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Résultats de la recherche (180 résultats)

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  • 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
  • 2007
  • Channel adjustments, bedload transport and sediment sources in a gravel-bed river, Brenta River, Italy
  • Multi-scale characterization and evolution of channel forms in gravel-bed rivers
  • This paper deals with the Brenta River, a gravel-bed river strongly affected by human impact. The aims of this work are 1) to reconstruct the channel adjustments that have occurred during the last decades and 2) to analyse the present condition
  • of the river in terms of bedload transport and sediment sources. The study reach was investigated using historical maps, aerial photographs, monumented cross-sections, laser altimetry data and field survey. Bedload transport rates were estimated
  • by a morphological approach, which allows the construction of a sediment budget. The results should be taken into account in addressing sediment management and restoration along a dynamic and unstable river such as the Brenta.
  • 2007
  • Channel changes of the Makou-Tianjiazhen reach in the middle Yangtze River during the past 40 years
  • Quantitative analysis was performed on the filling-scouring process for the river reach within Makou and Tianjiazhen, the middle Yangtze River with the help of GIS and DEM techniques. Research results indicate no changes in the boundary of the river
  • but the scouring and the filling magnitude in specific river channel is strong. The filling and the scouring process of the study river reach is greatly impacted by the sediments and water from the upstream of the study river reach. The construction of the Three
  • 2007
  • Hydrologic control of waveforms on small meandering rivers
  • Small river channels within the Humber Basin of Southern Ontario exhibit irregular meandering patterns. Recent changes in river planform are assessed through a bi-temporal comparison of channel planform using orthorectified aerial photography
  • and statistical analysis of curvature series based on autocorrelation and spectral analysis. This paper argues that the scaling of wavelengths with discharge can be considered a strong factor controlling planform evolution on some small meandering river systems
  • 2007
  • We used the integred model of geographical study of the environment and its components as a basis of our river basin study, with the purpose of informing the public and environment decision makers about the importance of preserving good condition
  • of water resources. The methodology, which is based on the study of mutual correlation between natural characteristics of the river basin, the activities in the river basin and the quality of water, includes the hydrogeographical study of the river basin
  • , the establisment of environmental indicators for the protection of the river basin, and the foundation of ten research points fo monitoring the condition of water resources. We chose the Sotla's river basin for our study, but the model can also be transferred
  • to other river basins. - (IKR)
  • 2007
  • The river-bed : a dynamic store for plant propagules ?
  • Wood in world rivers. Special issue
  • This paper investigates temporal variations in the abundance, species composition and richness, and spatial distribution of plant propagules stored on river-beds. Samples of the surface layers of river-bed sediments were obtained from 2 reaches
  • of the River Frome, Dorset, and one reach of the River Tern, Shropshire. Propagules were preferentially stored within particular bed habitats. The preferential accumulation of sediment and species-rich propagules around stands of marginal emergent vegetation
  • 2007
  • Port competition in the Yangtze River Delta
  • Commerce des conteneurs dans le Yangtze River Delta. Distribution des conteneurs dans la province du Zhejiang. Réformes des ports et startégies des entreprises internationales. La gouvernance des ports revisitée.
  • 2007
  • Sedimentary facies of borehole cores from the Mekong River floodplain in Cambodia
  • This study analyzes 3 borehole cores to examine the sedimentary facies of the extensive floodplain of the Mekong River in Cambodia and discusses the relationship between sedimentary facies and surface topography.
  • 2007
  • Wetlands as flood control : the case of the La Crosse River Marsh
  • Cours d'eau ; Crue ; Ecologie ; Etats-Unis ; Marécage ; Milieu humide ; Mississippi River ; Paysage ; Photographie aérienne ; Wisconsin
  • 2007
  • A mid-late Holocene flood record from the alluvial reach of the Mahi River, Western India
  • Flooding of rivers in India is linked with the peak monsoons. In this study, the slackwater deposits in the alluvial reaches of the Mahi river basin have been documented. These occur in the ravines incised during the early Holocene on an alluvial
  • 2007
  • Simulating meander evolution of the Geul River (the Netherlands) using a topographic steering model
  • The AA. examine the meandering character of the Geul River using a numerical river meandering model. The main aim is to test and calibrate a topographic steering meander model. In this case study, special attention is paid to the incorporation
  • 2007
  • Nonlinear determinism in river flow : prediction as a possible indicator
  • This study addresses the issue of nonlinear determinism in river flow series using prediction as a possible indicator. First, a brief account of the nonlinear local approximation method and the inverse approach to identify nonlinear determinism
  • is presented. Next, a review of the studies that have attempted river flow predictions using the nonlinear deterministic method is provided, followed by a discussion on the presence of nonlinear determinism through the inverse approach. Conclusions and scope
  • 2007
  • Scales and power in river basin management : the Chao Phraya River in Thailand
  • Allocation ; Discourse ; Ecology ; Management ; Policy ; River basin ; Thailand ; Water resources
  • 2007
  • Changing features of extreme precipitation in the Yangtze River basin during 1961-2002
  • The total precipitation of the highest 1 day, 3 day, 5 day, 7 day precipitation amount in the Yangtze River basin was analyzed with the help of linear trend analysis and continuous wavelet transform method. The aims of this paper are to demonstrate
  • the changes of the extreme precipitation in different parts of the Yangtze River basin, showing the possible regional responses to global climatic changes; and to detect the periods of extreme precipitation series in the upper, middle and lower Yangtze River
  • 2007
  • Monsoon rivers of Asia. Special issue
  • of floods by large lakes in the middle valley, and the passage of large floods) still continue to have research interest for fluvial geomorphologists. Lastly, there are studies on very large river basins covering extensive parts of the Asian continent
  • , with an extreme high range of elevation. Finally, it is necessary to adjust ones perception of scale to that of very large rivers, in the contexts of river discharge, sediment flux, and channel size. This volume raises also the question of flood hazard mitigation
  • 2007
  • Late Quaternary river drainage and fish evolution, Southland, New Zealand
  • Regionally extensive interlinking of principal rivers (Mataura, Oreti, Aparima) via coalescence of alluvial plains onshore, and offshore at sea level lowstands, has resulted in a widespread genetic homogenisation of fish populations. Geological
  • and genetic data in combination provide powerful tools for the elucidation of local and regional geomorphic evolution where river capture is an important process. The AA. focus here on drainage connections that permit gene flow through river systems
  • 2007
  • Sedimentary links and the spatial organization of Atlantic salmon (Salmo salar) spawning habitat in a Canadian Shield river
  • Canada ; Channel geometry ; Conceptual model ; Ecosystem ; Fish ; Grain size distribution ; Habitat ; Meander ; Quebec ; River bed ; Stream
  • First, the AA. propose an extension of the sedimentary link concept for lower relief, old mountain landscapes and test its utility along the Ste Marguerite River (SMR), a salmon river draining the Canadian Shield in the Saguenay region of Québec
  • 2007
  • Quantitative morphodynamic typology of rivers : a methodological study based on the French Upper Rhine basin
  • Multi-scale characterization and evolution of channel forms in gravel-bed rivers
  • The AA. establish a quantitative functional hydrogeomorphological typology of river reference types in the French Upper Rhine basin with the requirements of the European Water Framework Directive, defined in terms of hydromorphological quality
  • and prospects for river restoration. Four ecoregions (i.e. hydrogeomorphic units) based on climate, relief, geology and landscape history, were delineated by expert opinion and validated by independent variables. Results for 2 ecoregions, marly calcareous loess
  • 2007
  • Ecosystem expansion and contraction dynamics along a large Alpine alluvial corridor (Tagliamento River, Northeast Italy)
  • Multi-scale characterization and evolution of channel forms in gravel-bed rivers
  • The AA. quantify large-scale expansion and contraction dynamics of surface waters along a braided section of the last remaining semi-natural large Alpine gravel-bed river (Tagliamento River). To assess surface-subsurface exchange patterns
  • 2007
  • Environmental change and cultural response around 4200 cal. yr BP in the Yishu River Basin, Shandong
  • China ; Climate reconstruction ; Cultural studies ; Neolithic ; Palaeo-environment ; Palaeogeography ; River basin ; Shandong
  • 2007