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David Andrew Barry

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Related publications (225)

Comment on “Recent advances on solving the three-parameter infiltration equation” by Prabhata K. Swamee, Pushpa N. Rathie, Luan Carlos de S.M. Ozelim and André L.B. Cavalcante, Journal of Hydrology 509 (2014) 188-192

A recent approximation to the three-parameter infiltration was compared with an existing approximation. The new approximation has a minimum relative error that is two orders of magnitude greater than the maximum relative error of the existing approximation ...

Elsevier Science Bv2014

Use of silicate minerals for long-term pH control during reductive dechlorination of high tetrachloroethene concentrations in continuous flow-through columns

Christof Holliger, Julien Maillard, Emmanuelle Rohrbach, David Andrew Barry, Alessandro Brovelli, Elsa Marina Lacroix

The long-term buffering potential of three silicate minerals (diopside, fayalite and forsterite) present as fine particles in porous quartz sand medium was evaluated in flow-through column experiments over a period of 6.5 months. The columns were operated ...

Elsevier2014

Non-contact assessment of COD and turbidity concentrations in water using diffuse reflectance UV-Vis spectroscopy

Luca Rossi, David Andrew Barry, Oliver Akermann, Jon Skirnir Agustsson

Water contamination is an important environmental concern underlining the need for reliable real-time information on contaminant concentrations in natural waters. Here, a new non-contact UV-Vis spectroscopic approach for monitoring contaminants in water, a ...

Royal Soc Chemistry2014

Morphological, hydrological, biogeochemical and ecological changes and challenges in river restoration – The Thur River case study

Philipp Schneider, Edward Mitchell, David Andrew Barry, Paolo Perona, Juliane Hollender

River restoration can enhance river dynamics, environmental heterogeneity and biodiversity, but the underlying processes governing the dynamic changes need to be understood to ensure that restoration projects meet their goals, and adverse effects are preve ...

European Geosciences Union2014

Analytical approximation for the recession of a sloping aquifer

Marc Parlange, David Andrew Barry

An approximation is obtained for the recession of a sloping aquifer. The analytical approximation can provide a useful tool to analyze data and obtain physical properties of the aquifer. In contrast to the case of a horizontal aquifer, when plotting the ti ...

American Geophysical Union2014

Tidal influence on soil conditions in an intertidal creek-marsh system

David Andrew Barry

To understand better how tides affect the soil conditions of salt marshes, pore-water flow in a modeled 3-D creek-marsh system was simulated under the influence of both monochromatic and spring-neap tides. In analyzing the simulation results, we examined s ...

American Geophysical Union2013

Deployment of a dynamic penetrometer from manned submersibles for fine-scale geomorphology studies

Ulrich Lemmin, David Andrew Barry, Nicolas Le Dantec

Dynamic penetrometers reveal information about seafloor strength, stratification, stability, and sediment remobilization. However, positioning is often limited to a range of meters making it difficult to target small-scale geomorphologic features. Deployme ...

Association for the Sciences of Limnology and Oceanography (ASLO)2013

Modelling of groundwater-vegetation interactions in a tidal marsh

David Andrew Barry

Wetting and drying due to tidal fluctuations affect soil conditions and hence plant growth in tidal marshes. Here, a coupled one-dimensional model was developed to simulate interacting groundwater flow and plant growth in these wetlands. The simulation res ...

Elsevier2013

Seawater intrusion processes, investigation and management: Recent advances and future challenges

David Andrew Barry

Seawater intrusion (SI) is a global issue, exacerbated by increasing demands for freshwater in coastal zones and predisposed to the influences of rising sea levels and changing climates. This review presents the state of knowledge in SI research, compares ...

Elsevier2013

Field application of a rapid spectrophotometric method for determination of persulfate in soil

David Andrew Barry

Remediation of hydrocarbon contaminated soils can be performed both in situ and ex situ using chemical oxidants such as sodium persulfate. Standard methods for quantifying persulfate require either centrifugation or prolonged settling times. An optimized s ...

Public Library of Science2013

Solute transport in nearly saturated porous media under landfill clay liners: A finite deformation approach

David Andrew Barry

For solute transport in a deformable clay liner, the importance of consolidation in the presence of sorption and consolidation-induced advection are well known. Here a one-dimensional coupled consolidation and solute transport model for a partially saturat ...

Elsevier Science Bv2013

Influence of treatment conditions on the oxidation of micropollutants by Trametes versicolor laccase

Luca Rossi, Christof Holliger, Julien Maillard, Jonas Margot, David Andrew Barry

Many organic compounds present at low concentrations in municipal wastewater, such as various pharmaceuticals and biocides, are recalcitrant in conventional wastewater treatment plants (WWTPs). To improve their biodegradation, oxidoreductase enzymes such a ...

Elsevier2013

Sediment contamination assessment in urban areas based on total suspended solids

Nathalie Chèvre Rossi, Luca Rossi, Romuald Curdy, Jonas Margot, David Andrew Barry

Sediment represents an important compartment in surface waters. It constitutes a habitat or spawning site for many organisms and is an essential trophic resource for higher level organisms. It can be impacted by anthropogenic activities, particularly throu ...

Elsevier2013

Transport of variable-density solute plumes in beach aquifers in response to oceanic forcing

David Andrew Barry, Alessandro Brovelli, Clare Robinson, Roham Bakhtyar

A comprehensive numerical study was undertaken to investigate transport of a variable-density, conservative solute plume in an unconfined coastal aquifer subject to high and low frequency oceanic forcing. The model combined variable-density saturated flow ...

Elsevier2013

Temporal dynamics of antibiotics in wastewater treatment plant influent

Luca Rossi, David Andrew Barry, Htet Kyi Wynn, Sylvain Coutu, Vera Wyrsch

A yearlong field experimental campaign was conducted to reveal time scales over which antibiotic fluxes vary in the influent of a wastewater treatment plant (WTP). In particular, sampling was carried out to ascertain the amplitudes of monthly, daily and ho ...

Elsevier2013

Experiments and numerical modeling of baffle configuration effects on the performance of sedimentation tanks

David Andrew Barry, Roham Bakhtyar, Amir Mehdi Razmi

The hydraulic efficiency of sedimentation basins is reduced by short-circuiting, circulation zones and bottom particle-laden jets. Baffles are used to improve sediment tank performance. In this study, laboratory experiments were used to examine the hydrody ...

National Research Council Canada2013

Enhancement of micropollutant degradation at the outlet of small wastewater treatment plants

Luca Rossi, Jonas Margot, Pierre Claude Jean Queloz, David Andrew Barry, Alessandro Brovelli

The aim of this work was to evaluate low-cost and easy-to-operate engineering solutions that can be added as a polishing step to small wastewater treatment plants to reduce the micropollutant load to water bodies. The proposed design combines a sand filter ...

Public Library of Science2013

Effect of antecedent conditions and fixed rock fragment coverage on soil erosion dynamics through multiple rainfall events

David Andrew Barry, Alessandro Brovelli, Seifeddine Jomaa

The effect of antecedent conditions and specific rock fragment coverage on precipitation-driven soil erosion dynamics through multiple rainfall events was investigated using a pair of 6-m × 1-m flumes with 2.2% slope. Four sequential experiments – denoted ...

Elsevier Science Bv2013

Capillary effect on watertable fluctuations in unconfined aquifers

David Andrew Barry

Parlange and Brutsaert [1987] derived a modified Boussinesq equation to account for the capillary effect on watertable dynamics in unconfined aquifers. Barry et al. [1996] solved this equation subject to a periodic boundary condition. Their solution shows ...

American Geophysical Union2013

Porous media pressure distribution in centrifugal fields

David Andrew Barry

The simplest use of centrifuges to measure soil properties relies on steady state conditions. Analytical solutions, especially if they are simple, make interpretation of data more direct and transparent. Previous approximations are simplified and have a gr ...

American Geophysical Union2013

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