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Simulation modelling of river channel erosion in River channel changes.

Simulation modelling of river channel erosion in River channel changes.

When is a River not a River ? Consideration of the legal definition of a river for geomorphologists practising in New South Wales, Australia

When is a River not a River ? Consideration of the legal definition of a river for geomorphologists practising in New South Wales, Australia
Australia ; Concept ; Definition ; Environmental management ; Geomorphology ; Legislation ; New South Wales ; Perception ; River bed ; Stream ; Water resources
This paper examines why the definition of a river is an important and ongoing management issue, and outlines the development of legal definitions of river. Finally, the role of fluvial geomorphology is discussed with respect to the definition
of a river and its channel. This analysis will reveal whether the existing legislative framework adequately reflects the physical realities of rivers and watercourses so as to facilitate their conservation.

Sedimentatieverschijnselen nabij een rivier stuw op de Markrivier Sedimentation phenomena near a river dam on the river Mark

Sedimentatieverschijnselen nabij een rivier stuw op de Markrivier Sedimentation phenomena near a river dam on the river Mark
To alter the natural river behaviour, many regulation projects have been carried out on various river systems. However, until now very few studies on the reactions of the rivers to the imposed regulating systems have been undertaken. - (Author).

Anabranched rivers

Anabranched rivers
Channel geometry ; China ; Fluvial dynamics ; Fluvial processes ; Meander ; Model ; River bed ; Statistics ; Stream ; Stream flow
Since the anabranched river pattern is the most typical one in the middle and lower reaches of the Yangtze River (Changjiang) as well as in many other rivers in China, a systematic study on the formation cause of the anabranched river pattern has
been made in recent years, including field observations, modeling experiments in four river models under different boundary conditions, the analyses of river pattern formation and transformation etc. In this paper, some of the detailed results obtained

Some thermodynamic criteria for river channel changes

Some thermodynamic criteria for river channel changes
Fluvial dynamics ; Geosystem ; River bed ; Spatial variation ; Stream ; Stream flow
A theoretical model of river channel changes is presented, which shows some nonequilibrium thermodynamic criteria of a river channel to bedding and equilibrium.

Sedimentological study of Gomti river sediments, Uttar Pradesh, India. Example of a river in alluvial plain

Sedimentological study of Gomti river sediments, Uttar Pradesh, India. Example of a river in alluvial plain
Fluviatile ; Gomti, riv. ; Géographie de l'Asie ; Inde ; Sédimentologie ; Uttar Pradesh

Geometric properties of river cross sections and associated hydrodynamic implications in Wuhan-Jiujiang river reach, the Yangtze River

Geometric properties of river cross sections and associated hydrodynamic implications in Wuhan-Jiujiang river reach, the Yangtze River
Based on measured hydrological data by using ship-mounted Acoustic Doppler Current Profiler (ADCP) instrument, the AA. analyzed shapes of river cross sections of the middle Yangtze River basin (mainly focusing on Makou and Tianjiazhen river reach
). The hydrologic data of 36 river cross sections have been successfully obtained. In this paper, the AA. try to characterize the hydrodynamic properties of river knots, associated backwater effects and their implications for flood mitigation in the middle and lower
Yangtze River basin are also discussed.

Dynamics and morphology of the North Branch Ashburton River.

Dynamics and morphology of the North Branch Ashburton River.
Ashburton River ; Fluviatile ; Géographie physique ; Géomorphodynamique ; Nouvelle-Zélande

The evolution pattern on the Yellow River delta system

The evolution pattern on the Yellow River delta system
The Yellow River delta is a fluvial action dominating, highly constructive sedimentary system. The evolution pattern of the delta is closely related to the hydrologic features and the suspended sediment load of the Yellow River as well as the river
mouth depositional forms and the diversion mode of the river's lower courses.

Channel avulsion and river metamorphosis : the case of the Thomson River, Victoria, Australia

Channel avulsion and river metamorphosis : the case of the Thomson River, Victoria, Australia
Australie ; Crue ; Fluviatile ; Géographie physique ; Géométrie hydraulique ; Hydrodynamique ; Lit fluvial ; Méandre ; Paléohydrologie ; Plaine d'inondation ; Thomson River ; Victoria
of the Thomson River, the reliability of palaeochannel characteristics as indicators of environmental conditions is discussed.

River classification for management: the geomorphology of the Sabie River in the Eastern Transvaal

River classification for management: the geomorphology of the Sabie River in the Eastern Transvaal
Channel geometry ; Classification ; Fluvial processes ; Methodology ; River management ; South Africa ; Stream ; Transvaal
Analysis of the Sabie River has facilitated the development of a hierarchical classification suitable as a framework for fluvial research in variety of disciplines and at a veriety of scales. - (AJC)

European rivers: first results

European rivers: first results
Several Central and West-European rivers were investigated within the framework of the SCOPE/UNEP study on Carbon transport in Major World Rivers. The rivers are sampled twice a year, i.e. in August/September at low discharge and in February/March
at high discharge. Preliminary results are presented here. The rivers Meuse and Scheldt have been sampled respectively at Heusden and Temse. (LW).

Container river services and gateway ports : similarities between the Yangtza River abd the Rhine River

Container river services and gateway ports : similarities between the Yangtza River abd the Rhine River
Ports d'accès sur le Yangtze River Delta et le Rhine-Scheldt Delta. Volumes des conteneurs de cours d'eau sur le Yangtze River et sur le Rhin. Développement du terminal intérieur. Configuration des services des cours d'eau. Acteurs de marché

Persistent and ancient rivers. Some australian examples

Persistent and ancient rivers. Some australian examples
Australia ; Cenozoic ; Drainage network ; Geochronology ; Palaeogeography ; Palaeohydrology ; Palaeosurface ; River bed ; Stream
Rivers are positive feedback systems and, once established and dominant, tend to maintain and enhance that dominance. Thus, major rivers ought to persist. Rivers, some 60 m.y. old (Eocene), that are extant and have been continuously active since
initiation have been identified in Australia. Other rivers of equal or even greater antiquity, but with slightly chekered chronologies, also persist in the landscape, as do the ghosts of others. River of similar antiquity occur in other Gondwana landscapes.

A magyar folyohalozat szakaszjelleg-tipusai. (Types of river reaches in the Hungarian river network)

A magyar folyohalozat szakaszjelleg-tipusai. (Types of river reaches in the Hungarian river network)
The types of river reaches for the major Hungarian rivers/lower reaches: alluvial fan accumulation| meandering and downcutting| meandering and infilling| equilibrium or final state| upper reaches: downcutting/ are demonstrated on map. Grain size
distribution of channel fill and load are studied. Most of the rivers belong to the downcutting type which is promoted by river regulations increasing slope. (DLO).

Complex behaviour of natural sediment-carrying streamflows and the geomorphological implications

Nearly 90 alluvial rivers are involved in this study, located in different natural zones in China, and include the Yellow River, Yangtze River, Haihe River, Huaihe River, Liaohe River, Songhuajiang River and Pearl River and their tributaries. When

River of dreams : on the gulf between theoretical and practical aspects of an upland river restoration

River of dreams : on the gulf between theoretical and practical aspects of an upland river restoration
Conceptual model ; Decision making process ; Ecology ; England and Wales ; Environmental management ; Gravel ; Model ; Rehabilitation ; River bed ; Stream ; United Kingdom ; Watershed
This paper is concerned with development and application of a conceptual model of the river restoration process and, through a specific case study, a demonstration of the challenges that arise when combining ecological and geomorphological
principles with social and economic issues. This, it demonstrates the difference between the ideal goals of river restoration and the practical determinants of the nature of a river restoration that derive from individual and community goals.

River channel changes.

River channel changes.

Unimpaired and regulated discharge in the Sacramento River Basin, California

Unimpaired and regulated discharge in the Sacramento River Basin, California
Reservoirs alter monthly and annual discharge quantities in the Sacramento River Basin of northern California and this practice obscures the natural variability of river discharge. - (DWG)

Linear dunes near the Orange River : origin, mineralogy and climate

Linear dunes near the Orange River : origin, mineralogy and climate
An examination of the linear sand dunes on either side of the lower Orange River suggests they are of arid Quaternary origin and unrelated to river activity. - (AJC)

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