Updated: 2025-12-26
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0215U009374, 0115U006850 , R & D reports
"Description of modern hydrochemical and hydrological regimes of the lagoon, development of recommendations for its improvement". Part of technical-economic calculation on the project "Development of designing estimates for reconstruction of the connecting channel between the Tyligulskyi Lyman lagoon and the Black Sea in the area of Kominternivskyi district of Odeska Oblast Region.
Tuchkovenko Yurii Stepanovich,
25-12-2015
The Odessa State University of Ecology
Report on research effort (final version) contains 267 pages, 136 figures, 61 tables, 170 references. Subject of research: water-salt balance, hydrological and hydrochemical regimes of the Tyligulskyi Lyman lagoon. Object of research: the Tyligulskyi Lyman lagoon of the North-west part of the Black Sea. The purpose of this work is to scientifically substantiate the expediency of operation of the artificial channel, connecting the Tyligulskyi Lyman lagoon to the sea; to determine its role in the formation of the hydrological and hydrochemical regimes of the lagoon in the 20th and the 21th centuries, with due account for changing of climatic factors and water utilization activity in the catchment area of the lagoon; to develop theoretically well-grounded guidelines for morphometric characteristics of the channel and regimes of its operation in the current climatic period, which will ensure stabilization and improvement of the hydrological and hydrochemical regime of the lagoon, preservation of its natural resources. Research techniques: conventional methods of statistical processing of information and data analysis, stochastic model "Climate-Runoff" for assessing the river water resources, with account of climatic changes and water utilization activity, numerical modelling of water-salt balance, hydrodynamic and hydrologic processes in the lagoon and water exchange between the lagoon and the sea through artificial connecting channel "Lagoon-Sea". The physiographic conditions of the Tyligulskyi Lyman lagoon and its catchment basin, hydrographic description of the lagoon, analysis of the hydrological and hydrochemical regime of the lagoon in the current conditions are presented, based on the 21th century observational data. Retrospective evaluation of water resources of rivers of the Tyligulskyi Lyman lagoon basin and their changes for the last decades is made. Predictive assessment of water resources of rivers of the lagoon catchment basin under climate changes in the 21th is shown. A retrospective analysis of conditions, under which the water-salt balance formation in the second half of the 20th century - the first decade of the 21th century occurs, was made using the model of water-salt balance. Scenario calculations of the dynamics of salinity and water level in the lagoon under different options of water exchange between the lagoon and the sea were performed as well. Assessments of water level and salinity variability in the Tyligulskyi Lyman lagoon under a variety of the reservoir functioning options in the 21th century climate conditions were obtained. On the basis of the results of the hydrodynamic modelling, an influence of the water exchange between the lagoon and the sea through the connecting channel (under different conditions of its functioning and morphological characteristics) on the water level and salinity variability in the lagoon was assessed. From the observational data analysis and results of the hydrodynamic modelling, a role of the water exchange between the lagoon and the sea through the connecting channel was identified. The theoretically grounded guidelines for stabilization and improvement of the current hydrological and hydrochemical regime of the lagoon are suggested (in particular, by guaranteeing a stable water exchange between the lagoon and the sea through the connecting channel "Lagoon-Sea"). THE TYLIGULSKYI LYMAN LAGOON, HYDROLOGICAL REGIME, HYDROCHEMICAL REGIME, WATER EXCHANGE WITH THE SEA, MODELLING
Богатова Ю.І.
Гельман В.З.
Гриб К.О.
Гриб О.М.
Кушнір Д.В.
Лобода Н.С.
Терновой П.А.
Тучковенко О.А.
Тучковенко Ю.С.
2020-04-02
Updated: 2025-12-26
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