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dc.contributor.authorChartrand, Shawn M.
dc.contributor.authorJellinek, A. Mark
dc.contributor.authorHassan, Marwan A.
dc.contributor.authorFerrer Boix, Carles
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d’Enginyeria Gràfica i de Disseny
dc.date.accessioned2023-04-20T13:30:57Z
dc.date.available2023-04-20T13:30:57Z
dc.date.issued2023-01-04
dc.identifier.citationChartrand, S.M. [et al.]. Coupling between downstream variations of channel width and local pool–riffle bed topography. "Earth Surface Dynamics", 4 Gener 2023, vol. 11, núm. 1, p. 1-20.
dc.identifier.issn2196-632X
dc.identifier.urihttp://hdl.handle.net/2117/386478
dc.description.abstractA potential control of downstream channel width variations on the structure and planform of pool–riffle sequence local bed topography is a key to the dynamics of gravel bed rivers. How established pool–riffle sequences respond to time-varying changes in channel width at specific locations, however, is largely unexplored and challenging to address with field-based study. Here, we report results of a flume experiment aimed at building understanding of how statistically steady pool–riffle sequence profiles adjust to spatially prescribed channel width changes. We find that local bed slopes near steady-state conditions inversely correlate with local downstream width gradients when the upstream sediment supply approximates the estimated transport capacity. This result constrains conditions prior to and following the imposed local width changes. Furthermore, this relationship between local channel bed slope and downstream width gradient is consistent with expectations from scaling theory and a broad set of field-based, numerical, and experimental studies (n=88). However, upstream disruptions to coarse sediment supply through actions such as dam removal can result in a transient flipping of the expected inverse correlation between bed slope and width gradient, collectively highlighting that understanding local conditions is critical before typically implemented spatial averaging schemes can be reliably applied.
dc.format.extent20 p.
dc.language.isoeng
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectÀrees temàtiques de la UPC::Enginyeria civil::Geologia::Hidrologia
dc.subject.lcshRivers
dc.subject.lcshTopographical surveying
dc.titleCoupling between downstream variations of channel width and local pool–riffle bed topography
dc.typeArticle
dc.subject.lemacCursos d'aigua
dc.subject.lemacTopografia
dc.contributor.groupUniversitat Politècnica de Catalunya. CRAHI - Centre de Recerca Aplicada en Hidrometeorologia
dc.identifier.doi10.5194/esurf-11-1-2023
dc.relation.publisherversionhttps://esurf.copernicus.org/articles/11/1/2023/
dc.rights.accessOpen Access
local.identifier.drac35067709
dc.description.versionPostprint (published version)
local.citation.authorChartrand, S. M.; Jellinek, A.; Hassan, M. A.; Ferrer-Boix, C.
local.citation.publicationNameEarth Surface Dynamics
local.citation.volume11
local.citation.number1
local.citation.startingPage1
local.citation.endingPage20


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