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oa Monitoring of Landslides and Erosion-Accumulation Processes in the Upper Reaches of the Prut River Basin (Ukrainian Carpathians)
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 5th EAGE Workshop on assessment of landslide hazards and impact on communities, Sep 2025, Volume 2025, p.1 - 5
Abstract
The upper Prut River basin in Chornogora (southeastern part of the Ukrainian Carpathians) serves as a key site for studying meteorological, geomorphological, hydrological, and landscape processes. Since 2001, geomorphological monitoring has focused on coastal and bottom erosion, erosion on tourist trails, and landslides, scree, and collapses. After the catastrophic flood of July 24–26, 2008, as a result of the reshaping and deepening of the Prut riverbed, landslide processes along the foot of the Ozirny ridge and the banks of the river valley intensified, to a lesser extent, landslides and erosion-accumulation processes intensified after the high flood in June 2020. The appearance, deepening, and expansion of cracks in the soil and vegetation cover, the retreat of the rear wall and the sliding of landslide bodies, and the intensification of scree and erosion processes were observed. Monitoring is carried out at three observation sites, the dimensions of the activated landslides are: upper part − 8.5–10.5 m, lower part − 16.6–43.7 m, length of landslides − 14–48 m, slope exposure - south-west and south-east. During September 2009 - September 2012, the width of cracks in root exposure increased by an average of 7 cm, and the average depth by 0.5 cm. Erosion and accumulation processes depend on the precipitation regime. During September 2011-September 2012, the micro-relief of observation site No. 3 changed the most - a scree slope on the left south-eastern bank of the Prut River, dominated by argillites with layers of siltstones and sandstones. The intensity of surface washout at observation site No. 3 was 8.64 cm/year, and the intensity of accumulation was 9.5 cm/year.
