scholarly journals Management of the River Vedi Annual Runoff

2019 ◽  
Vol 75 ◽  
pp. 02003
Author(s):  
Varduhi Margaryan ◽  
Ksenia Raevich
Keyword(s):  
Spatial Distribution ◽  
River Runoff ◽  
Mathematical Statistic ◽  
Annual Runoff ◽  
Collect Work ◽  
Dynamic Changes ◽  
Geographic Mapping ◽  
Meteorological Observations ◽  
Long Term Forecasting

The article presents the following tasks for the Vedi river: to study and analyze the main physical and geographical factors determining the runoff; to collect, work out, analyze and estimate the results of factual hydro-meteorological observations of the river basin; to discover and analyze the features of intra-year distribution of the river runoff basin; to study dynamic changes of the river runoff; to create the methods of long-term forecasting of monthly and annual runoff; to create a map of spatial distribution of the river runoff. For these purposes were used the data of hydrological and meteorological stations, points of basin observations and mathematical-statistic, geographic, mapping, analytical and correlation methods.

The «rainfall-runoff» system and its long-term fluctuations in the Siverskyi Donets River Basin (Ukraine)

2021 ◽  
Author(s):  
Hanna Bolbot ◽  
Vasyl Grebin
Keyword(s):  
Climate Change ◽  
Water Resources ◽  
River Basin ◽  
Air Temperature ◽  
River Runoff ◽  
Annual Runoff ◽  
Annual Precipitation ◽  
Spring Flood ◽  
Current Period

<p>The current patterns estimation of the water regime under climate change is one of the most urgent tasks in Ukraine and the world. Such changes are determined by fluctuations in the main climatic characteristics - precipitation and air temperature, which are defined the value of evaporation. These parameters influence on the annual runoff distribution and long-term runoff fluctuations. In particular, the annual precipitation redistribution is reflected in the corresponding changes in the river runoff.<br>The assessment of the current state and nature of changes in precipitation and river runoff of the Siverskyi Donets River Basin was made by comparing the current period (1991-2018) with the period of the climatological normal (1961-1990).<br>In general, for this area, it was defined the close relationship between the amount of precipitation and the annual runoff. Against the background of insignificant (about 1%) increase of annual precipitation in recent decades, it was revealed their redistribution by seasons and separate months. There is a decrease in precipitation in the cold period (November-February). This causes (along with other factors) a decrease in the amount of snow and, accordingly, the spring flood runoff. There are frequent cases of unexpressed spring floods of the Siverskyi Donets River Basin. The runoff during March-April (the period of spring flood within the Ukrainian part of the basin) decreased by almost a third.<br>The increase of precipitation during May-June causes a corresponding (insignificant) increase in runoff in these months. The shift of the maximum monthly amount of precipitation from May (for the period 1961-1990) to June (in the current period) is observed.<br>There is a certain threat to water supply in the region due to the shift in the minimum monthly amount of precipitation in the warm period from October to August. Compared with October, there is a higher air temperature and, accordingly, higher evaporation in August, which reduces the runoff. Such a situation is solved by rational water resources management of the basin. The possibility of replenishing water resources in the basin through the transfer runoff from the Dnieper (Dnieper-Siverskyi Donets channel) and the annual runoff redistribution in the reservoir system causes some increase in the river runoff of summer months in recent decades. This is also contributed by the activities of the river basin management structures, which control the maintenance water users' of minimum ecological flow downstream the water intakes and hydraulic structures in the rivers of the basin.<br>Therefore, in the period of current climate change, the annual runoff distribution of the Siverskyi Donets River Basin has undergone significant changes, which is related to the annual precipitation redistribution and anthropogenic load on the basin.</p>

scholarly journals MAIN CHARACTERISTICS OF CHANGES IN RIVER RUNOFF IN A LONG-TERM SECTION ACROSS THE TERRITORY OF THE REPUBLIC OF BASHKORTOSTAN

2021 ◽  
Vol 31 (2) ◽  
pp. 159-165
Author(s):  
A.M. Gareev ◽  
E.M. Galeeva ◽  
V.V. Barinov
Keyword(s):  
River Runoff ◽  
Global Climate ◽  
Southern Urals ◽  
Annual Runoff ◽  
The Southern Urals ◽  
Statistical Parameters ◽  
Republic Of Bashkortostan ◽  
Observation Series ◽  
The Republic

The article reveals the main characteristics of the change in the values of the river runoff layer indicator in the long-term section across the territory of the Republic of Bashkortostan. In previously published works related to 1990-2000, the statistical parameters of river runoff are considered without taking into account the changes that have occurred in the general population of the initial information. It is noted in the article that the calculations and estimates for the study of the peculiarities of changes in hydrometeorological conditions, carried out by us in recent years, indicate a violation of the homogeneity of the observation series. At the same time, attention is drawn to the fact that this trend is dependent on the influence of factors associated with global climate change. The article indicates that ignoring the facts reflecting the ongoing changes can affect not only the accuracy of the calculations, but also lead to the adoption of incorrect and unjustified decisions in the water sector and the assessment of environmental conditions in watercourses. The analysis was carried out according to the values of the annual runoff layer, the change in the indicators of the annual runoff of the rivers of the republic was calculated for two time intervals. As the boundary conditions between them, the year was taken, from which a rather clear tendency of the trend change in terms of the annual runoff values is revealed. Cartographic analysis of the information obtained was carried out using the ArcGIS software package. It has been established that during the period of noticeable climatic changes in most of the territory of the republic, there is a tendency to an increase in the values of the annual runoff layer. At the same time, the greatest indicators of change occur on the western slopes of the Southern Urals and the Ufa plateau within the republic. It was found that a noticeable decrease in the values of the annual runoff layer is observed over the territory of the Bashkir Trans-Urals.

scholarly journals INFLUENCE OF ATMOSPHERIC PRECIPITATIONS ON THE RUN OF THE PUTIL RIVER

2021 ◽  
Vol 51 (2) ◽  
pp. 24-29
Author(s):  
Yuriy Yushchenko ◽  
Olha Palanychko ◽  
Mykola Pasichnyk ◽  
Oleksandr Zakrevskyi
Keyword(s):  
Climate Change ◽  
Water Balance ◽  
River Runoff ◽  
Annual Runoff ◽  
Water Runoff ◽  
Long Term Changes ◽  
Annual Distribution ◽  
The Village ◽  
Average Annual Precipitation

Research of precipitation, water balance of river basins, and the impact of precipitation on river runoff remain relevant in the context of global and regional climate change. Nowadays, many scientific research all over the world are devoted to the research of the problem of river runoff change under the influence of climatic factors. This kind of research has been developing strongly in Ukraine in recent decades. In particular, they concern the rivers of the Ukrainian Carpathians. The basin of the river Putyla to the line of the village of Putyla has an area of 181 km2. It is located in the south-eastern part of the Carpathian and characterized by a significant influence of warm rains on the formation of water runoff. The average annual runoff is characterized by rather complex patterns of change both in time and space. There are periodic, cyclical and unidirectional changes that occur under the influence of a complex system of factors. Climate is a major factor of the water change. Thus, the research of the average runoff of the Putila River has different aspects.To determine the effect of precipitation on river runoff, the method of comparing difference-integral curves of annual runoff and precipitation, as well as water-balance methods are used. Long-term changes and intra-annual distribution of precipitation, in particular rainfall, according to the observations of the meteorological station Selyatyn were analyzed. We constructed a differential integrated curve of modular coefficients of the average annual precipitation in the Putil district. It clearly reflects the cyclical changes in precipitation. Long-term changes and intra-annual distribution of water runoff in the Putyla River also were analyzed. During the observation period, periods of long-term fluctuations of the average annual precipitation were revealed. The average annual rainfall is 842.9 mm. The annual course is stable, ie the greatest amount of precipitation falls in the summer, when there are intense thunderstorms and showers, the least – in winter. Based on the data of hydrological observations, the average long-term value of water consumption according to GP Putila is 2.47 m3/s. We calculated the coefficient of variability (variation). The coefficient of variation for average costs is 0.21 (21%), and for precipitation – 0.7 (7%). The connection between precipitation and runoff was established. We have built a comprehensive schedule of annual distribution of precipitation and costs of the Putyla River for 2010. You can see that in the spring due to snowmelt there is an influx of water and there is a spring flood. It is known that 2010 in Putilsky district was full of water. The reduction of water consumption in the Putyla River in the cold period of the year with a decrease in precipitation is also observed. Graph of the dependence of the runoff of the Putyla River on precipitation in the village of Selyatyn showed a fairly clear relationship between the variable values of runoff and precipitation (the coefficient of variation is 0,66). The feeding structure of the Putyla River is mixed. The main share is occupied by rain, less - snow and groundwater. Key words: climate change, precipitation, runoff, rivers, long-term changes in runoff, intra-annual distribution of precipitation and runoff, Putyla river.

scholarly journals River runoff variability at watercourses of the Ural river basin

2020 ◽  
Vol 163 ◽  
pp. 05002
Author(s):  
Regina Fatkhutdinova ◽  
Diana Gareeva
Keyword(s):  
Water Management ◽  
Russian Federation ◽  
River Runoff ◽  
Annual Runoff ◽  
Management Planning ◽  
Transboundary River ◽  
Runoff Variability ◽  
The Russian Federation ◽  
Water Management Planning

The article is devoted to spatial and temporal variabilities of the river runoff on the example of the river Ural within the territory of the Russian Federation. The author points out the necessity of investigating fluctuations in the water resources of a transboundary river for the purposes of long-term water management planning. Using the coefficient of variation and asymmetry, the annual runoff variability is analyzed.

scholarly journals GEOLOGICAL AND HYDROGEOLOGICAL STRUCTURE OF RIVER BASINS AND SOIL COMPOSITION AS AN IMPORTANT FACTOR IN THE FORMATION OF THE STREAMFLOW OF THE TERRITORY (ON THE EXAMPLE OF THE DEBED RIVER BASIN)

2018 ◽  
pp. 3-9
Author(s):  
V. G. Margaryan
Keyword(s):  
Spatial Distribution ◽  
River Basin ◽  
River Runoff ◽  
Water Regime ◽  
River Basins ◽  
Annual Runoff ◽  
Soil Composition ◽  
Annual Runoff Distribution ◽  
Hydrogeological Structure

The regularities of the spatial distribution of the river runoff of the Debed basin, the features of the water regime and the intra-annual runoff distribution caused by the geological and hydrogeological structure of the region and composition of soil were discussed and analyzed. Discussed some issues of regulation and management of river runoff associated with the feature of the geological and hydrogeological structure of the river basin and the composition of soil.

scholarly journals Methods for long-term forecasting of water availability in spring floods (r. Arpa – p. Jermuk)

2021 ◽  
Vol 333 ◽  
pp. 02007
Author(s):  
Varduhi Margaryan ◽  
Ekaterina Gaidukova ◽  
Gennady Tsibulskii
Keyword(s):  
Statistical Significance ◽  
Annual Runoff ◽  
Regression Method ◽  
Spring Flood ◽  
Factors Affecting ◽  
River Catchment ◽  
Multivariate Correlation ◽  
Long Term Forecasting ◽  
Satisfactory Quality

The article discusses the main physical and geographical factors, affecting the runoff of spring floods in the Arpa rivers catchment in the station Jermuk. Also the article discusses the development of a methodology for long-term forecasting of runoff volume of spring flood (WIV–VI) of river Arpa, station Jermuk. The study used data of water discharges of Arpa river catchment (station Jermuk), air temperature, precipitation, reserve water in snow at meteostation Jermuk. A linear correlation was also revealed between the values of the annual runoff and runoff of spring floods in Arpa river catchment, which can be used to predict the annual runoff. To predict the volume of spring flood runoff, regression method and obtained multivariate correlation dependencies. Assessment of statistical significance and stability the proposed models showed their «satisfactory» quality and the possibility of using in the practice of engineering and hydrological forecasts.

scholarly journals Climatic and Anthropogenic Factors in Long-term Alterations of the Volga River Runoff

2013 ◽  
pp. 4-19
Author(s):  
Keyword(s):  
River Runoff ◽  
Statistical Data ◽  
Annual Runoff ◽  
Anthropogenic Factors ◽  
Volga River ◽  
Instrumental Observations ◽  
Runoff Changes ◽  
Seasonal Runoff ◽  
Natural Climate

The contribution of natural climate and anthropogenic factors in the Volga river runoff changes at Volgograd during the period of instrumental observations (1882–2007). has been revealed. The estimates are based on two independent approaches. One of them is based on the restoration of the annual and seasonal runoff against the riversindicators’ regression dependencies, and the other one is based on the water use statistical data and methods of water balance. The calculations give the total Volga river annual runoff anthropogenic decrease values that are fairly close to each other.

Development of Social and Economic Forecasting and Ideas of A. Anchishkin

2013 ◽  
pp. 143-155
Author(s):  
A. Klepach ◽  
G. Kuranov
Keyword(s):  
Economic Planning ◽  
Special Role ◽  
Economic Management ◽  
Economic Forecasting ◽  
Russian Economy ◽  
World Economic ◽  
Long Term Forecasting ◽  
Working Out

The role of the prominent Soviet economist, academician A. Anchishkin (1933—1987), whose 80th birth anniversary we celebrate this year, in the development of ideas and formation of economic forecasting in the country at the time when the directive planning acted as a leading tool of economic management is explored in the article. Besides, Anchishkin’s special role is noted in developing a comprehensive program of scientific and technical progress, an information basis for working out long-term forecasts of the country’s development, moreover, his contribution to the creation of long-term forecasting methodology and improvement of the statistical basis for economic analysis and economic planning. The authors show that social and economic forecasting in the period after 1991, which has undertaken a number of functions of economic planning, has largely relied on further development of Anchishkin’s ideas, at the same time responding to new challenges for the Russian economy development during its entry into the world economic system.

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