000165679 001__ 165679
000165679 005__ 20260113234334.0
000165679 0247_ $$2doi$$a10.1016/j.geomorph.2021.107801
000165679 0248_ $$2sideral$$a124434
000165679 037__ $$aART-2021-124434
000165679 041__ $$aeng
000165679 100__ $$aFerrer-Boix, Carles
000165679 245__ $$aAlluviation of a side-channel by bed material load. Field measurements and modelling
000165679 260__ $$c2021
000165679 5060_ $$aAccess copy available to the general public$$fUnrestricted
000165679 5203_ $$aIn this research, we explore the alluviation process of an artificial side-channel built in August 2015 and designed to alleviate bank erosion risks on the main river. The study area is located on the lower Gállego River, a meandering-wandering gravel-bed river draining the Southern Pyrenees. This river reach is still dynamic (i.e. chutes, meander migration and other riverine processes are often observed during floods) despite the presence of three dams in the upper catchment, encroachments and extensive mining during the 1960s–80s that led to severe incision. In this research, we focus on the effects of bankfull-like flood events (Qpeak = 354 m3/s) between February 2016 and February 2017, which alluviated 62% of the side-channel. This research aims at finding the physical mechanisms that explain the alluviation process and at putting them in the general context of the current geomorphic trend of the Gállego River in response to past and ongoing impacts.
The causes of the alluviation are studied through collecting and analysing field data, which in turn, are used as input in a novel modelling strategy that includes one-dimensional hydraulic modelling, semi-empirical expressions to obtain the sediment supply entering the side-channel system and a morphodynamic model able to deal with granular sediment mixtures in compound channels. The analyses of the numerical results along with the recent history of impacts and general channel pattern adjustments help us understand about the morphodynamics mechanisms responsible for the alluviation of the side-channel.
000165679 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttps://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
000165679 590__ $$a4.406$$b2021
000165679 591__ $$aGEOGRAPHY, PHYSICAL$$b13 / 50 = 0.26$$c2021$$dQ2$$eT1
000165679 591__ $$aGEOSCIENCES, MULTIDISCIPLINARY$$b52 / 202 = 0.257$$c2021$$dQ2$$eT1
000165679 592__ $$a1.207$$b2021
000165679 593__ $$aEarth-Surface Processes$$c2021$$dQ1
000165679 594__ $$a7.3$$b2021
000165679 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000165679 700__ $$aBoix Oliva, Júlia
000165679 700__ $$aMartín Vide, Juan Pedro
000165679 700__ $$0(orcid)0000-0002-9745-5866$$aOllero Ojeda, Alfredo$$uUniversidad de Zaragoza
000165679 7102_ $$13006$$2430$$aUniversidad de Zaragoza$$bDpto. Geograf. Ordenac.Territ.$$cÁrea Geografía Física
000165679 773__ $$g389 (2021), 107801 [16 pp.]$$pGeomorphology$$tGEOMORPHOLOGY$$x0169-555X
000165679 8564_ $$s4718799$$uhttps://zaguan.unizar.es/record/165679/files/texto_completo.pdf$$yPostprint
000165679 8564_ $$s944493$$uhttps://zaguan.unizar.es/record/165679/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint
000165679 909CO $$ooai:zaguan.unizar.es:165679$$particulos$$pdriver
000165679 951__ $$a2026-01-13-22:05:44
000165679 980__ $$aARTICLE