Channel processes in the rivers of Asian Russia: geography and mapping
R.S. CHALOV, G.B. GOLUBCOV, A.A. KURAKOVA, D.I. SHKOLNYI, E.R. CHALOVA
Lomonosov Moscow State University, Moscow, Russia
Keywords: maps of channel processes, morphodynamics, conditions of channel formation, meandering, branching, mountain and plain rivers
Abstract
Rivers of Asian Russia are characterized by a great variety of channel formation conditions, sizes, water regime, geological and geomorphological structure of basins, runoff and sediment composition, morphodynamic types of channels. This determines complex geographical patterns of distribution of mountain, semi-mountain and plain rivers, incised and wide-floodplain, meandering, branched and relatively rectilinear channels, and each channel type with a different combination of natural factors and anthropogenic impacts on rivers differs in development features. General patterns, regional and local specifics of manifestations of channel processes are reflected on the channel processes map, which highlights areas of free or limited development of channel deformations, distribution of mountain and plain rivers, reflects morphodynamic types of channels, indicators of channel deformations and anthropogenic changes in river channels. For the main basins - the Ob, Yenisei, Lena and Amur - maps of channel processes have been compiled on a larger scale. The compilation of the maps is based on the methodology for mapping channel processes developed at Lomonosov Moscow State University in the 1980s and 1990s, refined and adjusted based on the latest research.
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