2014
DOI: 10.2166/nh.2014.159
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A constant head well permeameter formula comparison: its significance in the estimation of field-saturated hydraulic conductivity in heterogeneous shallow soils

Abstract: We evaluate the application and investigate various formulae (and the associated parameter sensitivities) using the constant head well permeameter method to estimate field-saturated hydraulic conductivity (Kfs) in a previously glaciated temperate landscape in the Scottish Borders where shallow soils constrain the depth of augering.In finer-textured soils, the Glover equation provided Kfs estimates, nearly twice those of the Richards' equation. For this environment we preferred the Glover equation with a correc… Show more

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Cited by 12 publications
(5 citation statements)
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“…In beech experimental sites with similar characteristics to ours (loam soils, 50–100 years), Archer et al. (2014) reported even lower K sat , ranging from 12 to 17 (cm d −1 ) (log: 1.08–1.23). Moreover, they observed that K sat in spruce was larger in contrast to beech, similar to PS A and B.…”
Section: Discussionsupporting
confidence: 77%
“…In beech experimental sites with similar characteristics to ours (loam soils, 50–100 years), Archer et al. (2014) reported even lower K sat , ranging from 12 to 17 (cm d −1 ) (log: 1.08–1.23). Moreover, they observed that K sat in spruce was larger in contrast to beech, similar to PS A and B.…”
Section: Discussionsupporting
confidence: 77%
“…Field‐saturated hydraulic conductivity ( K fs ) was estimated for six locations (two auger holes at each location, soil depths 0.04 to 0.15 and 0.15 to 0.25 m) at each field site using a CHWP (Talsma and Hallam, ). The Glover solution, with a correction for the effect of gravity (Reynolds et al ., ), was used to estimate K fs (Archer et al ., ).…”
Section: Methodsmentioning
confidence: 97%
“…A 0.06‐m diameter auger was used throughout the investigation (auger hole radius, a , between 0.0325 and 0.035 m, giving an H / a value of approximately 3). An H / a ratio of 3 or above is important for stable measurements (Archer et al ., ). A nylon brush was used to gently brush the auger hole walls to reduce smearing, with a pre‐wetting phase of 20 min to ensure saturation (Archer et al ., ) and shorten the time to reach steady‐state flow (Talsma and Hallam, ).…”
Section: Methodsmentioning
confidence: 97%
“…In contrast, a drywell's H a value can range from approximately 10 to 60. Also, in the absence of an independent determination of α, there are some doubts about the practicality of using borehole permeameter test to measure K s (Archer et al, 2014;Philip, 1985). Moreover, drilling of an additional borehole to perform the above techniques might not be practical at every drywell site because they are expensive, energy intensive, time-consuming, require a dry drilling method (a difficult technique), and need vast expertise.…”
Section: Deterministic Heterogeneity -Layered Soil Profilementioning
confidence: 99%