Impact of wildfire on heat and moisture transfer in a seasonally thawed layer of soil studied by numerical simulation

Impact of wildfire on heat and moisture transfer in a seasonally thawed layer of soil studied by numerical simulation

Numerical simulation was applied to the processes of heat and moisture transfer and for ice-water phase transition in a season-thawed soil layer. Analysis was performed for consequences of natural wildfire on the soil temperature and the thawing depth as a function of water retention by soil for the...

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Bibliographic Details
Published in:Thermophysics and aeromechanics Vol. 30; no. 6; pp. 1149 - 1156
Main Authors: Finnikov, K. A., Ponomareva, T. V., Ponomarev, E. I., Litvintsev, K. Yu
Format: Journal Article
Language:English
Published: Novosibirsk Kutateladze Institute of Thermophysics SB RAS 01-09-2023
Springer Nature B.V
Subjects:
Melting
Moisture
Permafrost
Phase transitions
Physics
Physics and Astronomy
Soil analysis
Soil layers
Soil temperature
Soil water
Thermodynamics
Wildfires
moisture transfer
soil
heat transfer
cryolithozone
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Summary:Numerical simulation was applied to the processes of heat and moisture transfer and for ice-water phase transition in a season-thawed soil layer. Analysis was performed for consequences of natural wildfire on the soil temperature and the thawing depth as a function of water retention by soil for the condition of Siberian permafrost zone. Calculations demonstrate that the permafrost thawing depth increases due to burnouts in the top organic horizon. The quantitative indexes of natural wildfire impact depend on water retention properties of the upper organic horizon of soil.
ISSN:1531-8699
0869-8643
1531-8699
DOI:10.1134/S0869864323060173