Natural Channel Process of the Cheremosh River near the village of Roztoky
DOI:
https://doi.org/10.31861/Keywords:
Cheremosh River,, channel processes,, homogeneous channel and floodplain sections,, young river landscape,, anthropogenic impact,, patterns of society-nature interaction,, spatial planning,, geoecology.Abstract
Abstract: The aim of the study was to identify and describe the main regularities of the natural channel process of the Cheremosh River along the river reach near the village of Roztoky. The objectives of the study were to conduct a hydromorphological analysis of the structure and functioning of the flow–channel–floodplain system of the Cheremosh River near Roztoky using a complex of data from field (expedition) studies, maps, Earth remote sensing (ERS) data, and other sources, as well as to describe the characteristic features of the channel process and their evolution along the studied river reach.
The object of the research is the flow–channel–floodplain system (the hydromorphological basis of a young landscape) of the Cheremosh River in the area of the village of Roztoky. The hydromorphological analysis was carried out using data from expeditionary field studies conducted in 2012 and 2025, cartographic materials covering the period from 1775 to the beginning of the twenty-first century, ERS data, and previously published information.
The main parameters of the flow–channel–floodplain system were identified for low-water conditions as well as for the conditions of passage of a historical flood channel-forming flow, during which flow velocities reached 5–7 m/s. Froude numbers were close to 1 or exceeded it. The flow was generally concentrated. Glushkov numbers did not exceed 2.5–3.0, while higher concentration was observed in forced bends (about 1.75). The intensity of the channel process is also indicated by the presence of significant masses of boulder-sized channel-forming sediments.
The character of the channel process and its changes along the studied river reach are significantly influenced by local constraining factors, including bedrock banks, massifs of above-floodplain terraces, and rock outcrops within the channel. These factors are associated with the tectonic features of the area. Thus, the channel process combines features of self-formed and forced channel forms. The latter include forced bends and large bifurcations (in particular, around a bedrock island). The intrinsic forms of the flow–channel system are represented by elongated bars, detached lateral beaches, and bottom riffles
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