Sequential infiltration analysis of infiltration curves measured with disc infiltrometer in layered soils

Moret‐Fernández, David; Latorre, Borja; Lassabatère, Laurent; Prima, Simone Di; Castellini, Mirko; Yılmaz, Deniz; Angulo-Jaramilo, R.

doi:10.1016/j.jhydrol.2021.126542

Cited by 13 publications

(29 citation statements)

References 38 publications

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“…S and K Hk were calculated by applying the Sequential Infiltration Analysis (SIA) (Moret-Fernández et al, 2021b) to the 1D transient cumulative infiltration curve, which runs from t = 0 to t at which free drainage begins (Fig. 1).…”

Section: Estimation Of K Hk S and θ S From The 1d Cumulative Infiltr...mentioning

confidence: 99%

“…To this end, a 20 cm-length transparent cylinder should be used. The 1D downward infiltration method based on the inverse analysis of a single transient cumulative infiltration at saturated conditions allows determining the soil sorptivity, S, and K s (Lassabatere et al, 2009;Latorre et al, 2015;Moret-Fernández et al, 2021b), but not the β parameter (Latorre et al, 2018) defined Haverkamp et al (1994aHaverkamp et al ( , 1994b. S, which is defined as a measure of the capacity of a medium to absorb or desorb liquid by capillarity (Philip, 1957), can be expressed as function of the initial (θ i ) and saturated (θ s ) water content, K s and the α and n parameters of the van Genuchten (1980) water retention model (Moret-Fernández et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…However, although this method is accurate, can work with short 5 cm-high cores and run with disturbed and undisturbed soils, the inverse analysis is time consuming (from 2 to 20 days) and requires high-performance computing. On the other hand, since the inverse analysis of transient infiltrations measured in stratified soils profile leads to erroneous estimates of soil hydraulic parameters (Moret-Fernández et al 2021b), the inverse analysis of a 1D upward infiltration should be limited to homogeneous soil profiles. However, soil heterogeneity is the rule rather than the exception under field conditions (Abou Najm et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

“…However, soil heterogeneity is the rule rather than the exception under field conditions (Abou Najm et al, 2019). For example, the application of the Sequential Inverse Analysis (SIA) (Moret-Fernández et al, 2021b) method on 20 infiltration experiments showed that in 85 % of the soils analyzed, the thickness of the homogeneous topsoil layer was less than 3 cm . This problem associated with soil layering could be minimized, for instance, by using shorter soil columns or analyzing steady-state infiltration curves.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A novel double disc method to determine soil hydraulic properties from drainage experiments with tension gradients

Moret‐Fernández

Latorre²

2022

Journal of Hydrology

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Section: Estimation Of K Hk S and θ S From The 1d Cumulative Infiltr...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A novel double disc method to determine soil hydraulic properties from drainage experiments with tension gradients

Moret‐Fernández

Latorre²

2022

Journal of Hydrology

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“…Working in the field in a Mediterranean vineyard, Alagna et al (2019) also suggested that a simple infiltration experiment is suitable enough to detect the effect of the altered upper layer on flow. Recently, Moret-Fernández et al (2021) developed a method to analyze the 3D infiltration data collected in layered soils regardless of whether the upper soil layer is finer or coarser than the subsoil. In particular, the time when the infiltration bulb reaches the interface between the upper soil layer and the subsoil can be identified by sequentially fitting a cumulative infiltration model to the data and then examining how the root mean square error, RMSE , changes during the run given that some of the properties of the deeper soil layer are expected to also influence the measured infiltration.…”

Section: Introductionmentioning

confidence: 99%

A Numerical Test of Soil Layering Effects on Theoretical and Practical Beerkan Infiltration Runs

Lai

Bagarello

Iovino

2023

Preprint

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With reference to a more compacted and less conductive upper soil layer overlying a less compacted and more conductive subsoil, a simple three-dimensional (3D) infiltration run is expected to yield more representative results of the upper layer than the subsoil. However, there is the need to quantitatively establish what is meant by more representativeness. At this aim, numerically simulated infiltration was investigated for a theoretically unconfined process under a null ponded head of water (d0H0 setup, with d = depth of ring insertion and H = ponded depth of water) and a practical beerkan run (d1H1 setup, d = H = 1 cm). The considered layered soils differed by both the layering degree (from weak to strong) and the thickness of the upper soil layer (0.5-3 cm). It was confirmed that water infiltration should be expected to be more representative of the upper soil layer when this layer is the less permeable since, for a 2-h experiment, the instantaneous infiltration rates for the layered soil were 1.0-2.1 times greater than those of the homogeneous low permeable soil and 1.3-20.7 smaller than those of the homogeneous coarser soil that constituted the subsoil. Similarity with the homogeneous fine soil increased as expected as the upper layer became thicker. For a weak layering condition, the layered soil yielded an intermediate infiltration as compared with that of the two homogeneous soils forming the layered system. For a strong layering degree, the layered soil was more similar to the homogeneous fine soil than to the homogeneous coarse soil. Using the practical setup instead of the theoretical one should have a small to moderate effect on the instantaneous infiltration rates since all the calculated percentage differences between the d1H1 and d0H0 setups fell into the relatively narrow range of -18.8% to +17.4%. A sequential analysis procedure appeared usable to detect layering conditions but with some modifications as compared with the originally proposed procedure. The practical setup enhanced the possibility to recognize the time at which the characteristics of the subsoil start to influence the infiltration process. In conclusion, this investigation contributed to better interpret both the theoretical and the practically established 3D infiltration process in a soil composed of a less conductive upper soil layer overlying a more conductive subsoil and it also demonstrated that modifying a recently proposed procedure only using infiltration data could be advisable to determine the time when layering starts to influence the process.

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A numerical test of soil layering effects on theoretical and practical Beerkan infiltration runs

Bagarello,

Iovino,

Lai

2023

Vadose Zone Journal

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With reference to a more compacted and less conductive upper soil layer overlying a less compacted and more conductive subsoil, a simple three‐dimensional (3D) infiltration run is expected to yield more representative results of the upper layer than the subsoil. However, there is the need to quantitatively establish what is meant by more representativeness. At this aim, numerically simulated infiltration was investigated for a theoretically unconfined process under a null ponded head of water (d0H0 setup, with d = depth of ring insertion and H = ponded depth of water) and a practical Beerkan run (d1H1 setup, d = H = 1 cm). The considered layered soils differed by both the layering degree (from weak to strong; subsoil more conductive than the upper soil layer by 2.3–32.4 times, depending on the layering degree) and the thickness of the upper soil layer (0.5–3 cm). It was confirmed that water infiltration should be expected to be more representative of the upper soil layer when this layer is the less permeable since, for a 2‐h experiment, the instantaneous infiltration rates for the layered soil were 1.0–2.1 times greater than those of the homogeneous low‐permeable soil and 1.3–20.7 smaller than those of the homogeneous coarser soil that constituted the subsoil. Similarity with the homogeneous fine soil increased as expected as the upper layer became thicker. For a weak layering condition, the layered soil yielded an intermediate infiltration as compared with that of the two homogeneous soils forming the layered system. For a strong layering degree, the layered soil was more similar to the homogeneous fine soil than to the homogeneous coarse soil. Using the practical setup instead of the theoretical one should have a small to moderate effect on the instantaneous infiltration rates since all the calculated percentage differences between the d1H1 and d0H0 setups fell into the relatively narrow range of −18.8% to +17.4%. A sequential analysis procedure appeared usable to detect layering conditions but with some modifications as compared with the originally proposed procedure. The practical setup enhanced the possibility to recognize the time at which the characteristics of the subsoil start to influence the infiltration process. In conclusion, this investigation contributed to better interpret both the theoretical and the practically established 3D infiltration process in a soil composed of a less conductive upper soil layer overlying a more conductive subsoil and it also demonstrated that modifying the recently proposed sequential analysis procedure only using infiltration data could be advisable to determine the time when layering starts to influence the process.

show abstract

Sequential infiltration analysis of infiltration curves measured with disc infiltrometer in layered soils

Cited by 13 publications

References 38 publications

A novel double disc method to determine soil hydraulic properties from drainage experiments with tension gradients

A novel double disc method to determine soil hydraulic properties from drainage experiments with tension gradients

A Numerical Test of Soil Layering Effects on Theoretical and Practical Beerkan Infiltration Runs

A numerical test of soil layering effects on theoretical and practical Beerkan infiltration runs

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