Analyzing subsurface drain network performance in an agricultural monitoring site with a three-dimensional hydrological model

Nousiainen, Riikka; Warsta, Lassi; Turunen, Mika; Huitu, Hanna; Koivusalo, Harri; Pesonen, Liisa

doi:10.1016/j.jhydrol.2015.07.018

Cited by 21 publications

(20 citation statements)

References 40 publications

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“…The highest simulated peaks computed with the dual-permeability and the single pore system models overestimated the measured peaks. This is in contrast with earlier field scale FLUSH simulations in subsurface drained clay soils, where modelled hourly drain discharge peaks were lower compared to the measurements (Nousiainen et al, 2015;Warsta et al, 2013).…”

Section: Hourly and Cumulative Drain Dischargecontrasting

confidence: 84%

“…Previous field scale studies with the FLUSH model have applied the latter method (e.g. Turunen et al, 2015a;Warsta et al, 2013;Nousiainen et al, 2015). When single pore system model is applied and the drain trenches are not present in computational grids, water cannot reach the drains (Fig.…”

Section: Water Balance and Effect Of The Drain Trenchmentioning

confidence: 99%

“…Hydrological models are regularly used to analyze the performance of field drainage systems (e.g. Nousiainen et al, 2015;Turunen et al, 2013). Two-dimensional (2-D) and three-dimensional (3-D) models can take into account the topography and spatial variability of soil hydraulic characteristics (e.g.…”

Section: Introductionmentioning

confidence: 99%

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Simulating 3-D water flow in subsurface drain trenches and surrounding soils in a clayey field

Salo

Warsta

Turunen

et al. 2017

Soil and Tillage Research

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Subsurface drain trenches are important pathways for water movement from the field surface to subsurface drains in low permeability clayey soils. The hydrological effects of trenches installed with well conducting backfill material and gravel inlet patches are difficult to study with only experimental methods. Computational three-dimensional soil water models provide additional tools to assess spatial processes of such drainage system. The objective was to simulate water flow pathways with 3-D FLUSH model in drain spacing and trench depth scale with two model configurations: (1) the total pore space of soil was treated as a single continuous pore system and (2) the total pore space was divided into mobile soil matrix and macropore systems. Both model configurations were parametrised almost solely with field data without calibration. Data on soil hydraulic properties and drain discharge measurements were available from a clayey subsurface drained agricultural field in southern Finland. The effect of soil hydraulic variability on water flow pathways was assessed by generating computational grids in which the hydraulic properties were sampled randomly from five measured soil sets. Both model configurations were suitable to describe the recorded drain discharge, when model was parameterized in finer scale than drain spacing and the parameterization described highly conductive subdomains such as macropores in dual-permeability model or the trench in single pore system model. Models produced similar hourly discharge and water balance results with randomly sampled soil hydraulic properties. The results provide a new view on consequences of soil heterogeneity on subsurface drainage. The practical implication of the results from different drainage scenarios is that gravel trench appears to be important only in soils with a poorly conductive subsoil layers without direct macropore connections to subsurface drains. Solely drain discharge data was not sufficient to determine the differences in water flow pathways between the two model configurations and more output variables, such as groundwater level, should be taken into account in making assessments on the effects of different drainage practices on field drainage capacity.

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Section: Hourly and Cumulative Drain Dischargecontrasting

confidence: 84%

Section: Water Balance and Effect Of The Drain Trenchmentioning

confidence: 99%

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Simulating 3-D water flow in subsurface drain trenches and surrounding soils in a clayey field

Salo

Warsta

Turunen

et al. 2017

Soil and Tillage Research

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“…A large fraction of the subsurface drains were installed in the latter half of the 1900s (Saavalainen, 2001), and they are aging and losing efficiency (e.g. Nousiainen et al 2015). This is causing a growing need for improved or renewed drainage installations (Puustinen et al, 1994).…”

Section: Field Drainage Implementation and Maintenancementioning

confidence: 99%

“…The reasons behind the changes in drainage performance can be difficult to confirm (Nousiainen et al, 2015), as the changes can be due to multiple factors such as soil compaction (e.g. Rimidis and Dierickx, 2003) or pipe clogging (e.g.…”

Section: Factors Affecting the Performance And Efficiency Of Subsurfamentioning

confidence: 99%

Development and application of a solute transport model to describe field-scale nitrogen processes during autumn rains

Salo

Warsta

Turunen

et al. 2015

Acta Agriculturae Scandinavica, Section B — Soil & Plant Sc

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Laura Alakukku. Furthermore, I wish to thank Prof. Emer. Pertti Vakkilainen for his influence on field drainage research in Finland and the existence of the research projects in which I have been doing my thesis. I have been lucky to have had a bunch of co-workers with whom I have enjoyed many coffee breaks, lunches and after work activities. I want to thank the current and former people in Water Building: Tero,

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3D surface–subsurface modeling of a bromide tracer test in a macroporous tile‐drained field: Improvements and limitations

Boico

Therrien

Fleckenstein

et al. 2023

Soil Science Soc of Amer J

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The assessment and forecasting of nutrient loss by tile drains in agricultural areas often rely on physically based models that have adequate representations of macropores and tile drains. Macroporosity has been adequately represented in hydrological models using a dual continuum approach. However, its implementation in hydrological and solute transport models is limited to plot-scale or to one-and two-dimensional models due to the large number of parameters that are rarely available and the long computational times. The purpose of this study is to simulate a tracer test using a 3D coupled surface-subsurface model to improve the representation of the tracer concentration at the drainage discharge. A three-dimensional HydroGeoSphere model was developed and calibrated to simulate tile drainage discharge, Br mass discharge, and hydraulic heads from a Br tracer test in a densely tile-drained field. The conductivity of the drain was one of the most important parameters for drain discharge and solute transport simulations. The model accurately simulated drainage discharge and Br transport to tile drains. However, most of the Br peaks and the late-time Br mass in the drain outflow were underestimated. Our simulation results indicate that explicitly representing tile drains with seepage nodes allows for a physically based, yet computationally efficient representation of Br transport behavior surrounding tile drains at field scale. However, we cannot confirm that the single-porosity model with immobile zone is suitable for simulating the Br peaks at the drain outlet and the late-time Br mass. Improvements to the model include the implementation of heterogeneous soil layers and the inclusion of more measured data to reduce uncertainty during calibration.

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Analyzing subsurface drain network performance in an agricultural monitoring site with a three-dimensional hydrological model

Cited by 21 publications

References 40 publications

Simulating 3-D water flow in subsurface drain trenches and surrounding soils in a clayey field

Simulating 3-D water flow in subsurface drain trenches and surrounding soils in a clayey field

Development and application of a solute transport model to describe field-scale nitrogen processes during autumn rains

3D surface–subsurface modeling of a bromide tracer test in a macroporous tile‐drained field: Improvements and limitations

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