MODEL OF MIGRATION OF RADIONUCLIDES IN A RIVER SYSTEM
O. M. Zhukova,a N. M. Shiryaeva,b
N. K. Myshkina,b E. D. Shagalova,a
V. V. Denisova,b and V. V. Skuratb

UDC 504.453.054

The authors suggest a model of transfer of radionuclides 
in a river system, which relies on the principle of the chamber model, 
for the case of hydraulically stationary and chemically equilibrium 
conditions of interaction of radionuclides in the systems "water
-suspensions" and "water-bottom sediments." 
The model is based on analytical solutions of a system of equations 
for different conditions of ingress of radioactive contaminants into 
the river system: in the inlet cross section; with fallout of radiactive 
aerosols on the water surface; with ingress of radionuclides with 
surface flow from a contaminated water catchment. The model is verified 
using the data of radiation monitoring carried out on an experimental 
water catchment of the Iput river.

aRepublic Center of Radiation Control and Monitoring 
of the Natural Environment, State Committee for Hydrometeorology of 
the Republic of Belarus, Minsk, Belarus; email: us206@fax.by.mecom.ru; 
bInstitute of Radioenvironmental Problems, National Academy 
of Sciences of Belarus, Minsk, Belarus; email: irep@sosny.bas-net.by. 
Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 74, No. 4, pp. 
70-76, July-August, 2001. Original article submitted January 16, 2001.

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