%0 Dataset
%T Soviet river sediment
%J Arid Land Ecology and Resources Science Data Center
%I Arid Land Ecology and Resources Science Data Center(data.dcxjegi.cn)
%U https://data.dcxjegi.cn/portal/metadata/70258262-dfa9-4ea8-8488-a7d47728e632
%W NCDC
%R 10.12389/ariddc.02303
%A Documentation Information Center
%K Erosion process;Fluvial sedimentation
%X Atmospheric precipitation falling upon the land surface is partly evaporated, partly retained within the soil, and partly flows toward lower areas of the land, forming both surface runoff and groundwater runoff.As water moves across the surface, it expends considerable amounts of energy in overcoming internal friction and external resistance to movement, the latter arising chiefly from the irregularities of channel and boundary surfaces. In the process, water performs enormous work by washing away and eroding rocks and soils, transporting various substances of mineral and organic origin, both as sediments and dissolved matter, to lower parts of the Earth's surface and, in part, carrying them into the oceans. The work performed by flowing water determines the intensity and character of water erosion, that is, the degree to which runoff acts upon the weathering mantle of the land surface.Three principal types of water-erosion processes must be distinguished¹:The washing away, erosion, and dissolution of soils and rocks, resulting in the formation of the primary material that becomes the source of solid runoff and chemically dissolved substances;The migration (transport) of erosion products by surface water and groundwater from their place of origin to lower parts of the land surface;The deposition (accumulation) of transported erosion products along the path of flow, wherever, for one reason or another, the carrying capacity of the runoff becomes insufficient to transport all of the eroded material in motion.It should be emphasized that these three types of water-erosion processes occur continuously and simultaneously throughout the entire course of surface and subsurface runoff, although with varying intensity.¹ In this work, water erosion is understood as the totality of all processes by which flowing water modifies the land surface, including both erosion and the deposition of eroded material.It is self-evident that washing and erosion are much more intense during