DBPapers
DOI: 10.5593/SGEM2014/B32/S13.038

THEORETICAL MODEL OF DESERTIFICATION PROCESS

A. Khantadze, N. Tsivtsivadze, L. Matchavariani, L. Lagidze, N. Paichadze, N. Motsonelidze, M. Vakhtangishvili
Wednesday 1 October 2014 by Libadmin2014

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-14-8 / ISSN 1314-2704, June 19-25, 2014, Book 3, Vol. 2, 281-288 pp

ABSTRACT
In the given article the attempt of desertification process’ particular theoretical model design is considered, in which main physical mechanism – soil’ active layer drying off and its step by step structural changes, is presented. The abovementioned process is reflected in soil physical parameters (density, specific heat capacity, transfer soil heat conductivity coefficient) which in case of desertification become dependent upon the temperature, however heat transfer mechanism in the soil gets a non-linear nature, as a result of which strong heat accumulation and growth of temperature in time are observed in the active soil layer. Indicated process, representing the "Greenhouse Effect", continues until arid soil structure gets quite a new appearance, with new physical parameters. By this way it is possible to get the analytical solution of non-linear heat conductivity’ equation, characterizing the desertification process.

Keywords: “Greenhouse Effect”, desertification, soil conductivity.

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