Hydrochemical Indicators Dynamic in Surface Water

Mitryasova, Olena; Cieśla, Maksymilian; Nosyk, Anastasia; Mats, Andrii

doi:10.12911/22998993/140264

Cited by 6 publications

(6 citation statements)

References 9 publications

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“…Analysis of changes in water temperature (Fig. 3), despite the well-known facts of global warming, shows harmonic periodic fluctuations and even some decrease in temperature [21].…”

Section: Fig 2 Average Water Temperature Changesmentioning

confidence: 97%

“…1. The Inhul river basin is on the territory of Ukraine [21] Long-term monitoring of certain parameters allows building mathematical models for forecasting the evolution of surface waters to maintain sustainable use of water resources and prevent environmental crises [22−27]. Increased anthropogenic activity leads to excessive pollution of water resources [28−31].…”

Section: Introductionmentioning

confidence: 99%

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Prognosis models of nitrates and orthophosphates content in surface waters

Mitryasova¹,

Shybanova²,

Dzhumelia

2022

esanr

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The dynamics of hydrochemical parameters such as nitrates, and orthophosphates of surface waters were analyzed. Based on the analysis of wide temporal monitoring data, of prognosis nitrates and orthophosphates of the surface waters were carried out.The purpose is an assessment of the state of the surface water by nitrates and orthophosphates hydrochemical parameters and their regression analysis.The object of research – was to determine nitrates and orthophosphates indicators of the river water state during 12 years.The regression analysis method using the Windows Excel CurveExpert software was used to determine the empirical dependencies and search for connections.Against the background of high regulation of the Inhul river basin (the presence of 770 ponds and an irrigation system on 33 hectares, water use is carried out by more than 20 enterprises) showed the periodic nature of changes in hydrochemical parameters. Based on the obtained functions, prognoses to 2030 on annual averages were developed. The study is the basis for determining the mathematical model of natural fluctuations of the research indicators. Regression analysis allows obtaining a sinusoidal dependence on the orthophosphates content, which demonstrates 13 years fluctuation (R = 0.90). We have an 11-year sinusoidal wave with a period of 10 years and fairly high representativeness (R = 0.85) for nitrate content. The determined sinusoidal dependences of the integrated indicators of water quality allowed determining the average time of fluctuations concerning the processes of self-organization of river waters, which is about 11 years, and confirms the theory of "waves of life". The surface waters of the river are capable of self-renewal and their hydrochemical status has not yet reached a critical point, after which irreversible changes in the river ecosystem may occur.

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“…Analysis of changes in water temperature (Fig. 3), despite the well-known facts of global warming, shows harmonic periodic fluctuations and even some decrease in temperature [21].…”

Section: Fig 2 Average Water Temperature Changesmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Prognosis models of nitrates and orthophosphates content in surface waters

Mitryasova¹,

Shybanova²,

Dzhumelia

2022

esanr

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“…To successfully solve complex practical issues of modern ecology, especially those related to the assessment and prediction of the quality and condition of ecosystems, mathematical models, which are usually written in the form of algebraic, transcendental and differential equations are used [9]. These equations are the basis of the simulation mathematical model, which allows, using software, to determine (calculate), predict, evaluate, analyze various options (scenarios) of changes in space and time of the main indicators (characteristics) of the state of ecosystems depending on external and internal factors, which affect the course of various hydrophysical, hydrochemical and hydrobiological processes [10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

The use of ICT for mathematical calculations in the water quality assessment in the teaching of ecologists

Shakhman,

Bystriantseva

2023

J. Phys.: Conf. Ser.

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Research goal of the paper is the demonstration of computer technology integration in the modern educational process of teaching ecologists in practical classes on assessing the quality of water in water bodies, containing mathematical calculations. The use of modern information computer technologies in education will effectively contribute to the acquisition of a range of knowledge and skills on methods for water quality assessing in the field of water use and protection of water resources. The ability to use ICT will provide the ecologists with the ability to respond quickly to changes in the environment and make effective decisions in environmental management in future production activities.

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“…On the other hand, practice most often does not require the use of accurate modelling, the exact match of the models used to the actually occurring processes. As noted in [2], there are a large number of models of varying complexity that can be used to study the spread of pollutants in water bodies, the limits of applicability of models have been investigated, and recommendations have been developed for their practical application.…”

Section: Introductionmentioning

confidence: 99%

“…Changes of impurity concentration are not only due to the dilution, but also due to the effects of sorption, absorption, photosynthesis, etc. These processes are very common, sometimes prevailing, especially at low flow rates [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Mathematical modelling of hydrochemical processes in surface waters

Akhmedova

2023

E3S Web of Conf.

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In recent years, a large number of mathematical models of water quality have been developed which can be used for predictive calculations under certain conditions. This work is mainly devoted to the mechanical aspects of substances transport in watercourse systems. It is practically possible to quickly determine the concentration of impurities in a river only by methods of mathematical modelling of impurities transport.

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Hydrochemical Indicators Dynamic in Surface Water

Cited by 6 publications

References 9 publications

Prognosis models of nitrates and orthophosphates content in surface waters

Prognosis models of nitrates and orthophosphates content in surface waters

The use of ICT for mathematical calculations in the water quality assessment in the teaching of ecologists

Mathematical modelling of hydrochemical processes in surface waters

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