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THE FORMING CONDITIONS OF ALLUVIAL river channel patterns

International Journal of Sediment Research 2002年第1期17卷 83-88页

作者： Pu QI1, Gouting LIANG2, Zangying SUN3 and Honghai QI4 1,2 Senior Engineer, Institute of Hydraulic Research, Yellow river Conservancy Commission, Zhengzhou 450003, P.R. China, 3 Engineer, Ins Senior Engineer Institute of Hydraulic Research Yellow River Conservancy CommissionZhengzhou 450003P.R. China Engineer Institute of the Same Above Postgraduate North China Institute of Water Conservancy and Hydroelectric Power

In normal fluvial processes the river channel is determined by river flows while the movement of river flows is contained by river channels. The relationship between the river morphology and its bend curvature shows that rivers with large bend curvatures always have narrow and deep channels and those with shallow and wide channels are always straight. The plan form of a river reaches is determined by the cross-sectional morphology. A meandering river reach may be developed under various water-sediment conditions as long as the narrow and deep channels are formed.

关键词： channel morphology Fluvial process Water-sediment conditions river channel patterns

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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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