Influence of natural and anthropogenic factors on the formation of dangerous situations landslides, floods (on the example of the upper course of the Dniester river)

Lyalko, V.І.; Аpostolov, Aleksandr; Yelistratova, Lesia

doi:10.36023/ujrs.2017.15.112

Cited by 2 publications

(1 citation statement)

References 1 publication

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“…At the hydrological gauge of the Stryi River -Verkhne Synovydne village the maximum discharge consisted of 932 m 3 s -1 and was recorded on July 8. (Adamenko, 2014;Lyalko et al, 2017). So, the rain flood of 2010 was chosen to verify the automated system of short-term flood forecasting on the Stryi River (FFS Stryi).…”

Section: Methodsmentioning

confidence: 99%

Verification of the automated flood forecasting system on the Stryi River

Khrystiuk¹,

Gorbachova²,

Shpyg³

2022

ahs

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The physical and geographical location of the Stryi River Basin causes the formation of catastrophic floods, which are regularly forming in this region and cause significant material damage and, sometimes, the death of people. The last catastrophic flood took place on the Stryi River in June 2020. Thus, the creation of a modern system for forecasting the streamflow of the Stryi River is a very important task. This paper describes such an automated flood forecasting system (FFS Stryi) that is developed at the Ukrainian Hydrometeorological Institute of the State Emergency Service of Ukraine and the National Academy of Sciences of Ukraine. The basis of the system is the hydrological module NAM of the Rainfall-Runoff software complex MIKE 11 (Denmark), which uses the forecasted weather parameters from the numerical mesoscale atmospheric model WRF ARW v. 3.6.1 (USA). The objective of this study is to verify this system and identify the factors that affect the accuracy of flood forecasting of the Stryi River. The system of streamflow forecasting of the Stryi River uses the continuous series of calculated (historical) levels and discharges, air temperature, precipitation, evaporation, as well as the forecast of meteorological indicators for 5 days. The system is set to work with a three-hour time step in the automatic regime. Verification of FFS Stryi according to the historical meteorological data showed that the system reproduces the streamflow of the Stryi River with satisfactory quality. The accuracy of discharge forecasting depends on the accuracy of weather parameters forecasting and, above all, the quantity of precipitation and the time of their falling out. Errors of hydrological forecasting are caused by an imperfect hydrometeorological network of observations (number of points and frequency of measurement), a digital model of the relief of the Stryi River basin and errors of weather parameters forecasts.

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Section: Methodsmentioning

confidence: 99%

Verification of the automated flood forecasting system on the Stryi River

Khrystiuk¹,

Gorbachova²,

Shpyg³

2022

ahs

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Climate as a factor in the modern relief formation of the northeastern macroslope of Chornohora

Kostiv,

Shuber,

Burianyk

et al. 2023

Man and Environment. Issues of Neoecology

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Purpose. To analyze climatic indicators that cause the formation and development of a wide range of geomorphological processes, including dangerous or catastrophic ones. Methods. Statistical, system analysis. Results. The research was based on the analysis of a number of climatic indicators (amount and intensity of precipitation, air and soil temperature, thickness of snow cover and water reserves in it) of the Pozhyzhevska snow avalanche station and the Laboratory of Landscape Monitoring of the Chornohora Geographical Station of the Ivan Franko National University of Lviv, which represent different oroclimatic zones.As a result of the study, the climatic indicators influencing the formation of modern relief processes of the northeastern slope of Chornohora were mainly established, and their heterogeneity in the different natural territorial complexes was characterized. Particular attention is paid to the processes of physical weathering, which are quite widespread and form the material for the further development of erosion and gravity processes. Their development is determined by significant temperature amplitudes and temperature transitions through 0°C. It has been established that an the Chornohora Geographical Station, daily air temperature amplitudes above 10°C are characteristic of 2/3 of the days of the warm period, above 15°C - on a third of the days, above 20°C in some cases, with a maximum value of 25.2°C. The daily amplitudes of temperature on the open soil surface above 20°C were recorded on half of the days of the warm period with repeated exceeding of 30°C. With depth, these indicators in the soil are smoothed out, but are still noticeable at a depth of 20 cm. The transition of the air temperature through 0°C (also one of the factors of defluxation) to the Chornohora Geographical Station was recorded on average on 98 days per year (including 38 in the snowless period). The amount and intensity of precipitation affecting the development of erosion processes, the formation of floods, mudflows, avalanches, and indirectly landslides and landslides. Conclusions. It has been found that the main climatic indicators that cause the formation and development of various geomorphological processes are precipitation, temperature, and snow cover thickness.

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Influence of natural and anthropogenic factors on the formation of dangerous situations landslides, floods (on the example of the upper course of the Dniester river)

Cited by 2 publications

References 1 publication

Verification of the automated flood forecasting system on the Stryi River

Verification of the automated flood forecasting system on the Stryi River

Climate as a factor in the modern relief formation of the northeastern macroslope of Chornohora

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