Parameters of modeling radon transfer through soil and methods of their determination

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5 Citations (Scopus)

Abstract

The paper considers diffusion-convection and diffusion models of radon transfer through soil and their main parameters, namely convection rate, diffusion and emanation coefficients. It is shown that physical interpretation and values of these parameters depend on the measurement method. It is proposed to consider modeling parameters as phenomenological ones and to determine them on basis of radon activity in soil pores measured under natural conditions. A simple method is proposed for the determination of parameters under specific geological and climatic conditions based on measurement of radon volumetric activity in pores at two twice different depths. The article presents the results of measuring effective diffusion and emanation coefficients of highly-dispersed clay soils of Tomsk (Russia) obtained by different methods under both laboratory and natural conditions, their analysis is conducted.

Original languageEnglish
Pages (from-to)151-157
Number of pages7
JournalJournal of Applied Geophysics
Volume80
DOIs
Publication statusPublished - May 2012

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radon
soils
modeling
convection
coefficients
soil
diffusion coefficient
porosity
measurement method
Russian Federation
clay soil
clays
parameter
method

Keywords

  • Convection
  • Diffusion
  • Emanation
  • Radon
  • Soils
  • Transfer

ASJC Scopus subject areas

  • Geophysics

Cite this

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AB - The paper considers diffusion-convection and diffusion models of radon transfer through soil and their main parameters, namely convection rate, diffusion and emanation coefficients. It is shown that physical interpretation and values of these parameters depend on the measurement method. It is proposed to consider modeling parameters as phenomenological ones and to determine them on basis of radon activity in soil pores measured under natural conditions. A simple method is proposed for the determination of parameters under specific geological and climatic conditions based on measurement of radon volumetric activity in pores at two twice different depths. The article presents the results of measuring effective diffusion and emanation coefficients of highly-dispersed clay soils of Tomsk (Russia) obtained by different methods under both laboratory and natural conditions, their analysis is conducted.

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