bluuebunny/crossref_metadata_2025_split huggingface dataset:
Assessment of Hadzhibeysky estuary and forecasting possible water level in it
Authors: Shakirzanova Zh.R. 
Published: November 2018

Introduction. Modern hydrology of the Hadzhibeysky estuary is due to natural and anthropogenic factors and characterized by their intense economic use. Since the beginning of the last century, there was an intense discharge of municipal waters from Odessa (biological treatment plant "North"). This led to a significant increase in the levels of water in the estuary, which threatened to destroy the dam that separates the estuary from the sea, with the possible flooding of residential areas and enterprises of the Peresip area, as well as the road, on the dam, especially in disastrously high water years. Purpose. The purpose problems – are estimation of filling the closed estuaries-reservoirs in north-west area of the Black sea and long–term forecasting of their condition during the spring period of year. The first task – an analysis of conditions of the Hadzhibeysky estuary in the presence of an exceptional spring flood and rain floods of exceedance probability (P = 1%). The second task – is to develop a methodology for the long-term forecasting of filling of the Hadzhibeysky estuary during the spring flood, which is the most abundant phase in the hydrological regime into the territory.
Results. For the first time, the possibility of assessing the filling degree surface water from melting snow and rainfall when the estimated probability of exceeding P=1% in the closed estuaries-reservoirs of the Black Sea areas. The method of the long-term forecast of surface water during the spring period for the closed estuaries was substantiated. Typification of spring floods in accordance with their water content according to the model – discriminant function DF, which takes account of the complex of factors having an influence upon conditions of spring flood formation. Setting the probability of occurrence of the forecasting flow layers in the long-term period are implemented.
Conclusion. This method allows risk assessment for sustainable land – and water use planning within the Black Sea estuaries. The method of the long-term forecast was realized by the author in operational work at the Hydrometeorological Center of the Black and Azov Seas.
Calculation of water balance China Lake (between 2008-2014)
Authors: Shakirzanova Zh.R. , Medvedeva Y.S. , Yaneva M.D. 
Published: November 2018

Introduction. The main characteristic of hydrometeorological mode of China Lake, is the water balance of inland waters, defined process flow and water flow. Based on the water balance is determined by water exchange, physical and chemical processes in reservoirs and estimated effects of measures aimed at possible economic use of water resources.
Purpose. The aim is analyze of physical - geographic, morphometric, hydrological, hydraulic characteristics of China Lake and the rivers that feed them; calculation of the components of the water balance of the lake China (in 2008-2014) and determine the water balance of residuals.
Methods. In the analysis of available materials observations known statistical methods used; in determining the unknown components of water balance - similar hydrological methods and operating regulations.
Results. Receipt of lake water balance China (2008-2014) in the largest extent determine precipitation on the water surface of the lake (from 17 to 77%), while expenditure is the highest percentage of evaporation from 38,7 to 86,1%. The greatest value of residuals observed in the summer months, received their size residuals are found within the acceptable.
Conclusion. The authenticity of the definition of the components of the water balance of the lake. China will also be checked accuracy of the values of salinity of water in the reservoir as a result of payments salt balance.
Current situation of water quality Dniester River basin in transboundary areas
Authors: Kolisnyk A.V. 
Published: November 2018

Introduction. Today there are significant problems of transboundary pollution of the Dniester River basin in Ukraine, including within the Vinnitska oblast.
Purpose. The aim is to assess the current state of the watercourses of the Dniester River basin in transboundary areas with the Republic of Moldova, within the Vinnytska oblast by 2013.
Methods. Evaluation of current watercourses quality in Dnister basin was performed based on the Methodology of environmental assessment of watercourses quality for the relevant category and on the Methods integrated assessment of groundwater contamination.
Results. The results of water quality evaluation of the river Dniester basin in cross-border areas are assigned to them "satisfactory" and "bad" (the average and maximum environmental indices) features state and "dirty" and "dirty" qualifications purity by the Method of environmental assessment of watercourses quality in the relevant categories. By the Method of integral estimation of water courses contamination within the basin of river Dnister in Vinnytska oblast contamination status changed from "harmless" to "intensive". This shows a significant contamination of the river Dniester water basin.
Conclusion. In order to improve the ecological state of the river basin it is necessary to conduct comprehensive monitoring of rivers, set GDS the priority given indicators of water quality, improve the culture of land and water use in watersheds. Priority execution of these measures should be in parts of the basin, characterized by the worst quality. Improvement of the situation with river Dnister basin in the cross-border region with Republic of Moldova should only be done on the state level with help of Euroregion "Dniester" initiative.
Determination of constituents receipt Kakhovka Reservoir water balance
Authors: Koryagina O.S. 
Published: November 2018

The study of the reservoirs is of great scientific interest and is of practical importance for the solution of problems of rational use and protection of water resources. The paper describes the latest reservoir in the cascade of Dnipro Kakhovka Reservoir and its component of water balance. The methods of determining the components of the water balance that were once offered the Kakhovka hydrometeorological observatory are submitted. Great attention is drawn to the surface flow of water into the reservoir from unexplored rivers, which is determined by the method of analogy. The probable error of this method, in turn, is equal to for monthly values 30-50% and annual – 10-20%. So, there is provided somewhat different a method for determining the surface flow using the curve of security component amount of annual precipitation, maps of the norm runoff and tables SNiP 2.01.14.83. The proposed method simplifies and accelerates the process of calculating the amounts of surface water flow in unexplored rivers to Kakhovka reservoir.
Physical fundamental of layered structure stability of river-sea region (on the example of the Kola Bay)
Authors: Bardan S.І. , Dolgonosov B.M. , Serbov N.G. 
Published: November 2018

Introduction. The process of transfer of dissolved salts in the mixing zone of river-sea in the early stages of mixing. Using the equation of convection-diffusion of impurity transport using variable coefficients of diffusion processes for the analysis of neighborhoods interfaces solutions. The analytical description and modeling of the processes and to assess their impact on the various components of the ecosystem.
The experimental data. We used materials of field observations in the areas of water mixing Kola Bay total length of over 60 km. and the period of renovation of water in the mixing zone, depending on the season at 3-10 days. The results of measurements of the hydrophysical parameters in Kola Bay are presented according to the 25 stations separately for spring and autumn seasons, with a total of more than 5600 field observations.
Results. On the basis of the analytical solution of the problem set that microcurrents gradient across the axis of elongation of form bi-layer hydrodynamic barrier layer, with the effect of blocking the diffusion of ion transport, which contributes to the conservation and sustainability of the layered structures. The results of field measurements for the Kola Bay, confirming the theoretical conclusions. Lamellar structure is formed in the areas of initial contact treatment of various origins, comes from a steady beam isohaline 10-33 ‰, which spreads along the fiber with isohaline 24,7 ‰, extending the strong deceleration at a steady angle of inclination of the border section area of river-sea.
Conclusions. The theoretical conclusions about the formation of a special layer at the boundaries of the mixing zone, the physical effect of blocking ion transport and accelerates the heat transfer through the boundary between fresh and marine waters. Modeling of pollutant transport model for lamellar. Various models of formation of the layered structure in contact marine and fresh waters with different ionic composition.
Current distribution of wind in Morocco
Authors: Slizhе M.O. , Semergei-Chumachenko A.B. , Youssef El Hadri 
Published: November 2018

Information about wind is widely used in many sectors of the economy. Wind also causes many dangerous and extreme weather events. Modern climate changes require a certain revision of weather patterns previously accepted for the area. This article provides information on the current space and time distribution of wind characteristics within the territory of Morocco. During the period of 2005-2014 some monthly average wind speed values and data on repeatability of wind directions by gradations were obtained on the basis of physical and statistical analysis of results of observations of wind speed and directions performed at 26 stations.
The authors defined the character of distribution of monthly averages of wind speed within the territory and its seasonal changes. Most of the territory is covered by mountains of Morocco which encourages development of local winds. At central and northern regions of Morocco predominance of weak winds due to complex orography of terrain is observed. In the central part of Morocco there is a region with the lowest values of wind speed. Formation of the wind regime at the coastal stations takes place in a developed breeze circulation. Wind speed and direction are significantly different at the nearby stations, such as Larache and Chefchaouen, Meknes and Fez.
Increase of wind during the warmer half of a year was revealed at all stations. Nature of annual variation of average wind speed at the stations allows us to split the stations into two groups. The first group includes the stations where the average wind speed increases in summer and decreases in winter. The second group includes the stations where the average wind speed increases in spring and decreases in autumn. In the southern part and along the coast, where the terrain is flat, an increase of wind speed is observed. On open plains of the southern part of Atlantic coast during all seasons wind has a direction corresponding to direction of trade winds of the Northern hemisphere. It should be noted that the main factor forming air circulation within the territory of Morocco is represented by trade winds the intensity of which nearly doubles from summer to winter.
Formation of wind directions at the stations takes place mainly under the influence of terrain of the area. At many stations predominant wind direction in January changes by 180º in comparison to the respective July values. Therefore, characteristics of the wind regime of Morocco in 2005-2014 consist in increase of wind speed in the coastal zone and decrease thereof in mountain areas together with presence of two types of annual variation of wind speed depending on physical and geographical conditions.
Results of the numerical modelling of intra-annual variability of characteristics of the hydrological regime of the Kuyalnik Liman lagoon
Authors: Tuchkovenko Yu. S. , Kushnir D. V. 
Published: November 2018

In order to solve the problems of diagnosis and forecast of spatial-temporal variability of hydrological characteristics of the Kuyalnik Liman (water level, salinity and temperature) which cause chemical and biological processes occurring therein, and, therefore, affect the properties of brine and therapeutic mud, a non-stationary 3D numerical hydrothermodynamic model Delft3D-FLOW was applied.
The model can be applied for research of the features and forecasting of spatial-temporal variability of hydrological characteristics of the Kuyalnik Liman under the influence of natural and anthropogenic factors forming its hydrological regime. Such opportunity is also indicated by the results of adaptation of the model to the Kuyalnik Liman conditions and its validation that are specified in this work.
The important role of accounting of small streams flowing into the liman and accurate setting of intensity of storm rainfall during modelling is also shown. It is found that at the time of storm winds with longitudinal directions in relation to the liman’s water surface, the difference of watermarks in its northern and southern parts may reach 0.35-0.4 m.
An assessment of spatiotemporal distribution of drought in Transcarpathian region during the nearest perspective until 2050
Authors: Semenova I. G. 
Published: November 2018

The paper describes the features of spatiotemporal distribution of drought at long-time periods in Transcarpathian region under the projected temperature and precipitation regime in the period of 2020-2050. Analysis of temperature and moisture conditions was produced using the CORDEX climate modeling data for climate scenarios of RCP4.5 and RCP8.5. It is shown that an increase of mean annual air temperature at the stations will occur mainly due to increasing of winter temperatures in both scenarios. The average annual precipitation sum will increase insignificantly, but will be observed the opposite trends in winter and summer precipitation. Evaluation of spatial and temporal distribution of drought using drought index SPEI showed that expected a general increase of the regional aridity during the studied period. Weak droughts will be prevail in both scenarios with amount about 7-11 cases per 31 years. At the same time, under the relatively mild scenario RCP4.5 the droughts are predicted more intensive, and under both scenarios the total number of moderate and severe droughts increases on time scales more than one year. The time course of dry and wet periods almost the opposite between scenarios, but in both scenarios is expected an increase of duration and intensity of drought episodes after mid of 2030s.
Change of hydrological and morphometric characteristics of Kuyalnik Liman after inflow of seawater
Authors: Adobovsky V. V. , Sokolov E. V. 
Published: November 2018

The water level of the liman, volume and area of surface reduced to record low values as a result of intensification of evaporation process in 2014. By the autumn of 2014 the liman was on the verge of extinction. Entry of seawater in the liman through the pipeline began in December of 2014 to prevent environmental degradation of the liman.
Purpose of this publication consists in analyzing the changes of hydrological and morphometric characteristics of Kuyalnik liman in 2014-2016 associated inflow of sea water.
Methods of study. Hydrological and morphometric characteristics of the liman were calculated on the basis of: field studies, bathygraphic curves, data of satellite images «Landsat».
Results. There was dynamics of change of water surface area, volume, level and salinity of liman’s water during the driest periods, at the time and after the inflow of seawater into the liman. The results of measurements of discharge of seawater and coastal watercourses. The effect of evaporative processes taking into account temperature conditions (Odessa, Lyubashevka) on liman’s hydraulicity after the cessation of seawater supply was analyzed.
Conclusion. Inflow of seawater into the liman after the first entry of seawater allowed to temporarily stabilize water-salt regime of the liman, however, hydrological and morphometric characteristics of the liman in autumn of 2015 almost returned to the values of early autumn of 2014. During subsequent inflows of seawater into the liman it is desirable to maintain the regime observed during the inflow of water in 2014-2016.
Agroclimatic zoning of the northern grain-producing territory of Kazakhstan
Authors: Baisholanov S. S. , Polevoy A. N. 
Published: November 2018

Introduction. The existing agroclimatic handbooks in Kazakhstan are outdated in informational and technological relation. Therefore it is necessary to conduct reassessment of agroclimatic resources.
Purpose. The agroclimatic zoning of the territory of northern Kazakhstan in terms of heat supply and moisture content.
Methods. Data of meteorological stations over 1981-2014 were used. Methods of statistic and climatologic processing of data were applied. Agroclimatic maps were developed using the ArcGIS 10.1 software.
Results. Analysis of spatial distribution of values of moisture coefficient K and sums of active air temperatures above 10оC provided an opportunity to single out 6 agroclimatic zones of plain territory of Kazakhstan. Zones from 3 to 6 are subdivided into two types in terms of thermal conditions. There are 3 agroclimatic zones singled out within the territory of North Kazakhstan Region, 4 zones – in Kostanai region, 4 zones – in Akmola region, 2 zones – in Pavlodar region. Distribution of drought characteristics, hot dry winds and climatic terms for beginning of spring field works within Akmola region's agroclimatic zones was given as an example for systematization of spatial distribution of respective values.
The first zone with moderately humid and moderately warm climate has severe droughts with recurrence of 2%, hot winds of moderate intensity are observed during 2-3 days, climatic terms for beginning of spring field works fall on 15th-19th of May. The fourth zone with moderately dry and warm climate has severe droughts with recurrence of 30-35%, hot winds of moderate intensity are observed during 20-25 days, climatic terms for beginning of spring field works fall on 5th-7th of May.
Conclusions. There are 3 agroclimatic zones singled out within the territory of North Kazakhstan Region, 4 zones – in Kostanai region, 4 zones – in Akmola region, 2 zones – in Pavlodar region.
Hydrological science in universities and perspectives of its further development in Ukraine
Authors: Khilchevskyi V. K. , Gopchenko E. D. , Loboda N. S. , Obodovskyi O. G. , Grebin V. V. , Shakirzanova Zh. R. , Yushchenko Y. S. , Sherstyuk N. P. , Ovcharuk V. A. 
Published: November 2018

Development of the Hydrology in universities of Ukraine is the formation and development of scientific schools, which promote of the better training of professionals.
Purpose of the article - to show the history of hydrological science in higher educational institutions of Ukraine, the formation of scientific schools, their achievements and problems, outline prospects for the development of Hydrology in universities .
The article presents the history of hydrological science in higher educational institutions of Ukraine since 1922, when E. Oppokov first time in Ukraine established the Department of Hydrology at the Kiev Polytechnic Institute, that passed difficult path of transformation and now is presented at the National University of Water Management and Nature (Rivne). It was described the development of hydrology at the Odessa State Environmental University (since 1932), Yuriy Fedkovych Chernivtsi National University (since 1946), Taras Shevchenko National University of Kyiv (since 1949), Oles Gonchar Dnipro National University (since 2008). The results of the work of scientists hydrologists at these universities, especially Odessa scientific school of theoretical and applied hydrology and Kiev University scientific school of hydrochemistry and hydroecology was considered.
Hydrological Sciences at the Universities of Ukraine have a long tradition that has formed during last century. In general, it is today developing in the mainstream global hydrology. Prospects of Hydrological Sciences is closely linked to prospects of the national economy. Ukrainian hydrologists must work more closely with international institutions on joint research projects. The task of universities is not only intensify research, but also in improving the training of specialists hydrologists from the time when hydrology was included in "Earth Sciences".
Normal law of distribution of wind velocity vector in polar coordinates
Authors: Shkolnyy E. P. 
Published: November 2018

It is impossible to organize wind energy systems without studying of wind speed regime at the surface layer of the atmosphere within a specific area and at climatic scales. Such studies are often accompanied by approximations of probabilities of wind speed performed in the form of normal law of a system of random values presented by a zonal u and a meridional u which are components of a wind speed vector. It is suggested that, for the purposes of wind energy, display of a wind speed vector in polar coordinates (r, α) where r is a module of wind speed and α is a polar angle appears to be more preferable. The article shows a transform from a normal law of distribution of probabilities with density f(u,u) to a normal law distribution with density f(r,α) completed by means of functional transformation with elliptic dispersion in place. Based on a normal law of distribution f(r,α) and through integration with respect to corresponding variables individual distributions of probabilities f(r) and f(α) as well as conditional distributions of probabilities f(r/α) and f(α/r) were obtained in the areas of their existence. The article shows individual distributions in case of circular and elliptic dispersion of a wind speed vector. It shows that an individual distribution of a wind speed probability in case of circular dispersion and in the absence of correlated dependence turns into the Rayleigh's distribution and a conditional distribution of a polar angle degenerates in an even distribution. The cases of distributions with dispersions of a wind speed module having elliptic properties subject to availability of correlated connection between wind speed components were also studied. Calculation of probabilities of a polar angle being within different sections of the area 0≤α≤2π with set values of a wind speed module also took place. Numerical experiments proved the advantage of such modeling of distributions of wind speed vector.