© R.I. Parovik1, I.A. Iljin1, P.P. Firstov2

1Kamchatka State University by Vitus Bering, Petropavlovsk-Kamchasky,683032, Russia
2Institute of volcanology and seismology, Far East Division, RussianAcademy of Sciences
Petropavlovsk-Kamchatsky, 683006, Russia; e-mail: romano_kgu@rambler.ru

This paper presents a simulated model of diffusion for mass transfer of 222Rn - emanation in alluvium deposits and in the surface layer of the atmosphere. Analytical solutions for this model were found by means of operational calculation. Obtained results meet the boundary conditions of an experiment.