Analysis of the Role of Tortuosity and Infiltration Constants in the Beerkan Method
- Paolo Nasta *a,
- Laurent Lassabatereb,
- Maziar M. Kandelousc,
- Jirka Šimůnekd and
- Rafael Angulo-Jaramilloe
- a Dep. of Land, Air and Water Resources, Univ. of California Davis, CA 95618
b Université de Lyon, Laboratoire d’Ecologie des Hydrosystèmes Naturels et Anthropisés, UMR5023 CNRS-ENTPE- Université Lyon 1, 3, rue Maurice Audin 69518 Vaulx-en-Velin, France
c Dep. of Land, Air and Water Resources, Univ. of California Davis, CA 95618
d Dep. of Environmental Sciences, Univ. of California Riverside, CA 92521
e Université de Lyon, Laboratoire d’Ecologie des Hydrosystèmes Naturels et Anthropisés, UMR 5023 CNRS-ENTPE- Université Lyon 1, 3, rue Maurice Audin 69518 Vaulx-en-Velin, France
It has recently been proposed to couple the Beerkan method with the Beerkan Estimation of Soil Transfer parameters (BEST) algorithm to facilitate the estimation of soil hydraulic parameters from an infiltration experiment. Although this simplified field procedure is relatively rapid and inexpensive, it has been doubted if the Beerkan method can represent a valid and reliable alternative to other conventional methods. This study explored the impact of the tortuosity parameter (p) and two infiltration constants (β and γ) included in the BEST algorithm using a sensitivity analysis applied to three experimental soils. The analysis that was validated using the numerical model HYDRUS 2D/3D indicates that the tortuosity is relatively insignificant compared to parameters β and γ that have a large impact on the estimation procedure.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
Copyright © 2012. . Copyright © by the Soil Science Society of America, Inc.