The Mathematical Institute, University of Oxford, Eprints Archive

An estimate of energy dissipation due to soil-moisture hysteresis

McNamara, H. (2012) An estimate of energy dissipation due to soil-moisture hysteresis. Water Resources Research . (Submitted)

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Abstract

Processes of infiltration, transport and outflow in unsaturated soil necessarily involve the dissipation of energy through various processes. Accounting for these energetic processes can contribute to modelling hydrological and ecological systems. The well-documented hysteretic relationship between matric potential and moisture content in soil suggests that one such mechanism of energy dissipation is associated with the cycling between wetting and drying processes. Working from a time-series of soil moisture content data (taken in the south-west of Ireland), and making rather straightforward assumptions regarding the hysteretic relationship mentioned, the average rate of energy dissipation was found to be O(10−5).

Item Type:Article
Subjects:D - G > General
Research Groups:Oxford Centre for Collaborative Applied Mathematics
ID Code:1574
Deposited By:Peter Hudston
Deposited On:27 Jul 2012 08:36
Last Modified:27 Jul 2012 08:36

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