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Open AccessArticle

A Note on One- and Three-Dimensional Infiltration Analysis from a Mini Disc Infiltrometer

Department of Natural Resources Management and Agricultural Engineering, Agricultural University of Athens, 75 Iera Odos Street, 11855 Athens, Greece
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Water 2018, 10(12), 1783; https://doi.org/10.3390/w10121783
Received: 24 October 2018 / Revised: 22 November 2018 / Accepted: 29 November 2018 / Published: 4 December 2018
(This article belongs to the Special Issue Insights on the Water–Energy–Food Nexus)
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Abstract

Disc infiltrometers are used to characterize soil hydraulic properties. The purpose of this study was to determine the difference between three- and one-dimensional infiltration and to calculate the infiltration shape parameter γ from a proposed analytical infiltration equation. One- and three-dimensional infiltration tests were done on three repacked soils (loam, sandy loam, and silty clay loam) for two negative pressure heads. A mini disc infiltrometer of a radius of 22.5 mm with suction that ranged from −5 mm to −70 mm was used. The difference between experimental three- and one-dimensional cumulative infiltration was linear with time, which confirmed the proposed equation. In this study, the shape parameter γ seems not to be seriously affected by the soil type and acquires values from 0.561 to 0.615, i.e., smaller than the value γ = 0.75, which is widely used. With these values, the criteria proposed for calculating hydraulic conductivity using three-dimensional infiltration data may be fulfilled in most soils. View Full-Text
Keywords: infiltration; soil sorptivity; mini disc infiltrometer infiltration; soil sorptivity; mini disc infiltrometer
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Kargas, G.; Londra, P.; Anastasiou, K.; Kerkides, P. A Note on One- and Three-Dimensional Infiltration Analysis from a Mini Disc Infiltrometer. Water 2018, 10, 1783.

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