Histoire des débuts de l'aménagement fluvial réalisé en Hongrie sur les cours d'eau des Carpates, sujets à des crues soudaines de printemps (fonte des neiges). L'endiguement des cours d'eau, sur le territoire, a permis la protection de quelques
23600km, inondables. Description de l'aménagement hydraulique réalisé: barrages, réservoirs, canaux. Au niveau des conséquences: impact des modifications du régime fluvial sur les lits fluviaux, meilleures conditions de la navigation fluviale. Perspectives
Samoorganizacija rel'efa : struktura, funkcii, organizacija, upravlenie v geomorfologiceskih sistemah fljuvial'nogo tipa Auto-organisation du relief : structure, fonctions, organisation et contrôle dans les systèmes géomorphologiques fluviaux
of the relief self-regulation, structural mechanisms of fluvial systems self-organization and factor relativity of topography are described. Possibilities are outlined of the geomorphic processes control by indirect influence on the self-regulation mechanism
A definition of self-organization of a composite geomorphological system is given in relationship to the system's functioning, self-regulation, dynamic equilibrium. A significance of positive and negative feedback is shown for the process
Dam ; Fluvial dynamics ; Fluvial processes ; Hydraulic works ; Lower valley ; Poland ; River bed ; Stream ; Wisła
The changes of lower Vistula channel caused by human impact is discussed. The problem of XIXth century regulation works and Vistula channel daming at Włocławek is presented. The morphodynamic of the sand bars (mesoforms) on the different developed
reaches of lower Vistula (unregulated, regulated, downstream from the Włocławek dam) are introduced. On the basis of literature and own studies carried out in the lower Vistula channel, the hydrology of mesoforms constructed. The bed-load balance
Etudes géomorphologiques des bassins fluviaux. Analyse des géoimages des bassins fluviaux. Structure d'un bassin versant sur la base d'images photographiques. Processus gouvernant un système de bassin. Auto-régulation d'un processus de formation
Adjustments in river channel geometry associated with hydraulic discontinuities across the fluvial-tidal transition of a regulated river
Capacité de charge ; Cours d'eau ; Ecoulement fluvial ; England ; Granulométrie ; Géométrie hydraulique ; Hydrologie fluviale ; Lit fluvial ; Marée ; Profil transversal ; Royaume-Uni ; Transport sédimentaire ; Wales
Carrying capacity ; Channel geometry ; Cross section ; England ; Fluvial hydrology ; Grain size distribution ; River bed ; Sediment transport ; Stream ; Stream flow ; Tide ; United Kingdom ; Wales
. The extent to which recent flow regulation has affected channel form in each of these 4 stretches is also considered.
This paper is a case study of the changes in the Raba, a mountain gravel-bed river, which have followed its channel regulation during the present century, especially in the last 40 years. The paper has two main aims: 1) to show the complex nature
of the mechanisms involved in approaching a new equilibrium; and 2) to discuss disadvantages of the applied regulation scheme being revealed on the catchment and regional scales, and to utilize them as a geomorphological lesson for river engineering.
Morphology and sedimentology of a tributary confluence bar in a regulated river : north Tyne, U. K.
Accumulation fluviatile ; Barre fluviale ; Cours d'eau ; England ; Géographie physique ; Hydrologie fluviale ; Lit fluvial ; North Tyne ; Royaume-Uni ; Régularisation
Etude de la forme et de la structure d'une barre fluviale dans la Rivière North Tyne. Mise en évidence de leurs liens avec les variations de conditions hydrauliques imposées par la régularisation de la rivière.
Sediment transport in a highly regulatedfluvial system during two consecutive floods (lower Ebro River, NE Iberian Peninsula)
Dam ; Ebro ; Environmental degradation ; Flood ; Fluvial erosion ; Hydraulic works ; Mediterranean area ; Sediment load ; Sediment transport ; Spain ; Stream ; Suspended load
The transfer of sediment through a highly regulated large fluvial system (lower Ebro River) was analysed during 2 consecutive floods by means of sediment sampling. Suspended sediment and bedload transport were measured upstream and downstream
of large reservoirs. These results illustrate the magnitude of the sediment deficit in the lower Ebro River. They can be use for the design and implementation of restoration programmes in large, highly degraded fluvial ecosystems, especially
Effects of flow regulation on flow regime in the Murrumbidgee River, South Eastern Australia : an assessment using a daily estimation hydrological model
Aménagement hydraulique ; Australie ; Cours d'eau ; Crue ; Ecoulement fluvial ; Gestion de l'eau ; Modèle ; New South Wales ; Régime hydrologique
In this paper, modelled hydrological data are used to quantify the effects of regulation on the flow regime of the lower Murrumbidges River in the period 1970-1988. The comparison of modelled natural and regulated daily flows shows the magnitude
of changes to mean and seasonal flows, flood peaks and flow duration. The AA. compared historical regulated data with modelled natural data over a common 29 year period to eliminate the effect of secular climate change on flow data and the daily time-step
This paper examines the nature of channel width reduction and associated bench forms along a lowland sector of a regulated, single-thread river, the River Dee, North Wales, UK. Such patterns are suggested to have important implications for riparian
The migration pattern of spawners of brown trout (Salmo trutta) in relation to water flow was analysed by radio-tracking in the regulated River Gudbrandsdalslågen, Norway. By being able to follow individual fish on their migration, the AA. were able
Hydrological impacts of flow regulation associated with the Upper Nepean Water Supply Scheme, NSW
Aménagement fluvial ; Australie ; Charge en suspension ; Crue ; Hydrologie fluviale ; New South Wales ; Précipitation ; Régime hydrologique ; Sécheresse
Australia ; Drought ; Flood ; Fluvial hydrology ; Hydrological regime ; New South Wales ; Precipitation ; River management ; Suspended load
The Upper Nepean Water Supply Scheme (4 large dams, 2 small dams and 2 diversion weirs) is outlined before secular rainfall changes in the Upper Nepean Catchment are discussed. The effects of flow regulation on flood frequency and flow duration
Waves and sandbar erosion in the Grand Canyon: applying coastal theory to a fluvial system
Arizona ; Canyon ; Coastal dynamics ; Current ; Erosion ; Fluvial processes ; Hydraulic works ; Hydrodynamics ; Model ; Sediment transport ; United States
The purpose of this paper is to evaluate the relative importance of surface-gravity waves on sandbar stability in Grand Canyon, in contrast to unidirectional currents that are the primary focus of most fluvial studies. A second objective
is to evaluate the utility of coastal theory and methodology in the investigation of river sandbar stability. Such information may be useful in the development of management strategies for the Colorado River below Grand Canyon Dam and other regulated rivers where
Floodplain ; Fluvial hydrology ; Poland ; Regularization ; River bed ; Sediment load ; Sediment transfer ; Stream ; Wisła
Caractéristiques de la vallée, de la plaine d''inondation et du lit. Hydrologie de la Vistule. Processus dans la vallée régulée de la Vistule - changements de configuration et de fforme du lit fluvial. Transport de sédiments, dépôts et charges.
The use of short-lived radionuclides to quantify transitional bed material transport in a regulated river
Aménagement hydraulique ; Analyse isotopique ; Barrage ; Cours d'eau ; Dynamique fluviale ; Etats-Unis ; Géochimie ; New England ; Traceur ; Transport sédimentaire ; Vermont
Dam ; Fluvial dynamics ; Geochemistry ; Hydraulic works ; Isotope analysis ; New England ; Sediment transport ; Stream ; Tracer ; United States of America
variations in bed sedimentation. They measure Be 7 activities in approximately monthly samples from point bar and streambed sediments in one unregulated and one regulated stream. Results also show that the length scale of the downstream impact of dam
Review of research in fluvial geomorphology 2010–2011
Aménagement hydraulique ; Années 2006-2011 ; Bibliographie ; Cours d'eau ; Dynamique fluviale ; Erosion des berges ; Géométrie hydraulique ; Méthodologie ; Restauration écologique ; Transport sédimentaire
Bank erosion ; Bibliography ; Channel geometry ; Ecological restoration ; Fluvial dynamics ; Hydraulic works ; Methodology ; Sediment transport ; Stream
Aprovechamiento hidráulico ; Bibliografía ; Corriente de agua ; Dinámica fluvial ; Erosión de las riberas ; Geometria hidráulica ; Metodología ; Transporte sedimentario
/advances in methodology in fluvial geomorphology; fluvial hydraulics; gully and hillslope sediment transfer; modelling the fluvial environment; river regulation, channel change and human influences; river management, restoration and effects of vegetation
This progress report on the discipline of fluvial geomorphology for the calendar years 2010–2011 extends the analysis of papers previously published during the calendar years 2006–2007 and 2008–2009, in order to make comparisons and to assess
whether there were changes in the direction of this research. In comparing the three two-year periods covering 2006–2011, the numbers of papers in each of 10 subdisciplines within fluvial geomorphology (fluvial sediment transport; soil erosion and control
on fluvial systems; fluvial chronology; and bank erosion in fluvial systems) changed markedly.
Channel geometry ; Concept ; Fluvial hydrology ; Hydrosystem ; River management ; Stream ; United States of America
Aprovechamiento fluvial ; Concepto ; Corriente de agua ; Estados Unidos ; Geometria hidráulica ; Hidrología fluvial ; Hidrosistema
relaxation times. Recognizing converging trends of stream power or slope and sediment supply as common (but far from inevitable) side effects rather than self-regulation has important implications for interpreting and predicting fluvial systems, and for river
This paper describes changes in flood flows passing the Raba, a mountain gravel-bed river of the temperate zone, subsequent to regulation of its channel. The results of the case study are next confronted with data from other Carpathian rivers
. The purpose of the paper is to show and explain the modifying effect of channel regulation upon flood flows, and to discuss implications of the transformation of flood flows for river engineering and environmental planning.