The modelling of bifurcations of the statistical distributions of the concentrations of ammonia nitrogen in the river Desna

1Osadchiy, VI
1Osadcha, NN
1Kovalchuk, LA
1Skrynyk, OY
1Ukrainian Hydrometeorological Institute under the State Emergency Service of Ukraine and the NAS of Ukraine, Kyiv
Dopov. Nac. akad. nauk Ukr. 2016, 9:88-93
Section: Geosciences
Language: Russian

Stochastic bifurcations of the probability density of the nitrogen concentration of ammonia in the river Desna are explained as a result of the accidental coincidence of two natural processes: reduced water flow and high thermal background. The reliability of the output is about 75 %. The modeling is done with a stochastic differential equation with the control parameter.

Keywords: ammonia nitrogen, probability density, stochastic bifurcations, stochastic differential equation
  1. Osadchiy V. I., Kovalchuk L. A. Reports of National Academy of Sciences of Ukraine, 2013, No 4: 97–103 (in Russian).
  2. Nicolis G., Prigogine I. Exploring complexity, Moscow: Mir, 1990 (in Russian).
  3. Vadivasova T. E., Anishchenko V. S. Izv. vuzov "PND", 2009, No 5: 3–16 (in Russian).