Bed-material mobility in a large river below dams

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dc.contributor.author Vericat, Damià
dc.contributor.author Batalla, Ramon J.
dc.contributor.author Garcia, C.
dc.date.accessioned 2011-07-05T10:36:20Z
dc.date.available 2011-07-05T10:36:20Z
dc.date.issued 2008
dc.identifier.citation Vericat , D , Batalla , R J & Garcia , C 2008 , ' Bed-material mobility in a large river below dams ' Geodinamica Acta , vol 21 , no. 1-2 , pp. 1-2 . , 10.3166/ga.21.3-10 en
dc.identifier.issn 0985-3111
dc.identifier.other PURE: 168966
dc.identifier.other dspace: 2160/7134
dc.identifier.uri http://hdl.handle.net/2160/7134
dc.description Verticat, D., Batalla, R. J., Garcia, C. (2008). Bed-material mobility in a large river below dams. Geodinamica Acta, 21 (1-2), 3-10. en
dc.description.abstract The mobility of river-bed surface particles is examined in the lower Ebro River downstream from dams that were closed several decades ago. Mobility is analysed by comparing photographs of painted bed areas taken before and after the 2003-2004 flood season, and also by comparing lines of painted particles after the floods. The peak of the maximum flood had a recurrence interval of 2 years. Medium and coarse gravels were widely exported from all the study reach, reflecting a disequilibrium between the competence of the flow to entrain and transport them and the rate of supply from upstream. By contrast, very coarse gravels and larger particles remained immobile, since floods were not competent enough to mobilise them. The partial entrainment of surface particles caused a coarsening of the river-bed surface, even in areas where sediments are loose and the river-bed is highly active during small floods. en
dc.format.extent 2 en
dc.language.iso eng
dc.relation.ispartof Geodinamica Acta en
dc.subject river-bed material en
dc.subject sediment mobility en
dc.subject painted areas en
dc.subject coarsening en
dc.subject dams en
dc.title Bed-material mobility in a large river below dams en
dc.type Text en
dc.type.publicationtype Article (Journal) en
dc.identifier.doi http://dx.doi.org/10.3166/ga.21.3-10
dc.contributor.institution Centre for Catchment and Coastal Research en
dc.description.status Peer reviewed en


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