Analysis of the influence of gully erosion in the flow pattern of catchment streams, Southeastern Brazil

Auteurs :
MARTINELI COSTA, F.
DE ALMEIDA PRADO BACELLAR, L.

Description :
In order to analyze the influence of erosion in the hydrological behavior of small streams, two similar catchments of the upper portion of the Velhas River were simultaneously monitored throughout a hydrological year. Rainfall, stream flow and hydrochemical data were sytematically collected. The results showed that the eroded catchment presented smaller baseflow rates and bigger but short-lived stormflows. This contrasting flow regime is attributed to the gully, which is causing the partial withdraw of the regolith and the exposure of weathered rock.


Type de document :
Article de périodique

Source :
Catena (Giessen), issn : 0341-8162, 2007, vol. 69, n°. 3, p. 230-238, nombre de pages : 9, Collation : Illustration, Références bibliographiques : 24 ref.

Date :
2007

Editeur :
Pays édition : Allemagne, Cremlingen-Destedt, Catena