Artículo
Suspended sediment concentration controlling factors: an analysis for the Argentine Pampas region
Fecha de publicación:
09/2016
Editorial:
Iahs Press
Revista:
Hydrological Sciences Journal-Journal Des Sciences Hydrologiques
ISSN:
0262-6667
e-ISSN:
2150-3435
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
In the Argentine Pampas region, there is little information about sediment concentration in agricultural catchments. The aims of this work are: (1) to analyse fluctuations in sediment concentration and discharge, as a first attempt to characterize hysteresis patterns; and (2) to study sediment concentration controlling factors and to assess the importance of these factors using principal component analysis and a multiple regression model. Twenty-five events registered during 4 years in a 560 ha gauged basin of Argentina were studied. Analysis of data suggested a positive clockwise pattern. The multiple regression model was performed with three factors obtained by principal component analysis: runoff, precipitation and antecedent conditions. The model explained 83% of the variability of sediment concentration. The runoff factor contributed to modelled sediment concentration with the highest magnitude, followed by precipitation and antecedent condition factors. Although the watershed is under conservation tillage, rill erosion seems to be the main source of sediment concentration.
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Articulos(CCT - TANDIL)
Articulos de CTRO CIENTIFICO TECNOLOGICO CONICET - TANDIL
Articulos de CTRO CIENTIFICO TECNOLOGICO CONICET - TANDIL
Citación
Ares, María Guadalupe; Varni, Marcelo Raúl; Chagas, C.; Suspended sediment concentration controlling factors: an analysis for the Argentine Pampas region; Iahs Press; Hydrological Sciences Journal-Journal Des Sciences Hydrologiques; 61; 12; 9-2016; 2237-2248
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