa River (Peru) : Volume 17, Issue 11 (26/11/2013)

By Morera, S. B.

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Book Id: WPLBN0004010950
Format Type: PDF Article :
File Size: Pages 17
Reproduction Date: 2015

Title: Pertinent Spatio-temporal Scale of Observation to Understand Suspended Sediment Yield Control Factors in the Andean Region: the Case of the Santa River (Peru) : Volume 17, Issue 11 (26/11/2013)  
Author: Morera, S. B.
Volume: Vol. 17, Issue 11
Language: English
Subject: Science, Hydrology, Earth
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


APA MLA Chicago

Guyot, J., Condom, T., Vauchel, P., Crave, A., Morera, S. B., & Galvez, C. (2013). Pertinent Spatio-temporal Scale of Observation to Understand Suspended Sediment Yield Control Factors in the Andean Region: the Case of the Santa River (Peru) : Volume 17, Issue 11 (26/11/2013). Retrieved from

Description: Geosciences Environnement Toulouse, 14 avenue Edouard-Belin, Toulouse, France. Hydro-sedimentology development is a great challenge in Peru due to limited data as well as sparse and confidential information. This study aimed to quantify and to understand the suspended sediment yield from the west-central Andes Mountains and to identify the main erosion-control factors and their relevance. The Tablachaca River (3132 km2) and the Santa River (6815 km2), located in two adjacent Andes catchments, showed similar statistical daily rainfall and discharge variability but large differences in specific suspended-sediment yield (SSY). In order to investigate the main erosion factors, daily water discharge and suspended sediment concentration (SSC) datasets of the Santa and Tablachaca rivers were analysed.

Mining activity in specific lithologies was identified as the major factor that controls the high SSY of the Tablachaca (2204 t km2 yr−1), which is four times greater than the Santa's SSY. These results show that the analysis of control factors of regional SSY at the Andes scale should be done carefully. Indeed, spatial data at kilometric scale and also daily water discharge and SSC time series are needed to define the main erosion factors along the entire Andean range.

Pertinent spatio-temporal scale of observation to understand suspended sediment yield control factors in the Andean region: the case of the Santa River (Peru)

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