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SEDIMENT LOAD AND ITS INFLUENCE ON channel processes OF SOME LARGE RIVERS IN RUSSIA AND CHINA

International Journal of Sediment Research 2000年第3期 307-320页

作者： LIU Shuguang,CHALOV R.S, WU Dandan, LI Congxian Postdoctor, Research Fellow, Key Laboratory of Marine Geology, Tongji University, Shanghai 200092, China & Researcher, State Key Laboratory of Estuarine and Coastal Research, Shanghai 200062,China Professo

The sediment load, particle size distribution, and ratio between suspended and bed load components. are analyzed for some large rivers in Russia and China. The relationship is shown between the longitudinal changes in sediment load and the directions of vertical river channel deformation, i.e. river incision or sedimentation, which in turn are supported by results of analysis of long-term stage discharge curves. It seems that branching channels are common for the rivers, except where the sediment load is great (such as in the Yellow River). Conditions for forming different types of river channels are defined with the help of diagrams showing the water discharge-slope and slopesediment concentration relationships.

关键词： Sediment load channel processes River pattern Russia river

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Erosion,sediment transportation and accumulation in rivers

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International Journal of Sediment Research 2008年第2期23卷 93-105页

作者： N.I.ALEKSEEVSKIY K.M.BERKOVICH R.S.CHALOV Head of the Hydrology Department Faculty of GeographyMoscow State UniversityMoscowRussiaProf Leading researcher Lab.of Soil Erosion and Fluvial ProcessesFaculty of GeographyMoscow State UniversityMoscowRussiaProf Head of the Lab.of Soil Erosion and Fluvial processes Faculty of GeographyMoscow State UniversityMoscowRussiaProf

The present paper analyses the interrelation between erosion,sediment transportation and accumulation proposed by *** (1908-1983) and its further development in modern studies of river channel processes in ***-temporal linkages between erosion and accumulation are defined considering channel processes at different scales - river longitudinal profile,channel morphological patterns,alluvial bedforms (bars,dunes) and individual sediment *** between river geomorphic activity,flow transportation capacity and sediment budgets are established (sediment input and output; channel bed erosion and sediment entrainment into flow - termination of sediment transport and its deposition).channel planforms,floodplain segments separated by the latter and alluvial channel bedforms are shown to be geomorphic expressions of sediment transport process at different spatial and temporal *** paper is dedicated to the 100th anniversary of ***,Professor of the Moscow State University,author of the book "River channel and erosion in its basin" (1955).That book is regarded in Russia as the pioneering work which initiated the complex hydrological and geographical studies of channel processes and laid a basis for the theory of unified fluvial erosion-accumulation process.

关键词： channel processes Sediment Erosion and accumulation Longitudinal profile River channel patterns channel bed morphology

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