Analysis of the Role of Tortuosity and Infiltration Constants in the Beerkan Method

作者：Nasta Paolo^*; Lassabatere Laurent; Kandelous Maziar M; Simunek Jirka; Angulo Jaramillo Rafael

来源：Soil Science Society of America Journal, 2012, 76(6): 1999-2005.

DOI：10.2136/sssaj2012.0117n

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 (beta and gamma) 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 beta and gamma that have a large impact on the estimation procedure.

• 出版日期2012-12