Reevaluation of the evaporation method for determining hydraulic functions in unsaturated soils

O. Wendroth, W. Ehlers, J. W. Hopmans, H. Kage, J. Halbertsma, J. H.M. Wosten

Research output: Contribution to journalArticlepeer-review

154 Scopus citations

Abstract

A simple evaporation method for the determination of the hydraulic conductivity function and the water retention characteristic was developed and applied to a range of soils. During evaporation from the top of a 6-cm-high soil core, soil water pressure head at 1.5 and 4.5 cm below the soil surface was measured with tensiometers. Evaporative water loss was determined by weighing the soil column. The procedure for calculation of hydraulic functions was evaluated via numerical simulations. However, at water contents near saturation where hydraulic conductivity is high, hydraulic gradients cannot be determined with sufficient accuracy. Other measurement techniques are suggested that can supplement the evaporation method in the wet range. -from Authors

Original languageEnglish
Pages (from-to)1436-1443
Number of pages8
JournalSoil Science Society of America Journal
Volume57
Issue number6
DOIs
StatePublished - 1993

ASJC Scopus subject areas

  • Soil Science

Fingerprint

Dive into the research topics of 'Reevaluation of the evaporation method for determining hydraulic functions in unsaturated soils'. Together they form a unique fingerprint.

Cite this