Investigation of dielectric spectra from moist soils during freezing-thawing processes

Autor:	Yu. I. Lukin, V. L. Mironov, S.A. Komarov
Rok vydání:	2008
Předmět:	Phase transition Materials science Freezing thawing Physics::Optics General Physics and Astronomy Thermodynamics Penetration (firestop) Dielectric Physics::Geophysics symbols.namesake Dielectric spectrum Soil water symbols Water content Debye model
Zdroj:	Russian Physics Journal. 51:907-911
ISSN:	1573-9228 1064-8887
DOI:	10.1007/s11182-009-9138-2
Popis:	A frequency spectrum of the complex dielectric permittivity of soils is measured in the range of frequencies from 0.5 to 15.0 GHz in the course of frost penetration and thawing. The phase transitions taking place during frost penetration and thawing are analyzed within the concept of the generalized refractive mixing dielectric model (GRMDM). Two types of water concurrently present in the soil are identified: bound and free water. Temperature dependences of the Debye model parameters for each type of water are given, and parameters of a dielectric spectroscopic model of frozen and thawed soils are found. The hysteresis phenomenon during the phase transition of the soil moisture is investigated.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5aa32cdaab70e7c71648a74dcb5dc967 https://doi.org/10.1007/s11182-009-9138-2 Zobrazit plný text záznamu Plný text ve formátu PDF