The study of preferential water flows and convective heat transfer using the method of temperature labeling

• Published in: Eurasian soil science Vol. 44; no. 6; pp. 670 - 676
• Main Authors: Umarova, A. B., Samoilov, O. A.
• Format: Journal Article
• Language: English
• Published: Dordrecht SP MAIK Nauka/Interperiodica 01.06.2011; Springer; Springer Nature B.V
• Subjects: Earth and Environmental Science; Earth Sciences; Geotechnical Engineering & Applied Earth Sciences; Heat transfer; Labels; Loam soils; Lysimeters; Methods; Snowmelt; Soil mechanics; Soil Physics; Soil sciences; Soil temperature; Soils; Spatial distribution; Temperature measurement; Water flow; Russia, Moscow; Water Migration; EURASIAN Soil Science; Soil Temperature; Soddy Podzolic Soil; Temperature Logger
• ISSN: 1064-2293; 1556-195X
• DOI: 10.1134/S1064229311060160

The proposed method of temperature labeling makes it possible to study the convective heat transfer by fast water flows. A filtration experiment on the transfer of heated moisture in the plow layer of a light loamy soddy-podzolic soil of Moscow region has been performed. The high unevenness of the front of the water migration in the experiment is related to the spatial distribution of the major pores and leads to sharp changes in the soil temperature. Temperature measurements in large lysimeters of Moscow State University filled with soddy-podzolic soils indicate that there are short periods of rapid changes in the soil temperature during the snowmelt season and upon heavy showers. These changes are related to intense gravitational water flows. In the soils with a distinct blocky structure of the upper horizon, the convective transfer of heat is better expressed than that in the soils with a crumb or granular structure of the plow layer.