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  • 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
  • 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.
  • 1992
  • The influence of microform bed roughness elements on flow and sediment transport in gravel bed rivers : a reply
  • Carrying capacity ; Flood ; Flow ; Fluvial hydrology ; Fluvial processes ; River bed ; Sediment transport ; Turbulence
  • 1992
  • Estimation of flow resistance in gravel-bedded rivers : a physical explanation of the multiplier of roughness length
  • Fluvial processes ; Grain size distribution;Granulometry ; Gravel ; Hydrodynamics ; River bed ; Roughness ; Sand ; Sediment load ; Turbulence
  • In this paper, two contrasting approaches are used to suggest that the multiplier of characteristic grain size is attribuable to the effect of small-scale form resistance, reflecting the occurrence of microtopographic bedforms in gravel-bedded
  • environments. Apart from improving the capacity to determine friction factors for velocity and discharge estimation, the findings have implications in general for the initial motion of gravelly bed material.
  • 1992
  • Burst-like sediment suspension events in a Sand bed river
  • British Columbia ; Canada ; Fluvial processes ; Ground survey ; Hydrodynamics ; River bed ; Sand ; Stream ; Suspended load ; Turbulence
  • L'A. propose des données sur les mouvements de turbulence dans le lit sablonneux de la Fraser River près de Mission, Colombie britannique, Canada. Il étudie également le rôle de ces mouvements sur la charge en suspension.―(A. Peyre).
  • 1992
  • Temporal variations in bedload transport rates and sediment storage in gravel-bed rivers
  • of the implications of variability for ideas of equilibrium in river channels.
  • 1992
  • Virtual rate and mean distance of travel of individual clasts in gravel-bed channels
  • Travel distance in gravel-bed rivers of tagged particles of various sizes are related to excess stream power estimated for peak discharge. Mean distance of movement, irrespective of grain size, is weakly correlated with stream power, especially near
  • the threshold of movement. There may be several reasons for the weak correlation, including variable effects of bed structure, varying magnitudes of sediment mobilizing events and sampling problems. Nonetheless, an underlying general relation is indicated
  • 1992
  • Textural characteristics of the Krishna River sediments, India
  • To evaluate the magnitude of variation in grain size distribution in the Krishna river, bed sediments and suspended sediments collected along the length of the river have been studied. There are both temporal and seasonal variation in the grain size
  • distribution of suspended sediments. The statistical parameters show the change along the river in a non-linear fashion which may be due to human interference and due to different types of sediments contributed by tributaries to the Krishna river.
  • 1992
  • Late Holocene river courses and early Polynesian sites, Lower Waimakariri River, Canterbury
  • Alluvial channels ; Alluvial cone ; Artifact ; C14 dating ; Coastal environment ; Fluvial dynamics ; Holocene ; New Zealand ; Quaternary ; River bed ; Stream
  • This paper gives a brief synopsis of alluvial fan and river course development during latest Holocene time, and then discusses the distribution of known Polynesian sites, relative to paleochannels. The sites are interpreted as being of early
  • 1992
  • Gravel ; Ground survey ; Hydrodynamics ; Methodology ; Mississippi ; River bed ; Roughness ; Sediment load ; Stream ; United States
  • The A. has analysed bed load transport rates during rising and falling stages of two small streams (Godwin Creek Research Watershed, Nothern Mississippi, USA)
  • 1992
  • Secondary flow in anabranch confluences of a braided, graveled-bed stream
  • This paper reports the results of field measurements made with the objective of documenting the primary (downstream) and secondary (cross-stream) flow fields. Measurements of the velocity components were made in two, active, braided river anabranch
  • confluences with a simple Y-shaped plan form, in the gravelly Sunwapta River.
  • 1992
  • The character of the fine fractions of the bottom sediments of the Bohemian part of the Labe (Elbe) river
  • of the river catchment geological setting, of its relief and of weathering on the composition of the particulate bed material. As it is generally accepted that the smaller grain-size of the sediment fraction binds the greatest amount of trace toxic elements
  • Part of the project to study the distribution and transport of pollutants in the Bohemian part of the Labe river involved the determination of the mineral association in recent sediments, the grain-size distribution and expression of the effect
  • 1992
  • Carrying capacity ; Denmark ; Earth surface processes ; Fluvial processes ; Jylland ; River bed ; Sediment transport ; Sedimentary structure
  • 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
  • 1992
  • Dam ; Fluvial dynamics ; Fluvial processes ; Hydraulic works ; Lower valley ; Poland ; River bed ; Stream ; Wisła
  • 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
  • 1992
  • Fluvial processes ; Grain size distribution;Granulometry ; River bed ; Romania ; Sedimentology ; Stream
  • This paper deals with the variability of the deposits and channel characteristics in longitudinal profile along the rivers Siret et Buzau. It is analysed also the grain size variability induced by the Carpathian tributaries.―(M. Vârlan).
  • 1992
  • Bratislava ; Czechoslovakia ; Danube ; Eighteenth Century ; Fluvial dynamics ; Fluvial processes ; Geomorphogenesis ; Historic map;Old chart ; Historical geography ; Nineteenth Century ; Place names ; River bed ; Slovakia ; Stream ; Twentieth
  • Petržalka, city part of Bratislava, was a system of isles on the right-bank of Danube river. The paper deals with reconstruction geomorphology and toponymy of the so-called « Croatian arm » of Danube from the beginning of 18th century to the present
  • 1992
  • Bavaria ; Fluvial dynamics ; Germany ; Hydrodynamics ; Indicator element ; Research technique ; River bed ; Sediment load ; Stream
  • This paper reports results from bedload transport investigations with active (radio) and passive (iron, magnetic) tracers in the Lainbach, a step-pool mountain river, in Bavaria, Southern Germany.
  • 1992
  • Coastal environment ; Fluvial processes ; Fractal geometry ; Geomorphology ; Methodology ; River bed ; Topography ; United States
  • In order to investigate sources of error in using the divider method to estimate the fractal dimension of geomorphic phenomena, the divider method is applied to two river channel traces, a topographic contour line and a coastline. Three sources
  • 1992
  • The morphology of graded gravel rivers : a network perspective
  • and river bed elevation at every point in the drainage basin.
  • 1992
  • California ; Discharge ; Fluvial erosion ; Fluvial processes ; Longitudinal section ; Oregon ; River bed ; Sediment transport ; Slope gradient ; United States
  • . The results suggest three general mechanisms by which bedrock channels erode: 1) vertical wearing of the channel bed due to stream flow; 2) scour by periodic debris flows; and 3) knickpoint propagation. Consequently, application of a single erosion law
  • 1992
  • Amur ; Delta ; Flood plain;High water bed ; Habarovsk ; Lake ; Lower valley ; River bed ; Russia ; Stream
  • 1992