08. RESEARCH OF THE MORPHOLOGY OF RIVER DNIESTER USING REMOTE SENSING AND CARTOGRAPHIC DATA
The aim of the work is to research the method of studying horizontal displacements in the channel of the Dniester (the second largest river in Ukraine) from river source to canyon using data of different periods – topographic maps, space images and special maps. The main factors of displacements and meandering of the Dniester riverbed were considered. The boundaries of the Precarpathian bend and Volhynian-Podolian upland are shown as their structures influence the formation of the character of the Dniester riverbed. The monitoring was carried out on the site with a total length of about 400 km for over a 100-years period. Data for conducting research includes topographic maps (1890, 1928, 1986) and space images obtained from satellites Landsat 5 (1979), Landsat 7 (2000) and Sentinel (2017), as well as special ground maps and maps of Quaternary deposits. The general workflow of data processing is presented. Depending on the type and the displacement of the riverbed, the research site is divided into 5 sections. Visualization and studies of changes in the Dniester riverbed were carried out with ArcGIS 10.1 software. The sinuosity coefficients of the Dniester river channel were determined, and measurements of the maximum displacements of the river on its five selected fragments of the channel were performed. The maximum displacement during the 100-year period is 950 meters. For the analysis of the influence of relief, the digitized river channel was imposed on DEM. It was established that the main effective method for forecasting channel changes is a hydrological and morphological analysis based on different topographical data, and information obtained on the basis of remote sensing data, which involves the combination and analysis of modern and past configurations of the riverbed.
Listing Details
- AuthorKhrystyna Burshtynska et al.
- AffiliationLviv National Polytechnic University
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