Search Results - "Acworth, R. Ian"

Heat as a tracer to quantify water flow in near-surface sediments by Rau, Gabriel C., Andersen, Martin S., McCallum, Andrew M., Roshan, Hamid, Acworth, R. Ian

“…The dynamic distribution of thermal conditions present in saturated near-surface sediments have been widely utilised to quantify the flow of water. A rapidly…”
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Experimental investigation of the thermal dispersivity term and its significance in the heat transport equation for flow in sediments by Rau, Gabriel C., Andersen, Martin S., Acworth, R. Ian

“…A review of heat and solute transport in sediments demonstrates that the use of heat as a tracer has not been experimentally evaluated under the same…”
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Improved spatial delineation of streambed properties and water fluxes using distributed temperature sensing by Halloran, Landon J. S., Roshan, Hamid, Rau, Gabriel C., Andersen, Martin S., Acworth, R. Ian

“…A new method was developed for analysing and delineating streambed water fluxes, flow conditions and hydraulic properties using coiled fibre‐optic distributed…”
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Runoff and focused groundwater-recharge response to flooding rains in the arid zone of Australia by Acworth, R. Ian, Rau, Gabriel C., Cuthbert, Mark O., Leggett, Keith, Andersen, Martin S.

“…A groundwater recharge investigation in the arid zone of Australia is presented. The investigation used a wide range of hydrogeological techniques including…”
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Technical note: Disentangling the groundwater response to Earth and atmospheric tides to improve subsurface characterisation by Rau, Gabriel C, Cuthbert, Mark O, Acworth, R. Ian, Blum, Philipp

“…The groundwater response to Earth tides and atmospheric pressure changes can be used to understand subsurface processes and estimate hydraulic and…”
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An investigation of the spatial and temporal variability of the saline interface in a sandy aquifer subject to storm wave runup and rainfall recharge by Acworth, R. Ian, Andersen, Martin S., Dasey, Greg R.

“…Investigations at Hat Head in northern New South Wales, Australia, have shown that the depth and location of the saline interface changes significantly in…”
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River-aquifer interactions in a semi-arid environment stressed by groundwater abstraction by McCallum, Andrew M., Andersen, Martin S., Giambastiani, Beatrice M. S., Kelly, Bryce F. J., Ian Acworth, R.

“…Rivers and aquifers are, in many cases, a connected resource and as such the interactions between them need to be understood and quantified for the resource to…”
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Vertical groundwater storage properties and changes in confinement determined using hydraulic head response to atmospheric tides by Acworth, R. Ian, Rau, Gabriel C., Halloran, Landon J. S., Timms, Wendy A.

“…Accurate determination of groundwater state of confinement and compressible storage properties at vertical resolution over depth is notoriously difficult. We…”
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Characterising the dynamics of surface water-groundwater interactions in intermittent and ephemeral streams using streambed thermal signatures by Rau, Gabriel C., Halloran, Landon J.S., Cuthbert, Mark O., Andersen, Martin S., Acworth, R. Ian, Tellam, John H.

“…•Amplitude ratios of the daily temperature component at two different depths in the streambed can be used to distinguish dry from saturated…”
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Use of heat as tracer to quantify vertical streambed flow in a two-dimensional flow field by Roshan, Hamid, Rau, Gabriel C., Andersen, Martin S., Acworth, Ian R.

“…Analytical solutions to the heat transport equation in porous media have been developed in the past to estimate surface water‐groundwater interactions. These…”
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Future-proofing hydrogeology by revising groundwater monitoring practice by Rau, Gabriel C., Cuthbert, Mark O., Post, Vincent E. A., Schweizer, Daniel, Acworth, R. Ian, Andersen, Martin S., Blum, Philipp, Carrara, Elisabetta, Rasmussen, Todd C., Ge, Shemin

“…Groundwater is an important global resource and its sustainable use faces major challenges. New methods and advances in computational science could lead to…”
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An objective frequency domain method for quantifying confined aquifer compressible storage using Earth and atmospheric tides by Acworth, R. Ian, Halloran, Landon J. S., Rau, Gabriel C., Cuthbert, Mark O., Bernardi, Tony L.

“…The groundwater hydraulic head response to the worldwide and ubiquitous atmospheric tide at 2 cycles per day (cpd) is a direct function of confined aquifer…”
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Field Measurements of Beachface Salinity Structure using Cross-Borehole Resistivity Imaging by Turner, Ian L., Acworth, R. Ian

“…The dynamics of groundwater within beaches has implications for sediment transport in the swash zone and mass transport across the land-ocean boundary…”
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Experimental investigation of the thermal time-series method for surface water-groundwater interactions by Rau, Gabriel C., Andersen, Martin S., Acworth, R. Ian

“…Diel temperature fluctuations have been used to quantify vertical water flow through saturated sediments with 1‐D analytical heat models. The underlying…”
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Long-term spatio-temporal precipitation variability in arid-zone Australia and implications for groundwater recharge by Acworth, R. Ian, Rau, Gabriel C., Cuthbert, Mark O., Jensen, Evan, Leggett, Keith

“…Quantifying dryland groundwater recharge as a function of climate variability is becoming increasingly important in the face of a globally depleted resource,…”
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River-aquifer interactions in a semiarid environment investigated using point and reach measurements by McCallum, Andrew M., Andersen, Martin S., Rau, Gabriel C., Larsen, Joshua R., Acworth, R. Ian

“…A critical hydrological process is the interaction between rivers and aquifers. However, accurately determining this interaction from one method alone is…”
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The Influence of Syndepositional Macropores on the Hydraulic Integrity of Thick Alluvial Clay Aquitards by Timms, Wendy A., Acworth, R. Ian, Crane, Richard A., Arns, Christoph H., Arns, Ji‐Youn, McGeeney, Dayna E., Rau, Gabriel C., Cuthbert, Mark O.

“…Clay‐rich deposits are commonly assumed to be aquitards which act as natural hydraulic barriers due to their low hydraulic connectivity. Postdepositional…”
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Drip water isotopes in semi-arid karst: Implications for speleothem paleoclimatology by Cuthbert, Mark O., Baker, Andy, Jex, Catherine N., Graham, Peter W., Treble, Pauline C., Andersen, Martin S., Ian Acworth, R.

“…We report the results of the first multi-year monitoring and modelling study of the isotopic composition of drip waters in a semi-arid karst terrane. High…”
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A New Method for Estimating Recharge to Unconfined Aquifers Using Differential River Gauging by McCallum, Andrew M., Andersen, Martin S., Acworth, R. Ian

“…In semiarid and arid environments, leakage from rivers is a major source of recharge to underlying unconfined aquifers. Differential river gauging is widely…”
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Quantifying Compressible Groundwater Storage by Combining Cross‐Hole Seismic Surveys and Head Response to Atmospheric Tides by Rau, Gabriel C., Acworth, R. Ian, Halloran, Landon J. S., Timms, Wendy A., Cuthbert, Mark O.

“…Groundwater specific storage varies by orders of magnitude, is difficult to quantify, and prone to significant uncertainty. Estimating specific storage using…”
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