Bed-material transport estimated from channel surveys: Vedder River, British Columbia
British Columbia ; Canada ; Capacité de charge ; Cours d'eau ; Débit de pointe ; Fluviatile ; Géométrie hydraulique ; Méthodologie ; Transport sédimentaire
British Columbia ; Canada ; Carrying capacity ; Channel geometry ; Extreme discharge ; Fluvial processes ; Methodology ; Sediment transport ; Stream
This study investigates the possibility to estimate bed-material bed-material transport by analysis of morphological changes along a river channel, by assessment of erosion and deposition in Vedder River, British Columbia.
Gravel transport and morphological change in braided Sunwapta River, Alberta, Canada
Alberta ; Braided stream ; Canada ; Carrying capacity ; Channel geometry ; Fluvial erosion ; Fluvial processes ; River bed ; Sediment budget ; Sediment transport
Alberta ; Bilan sédimentaire ; Canada ; Capacité de charge ; Erosion fluviatile ; Fluviatile ; Géométrie hydraulique ; Lit anastomosé ; Lit fluvial ; Transport sédimentaire
The relation between morphological change and patterns of variation in bedload transport rate in braided streams was observed by repeated, daily topographic surveys over a 25 day study period in a 60 m reach of the proglacial Sunwapta River, Alberta
The influence of microform bed roughness elements on flow and sediment transport in gravel bed rivers : comment on a paper by Marwan A. Hassan and Ian Reid
Capacité de charge ; Ecoulement ; Fluviatile ; Hydrologie fluviale ; Transport sédimentaire ; Turbulence
The purpose of this discussion is two-fold : 1) to provide a further demonstration of the importance of treating the bedform-flow resistance-sediment transport system in a gravel-bed river as a dynamic interaction, as has been the case for many
years in the context of sand-bed rivers; and 2) to emphasize the importance of understanding this interaction and the feedback that controls it in terms of the characteristics of near-bed turbulence.
The AA. report observations of the magnitude, processes, and effects of fluvial sediment transport and deposition on the Pasig-Potrero River alluvial fan 6 years after the cataclysmic eruption of Mount Pinatubo. This analysis shows bedload transport
in volcanically disturbed rivers reflects higher transport capacities than in their nondisturbed counterparts, and that arid zone channels provide a better analog for predicting post-eruption bedload transport due to their high transport efficiency.
Channel geometry ; Confluent ; Model ; Roughness ; Runoff ; Sand ; Sediment load ; Sediment transport ; Stream ; Stream flow ; Sweden
and to investigate the short-term sediment transport patterns in the river. The numerical models were built and verified using extensive field data. Based on model outputs, observations are made about the velocity vectors and the secondary flow patterns. The main
sediment transport patterns in the river were also investigated by solving the sediment continuity equation for the total sediment load.
A three-dimensional flow model that uses the RNG turbulence model and a non-equilibrium wall function was applied to the River Klarälven in the southwest part of Sweden. The objectives were to study the nature of the flow in the river bifurcation
Lateral sediment transport by bedforms in a meander bend
Carrying capacity ; Denmark ; Earth surface processes ; Fluvial processes ; Jylland ; River bed ; Sediment transport ; Sedimentary structure
Capacité de charge ; Danemark ; Fluviatile ; Géomorphodynamique ; Jylland ; Lit fluvial ; Structure sédimentaire ; Transport sédimentaire
A case study has been carried out in the Danish river Gels Å in a bend with equilibrium point bar topography. The purpose is to map primary and secondary bedforms and bedform migration in a meander, and to measure the actual rate of the lateral
(lateral = perpendicular to the mean flow direction) transport in the bend.
Variability of bedload transport and channel morphology in a braided river hydraulic model
Carrying capacity ; Channel geometry ; Fluvial processes ; Meander ; Model ; River bed ; Stream
The objectives of this paper are: 1) to assess variability in bedload transport and channel morphology in a 1:50 hydraulic model of a braided river under replicate runs, where all the controlling variables are held constant; 2) to investigate
the replicability of experimental results; and 3) to determine the extent to which river morphology is a single-valued response to a particular set of controlling variables.
The load of organic carbon, nitrogen and phosphorus from two large drainage basins (River Kitka and River Oulanka) in NE Finland
The aim of this paper is to quantify the load of organic carbon, nitrogen and phosphorus from 2 large catchment areas, the River Kitka and the River Oulanka, and the transport of the nutrients into Lake Paanajärvi, a deep oligotrophic lake in NW
Russian Karelia. In both areas the annual leaching and transport of nutrients were highly dependent on the hydrological conditions.
Changes in the hydrology and sediment transport produced by large dams on the lower Ebro river and its estuary
Aménagement hydraulique ; Cours d'eau ; Ebro ; Espagne ; Estuaire ; Hydrologie fluviale ; Tarragona ; Transport sédimentaire ; Utilisation de l'eau ; Variation saisonnière
Ebro ; Estuary ; Fluvial hydrology ; Hydraulic works ; Seasonal variation ; Sediment transport ; Spain ; Stream ; Tarragona ; Water use
The aim of this paper is to analyse the changes in the hydrology and sediment transport in the lower Ebro river and its estuary as a consequence of dam construction and increased water uses in the basin. Changes at different time-scales
are specifically considered : long-term changes (years to decades), seasonal changes and daily changes. A critical analysis of the existing data on sediment transport in the present century is also presented.
Hillslopes, rivers, plows, and trucks : mass transport on Earth's surface by natural and technological processes
Action anthropique ; Cours d'eau ; Géomorphodynamique ; Mouvement de masse ; Technologie ; Transport sédimentaire ; Versant
Earth surface processes ; Human impact ; Mass movement ; Sediment transport ; Slope ; Stream ; Technology
Acción antrópica ; Corriente de agua ; Geomorfodinámica ; Movimiento de masa ; Tecnología ; Transporte sedimentario ; Vertiente
Most of the world's mass-action is generated by the motion of fluids of global or continental extent, as in atmospheric circulation or river flow. Technological mass-action exceeds that of all land-based geomorphic systems except rivers
. Technological systems with large mass-action tend to be comprised of discrete, self-powered units (e.g. trucks). Discretization of transported mass reflects the different locomotion strategy required for transport of solids on land, compared with the transport
requirements of spatially extensive fluids in nature. The principle of maximum entropy production may provide a framework for understanding the emergence of advective, technological mass-transport systems.
Déplacement du trafic dans des corridors de transport à longue distance fortement congestionnés
Stratégies pour des transports compatibles avec l'espace et l'environnement
Freight ; Germany ; Long-distance traffic ; Passengers ; Rail transport ; Rivertransport ; Road transport ; Territorial planning ; Traffic ; Transport
Allemagne ; Aménagement du territoire ; Fret ; Mode de transport ; Passagers ; Trafic ; Transport ; Transport ferroviaire ; Transport fluvial ; Transport routier
The study analyses potential shifts in long-distance traffic volumes (passengers and freight transport) in highly congested corridors from road to rail or inland waterways under consideration of capacity restraints on railways. - (MT)
Estimated transport of the suspended load of the River Malewa, Kenya, between 1931-1959
Action anthropique ; Analyse de régression ; Bassin-versant ; Capacité de charge ; Charge en suspension ; Cours d'eau ; Débit ; Erosion des sols ; Géographie physique ; Hydrologie fluviale ; Kenya ; Malewa ; Modèle ; Transport sédimentaire
The aim of this study is to evaluate the usefulness of a data set of the suspended sediment concentration in the River Malewa, Kenya. One important benefit of such an evaluation is to acquire fundamental knowledge about the transport characteristics
of this river, so that future management practices to decrease soil erosion are possible to evaluate. The A. uses regression models.
model computations of instantaneous active width and observation of time-integrated morphological active width. Understanding these differences can give insight into the nature of bedload transport in braided rivers and the relationship to morphological
The AA. compare theoretical predictions of active width in gravel-bed braided rivers with observations from Sunwapta River, (Alberta, Canada), and from a generic physical model of gravel braided rivers, to describe and measure trends and variability
in active width. From these empirical results, the AA. formulate a general relation that predicts active width over a range of braided river types and flow conditions. This paper also raises questions about differences between hydraulically-based numerical
Coastal environment ; Harbour ; River port ; Sea transport ; Transport
Littoral ; Port ; Port maritime ; Transport ; Transport maritime
Travail de synthèse axé sur les aspects littoraux du transport maritime : ports et façades, types de circulation maritime et flux de marchandises, flottes et construction navale. - (FC)
Generation, transport and deposition of suspended and dissolved material. Examples from Swedish rivers
Action anthropique ; Bassin-versant ; Charge en suspension ; Erosion des sols ; Géographie physique ; Hydrologie ; Suède ; Transport sédimentaire
The aim of this paper is to give examples of erosion studies made in Sweden on different scales in order to bring into focus the role of sediment transport in Swedish rivers and to form a background for future studies of pollution. Two main sources
of data have been used in the analyses : 1) a study in small plots and basins in the Verkaa research basin, about 35 km north of Stockholm, and 2) the nationwide network for the measurement of transport of sediment and dissolved material.
transport events associated with the daily rise and fall in stream discharge were investigated. This paper reports the results of this study designed to describe fully the adjustment of river bed and turbulent flow to the unsteady passage of a pebble bedload.
Coarse bedload transport dynamics are investigated utilizing hydrodynamic and sediment transport data obtained in an extensively instrumented study reach located in Sqaw Creek, Montana, USA. During 1991 and 1992, a number of discrete bedload
A dunai folyami aruszallitas foldrajzi kapcsolatai és annak magyar vonatkozasai. (Geographical aspects of the transportation of goods on the Danube river and related Hungarian problems)
Danube ; Danube-Main-Rhin ; Europe ; Europe centrale ; Géographie de l'Europe ; Hongrie ; Infrastructure déficiente ; Prévision ; Réseau fluvial projeté ; Transport ; Transport fluvial
The paper consisting of two parts wishes to point out by citing numerous examples that the transportation of goods on the rivers in the Danubian Basin due to the lack of infrastructural services, lags far behind the Main and the Rhein. Within a few
Sustained storage and transport of hydraulic gold mining sediment in the Bear River, California
Action anthropique ; Bassin-versant ; California ; Etats-Unis ; Exploitation minière ; Fluviatile ; Modèle ; Or ; Pollution ; Transport sédimentaire
California ; Catchment area;Watershed ; Fluvial processes ; Gold ; Human impact ; Mining activity ; Model ; Pollution ; Sediment transport ; United States
This study examines the large deposits of hydraulic gold mining sediment and reevaluates Gilbert's (1917) classic model of sediment transport in a symmetrical wave that is based on hydraulic mining sediment primarily in the Yuba Basin. Sustained
storage and transport of hydraulic mining sediment in the Bear Basin are documented and a revised model of sediment transport is proposed.
Sediment transport processes in pool-riffle sequences
Carrying capacity ; Channel geometry ; England ; Flood ; Fluvial processes ; Grain size distribution ; Hydrodynamics ; Northumberland ; River bed ; Sediment transport ; Sedimentary structure ; Stream ; Threshold ; Tracer ; United Kingdom
Capacité de charge ; Cours d'eau ; Crue ; England ; Fluviatile ; Granulométrie ; Géométrie hydraulique ; Hydrodynamique ; Lit fluvial ; Northumberland ; Royaume-Uni ; Seuil ; Structure sédimentaire ; Traceur ; Transport sédimentaire
is explored in more detail using obsevations of sediment transport from the regulated River North Tyne.
This paper reviews the published data for sediment transport in pool-riffle sequences which suggests that a velocity or shear stress reversal hypothesis does not explain all of the published evidence of sediment transport. This conclusion
The first part of the article describes Tisza River valley as part and a special region of the Great Hungarian Plain. The physical geographical and economic processes shaping the transport network and the changing importance of the Tisza River
are highlighted. The second part of the paper investigates the characteristics of different branches of transport (road, railway etc.) in the area, and finally the structure of freight and passenger traffic are analysed. - (JS)