期刊
ADVANCES IN WATER RESOURCES
卷 129, 期 -, 页码 118-130出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.advwatres.2019.05.005
关键词
Soil hydraulic properties; Single ring infiltration experiments; BEST (Beerkan Estimation of Soil Transfer parameters); Kosugi hydraulic parameters; van Genuchten hydraulic parameters; Quasi-exact implicit formulation
资金
- Salvador de Madariaga Mobility Grant - Ministry of Education in Spain
- Dumont d'Urville travel grants
- New Zealand Ministry for Business, Innovation and Employment under the MBIE S-map Next Generation research programme
Soil hydraulic characterization is crucial to describe the retention and transport of water in soil, but current methodologies limit its spatial applicability. This paper presents a cost-effective general Beerkan Estimation of Soil Transfer parameters (BEST) methodology using single ring infiltration experiments to derive soil hydraulic parameters for any unimodal water retention and hydraulic conductivity functions. The proposed method relies on the BEST approach. The novelty lies in the use of Kosugi hydraulic parameters without need for textural information. In addition, the method uses a quasi-exact formulation that is valid for all times, which avoids the use of approximate expansions and related inaccuracy. The new BEST methods were tested against numerically generated data for several contrasting synthetic soils, and the results show that these methods provide consistent hydraulic functions close to the target functions. The new BEST method is accurate and can use any water retention and hydraulic conductivity functions.
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