The stochastic process of changing the concentration of ammonia nitrogen in the Desna river

TitleThe stochastic process of changing the concentration of ammonia nitrogen in the Desna river
Publication TypeJournal Article
Year of Publication2016
AuthorsOsadchiy, VI, Osadcha, NN, Kovalchuk, LA, Skrynyk, OY
Abbreviated Key TitleDopov. Nac. akad. nauk Ukr.
DOI10.15407/dopovidi2016.10.060
Issue10
SectionGeosciences
Pagination60-66
Date Published10/2016
LanguageRussian
Abstract

The stochastic process of change in the concentration of ammonia nitrogen in the Desna river for the period 1991—2003 is restored within adequate analytical models. We calculate the probability of the categories of water quality in the annual sections of the process. By solving the Kolmogorov—Fokker—Planck equation for the Ornstein—Uhlenbeck process, the reliable estimation of probability categories of the water quality, which is limited by 285 days, is determined in advance.

KeywordsKolmogorov—Fokker—Planck equation, Ornstein—Uhlenbeck process, probability categories of water quality, stochastic process
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