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Balance sedimentario del embalse de Ribarroja

Authors: A. Tena; D. Vericat; R.J. Batalla;

Balance sedimentario del embalse de Ribarroja

Abstract

El objetivo de este estudio ha sido construir un balance de sedimentos del embalse de Ribarroja, situado en el tramo inferior del río Ebro. Para ello, se han analizado datos continuos de caudal y transporte de sedimentos en suspensión tomados en los principales ríos que desembocan en el embalse, así como en la salida de la presa, para el período 2008-2011. La carga de sedimentos estimada aguas arriba del embalse de Mequinenza fue de 0.66 × 106 t a-1, mientras que la salida estimada fue de 0.04 × 106 t a-1. El aporte de sedimentos proveniente de los grandes afluentes pirenaicos, aunque altamente regulados, Segre y Cinca fue de 0,16 × 106 t a-1, mientras que los ríos intermitentes que fluyen naturalmente desde la Cordillera Ibérica (Matarraña y Algars) suministraron una carga media de 760 t a-1. La carga de sedimentos en suspensión atrapada en los embalses de Mequinenza y Ribarroja para el período de estudio se estimó en 0,78 × 106 t a-1, lo que implica una reducción de ca. 95% de la carga de sedimentos del río. Los resultados ilustran el papel de los embalses en la interrupción de la transferencia de sedimentos en el tramo bajo del Ebro, en un contexto de déficit sedimentario estructural, tras los cambios generalizados de uso del suelo (reforestación) que se produjeron en la cuenca a partir de los años cuarenta del siglo pasado.

Country
Spain
Related Organizations
Keywords

Geography (General), Balance sedimentario, embalses, río ebro, G1-922, Sedimento en suspensión, Embalses, Río Ebro, balance sedimentario, sedimento en suspensión

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
2
Average
Average
Average
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