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DIGITAL.CSIC
Article . 2016 . Peer-reviewed
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Riesgos hidrológicos

Authors: Benito, Gerardo;

Riesgos hidrológicos

Abstract

Las inundaciones catastróficas ocurridas en España durante la segunda mitad de los años 90 han puesto de manifiesto la necesidad de disponer de datos hidrológicos sobre crecidas dentro de un marco temporal más amplio del que ofrecen los datos disponibles en las estaciones de aforo. Las técnicas paleohidrológicas de reconstrucción de paleocrecidas ofrecen información sobre la variabilidad hidrológica de las avenidas extraordinarias para periodos que pueden oscilar entre 100 y 10.000 años. En el presente trabajo se exponen los avances y las nuevas técnicas paleohidrológicas para la reconstrucción del registro de paleocrecidas de gran magnitud. En esta reconstrucción se utilizará el registro estratigráñco y geomorfológico de los depósitos de inundación(arenas y limos) y la información de avenidas históricas. Los cálculos hidráulicos de las paleocrecidas se realizan utilizando el modelo HEC- 2, tomando como indicadores de elevación mínima del agua durante el caudal punta la altura de los depósitos de avenida a lo largo de un tramo fluvial, así como las referencias históricas existentes. El análisis de la frecuencia de inundaciones (T=100, 500, 1000 y 5000 años) se realiza mediante la combinación de datos instrumentales, crecidas históricas y paleocrecidas utilizando métodos existentes de ajuste de funciones de distribución, como por ejemplo los algoritmos de Máxima Verosimilitud. La determinación de los caudales asociados a crecidas con largos periodos de retorno presenta una aplicación inmediata al análisis de riesgos y la seguridad de presas.

CSIC - Centro de Ciencias Medioambientales (CCMA)

9 páginas y 3 figuras

Peer reviewed

Country
Spain
Related Organizations
Keywords

Inundaciones, Riesgos hidrológicos, Análisis de frecuencia, Paleocrecidas

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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!
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