Technical note: Novel analytical solution for groundwater response to atmospheric tides
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Published:2023-09-28
Issue:18
Volume:27
Page:3447-3462
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ISSN:1607-7938
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Container-title:Hydrology and Earth System Sciences
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language:en
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Short-container-title:Hydrol. Earth Syst. Sci.
Author:
Bastias Espejo Jose M.ORCID, Turnadge Chris, Crosbie Russell S., Blum PhilippORCID, Rau Gabriel C.ORCID
Abstract
Abstract. Subsurface hydraulic and geomechanical properties can be estimated from well water level responses to Earth and atmospheric tides. However, the limited availability of analytical solutions restricts the applicability of this approach to realistic field conditions. We present a new and rigorous analytical solution for modeling flow between a subsurface–well system caused by harmonic atmospheric loading. We integrate this into a comprehensive workflow that also estimates subsurface properties using a well-established Earth tide method. When applied to groundwater monitoring datasets obtained from two boreholes screened in a sand aquifer in the Mary–Wildman river region (Northern Territory, Australia), estimated hydraulic conductivity and specific storage agree. Results also indicate that small vertical leakage occurs in the vicinity of both boreholes. Furthermore, the estimated geomechanical properties were within the values reported in the literature for similar lithological settings. Our new solution extends the capabilities of existing approaches, and our results demonstrate that analyzing the groundwater response to natural tidal forces is a low-cost and readily available solution for unconsolidated, hydraulically confined, and undrained subsurface conditions. This approach can support well-established characterization methods, increasing the amount of subsurface information.
Funder
Deutsche Forschungsgemeinschaft
Publisher
Copernicus GmbH
Subject
General Earth and Planetary Sciences,General Engineering,General Environmental Science
Reference55 articles.
1. Acworth, R. I., Halloran, L. J., Rau, G. C., Cuthbert, M. O., and Bernardi,
T. L.: An objective frequency domain method for quantifying confined aquifer
compressible storage using Earth and atmospheric tides, Geophys. Res. Lett., 43, 11–671, 2016. a 2. Acworth, R. I., Rau, G. C., Halloran, L. J., and Timms, W. A.: Vertical
groundwater storage properties and changes in confinement determined using
hydraulic head response to atmospheric tides, Water Resour. Res., 53,
2983–2997, 2017. a 3. Allègre, V., Brodsky, E. E., Xue, L., Nale, S. M., Parker, B. L., and
Cherry, J. A.: Using earth-tide induced water pressure changes to measure in
situ permeability: A comparison with long-term pumping tests, Water Resour. Res., 52, 3113–3126, https://doi.org/10.1002/2015WR017346, 2016. a, b 4. Arditty, P. C., Ramey, H. J., and Nur, A. M.: Response of a closed
well-reservoir system to stress induced by earth tides, in: Spe annual fall
technical conference and exhibition, OnePetro, https://doi.org/10.2118/7484-MS, 1978. a 5. Aster, R. C., Borchers, B., and Thurber, C. H.: Parameter estimation and
inverse problems, Elsevier, https://doi.org/10.1016/C2009-0-61134-X, 2018. a
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