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Technical note: Disentangling the groundwater response to Earth and atmospheric tides to improve subsurface characterisation

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 hydro-mechanical properties. We develop a generalised frequency domain approach to disentangle the impacts of Earth and atmospheric tides on groundwater level responses. By considering the complex harmonic properties of the signal, we improve upon a previous method for quantifying barometric efficiency (BE), while simultaneously assessing system confinement and estimating hydraulic conductivity and specific storage. We demonstrate and validate this novel approach using an example barometric and groundwater pressure record with strong Earth tide influences. Our method enables improved and rapid assessment of subsurface processes and properties using standard pressure measurements.

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Verlagsausgabe §
DOI: 10.5445/IR/1000127979
Veröffentlicht am 23.12.2020
DOI: 10.5194/hess-24-6033-2020
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Angewandte Geowissenschaften (AGW)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 23.12.2020
Sprache Englisch
Identifikator ISSN: 1607-7938
KITopen-ID: 1000127979
Erschienen in Hydrology and earth system sciences
Verlag Copernicus Publications
Band 24
Heft 12
Seiten 6033–6046
Projektinformation SubTideTools (EU, H2020, 835852)
Vorab online veröffentlicht am 22.12.2020
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