Skip to Main content Skip to Navigation
Journal articles

Inferring field-scale properties of a fractured aquifer from ground surface deformation during a well test

Abstract : Fractured aquifers which bear valuable water resources are often difficult to characterize with classical hydrogeological tools due to their intrinsic heterogeneities. Here, we implement ground surface deformation tools (tiltmetry and optical leveling) to monitor groundwater pressure changes induced by a classical hydraulic test at the Ploemeur observatory. By jointly analyzing complementary time constraining data (tilt) and spatially constraining data (vertical displacement), our results strongly suggest that the use of these surface deformation observations allows for estimating storativity and structural properties (dip, root depth, lateral extension) of a large hydraulically active fracture, in good agreement with previous studies. Hence, we demonstrate that ground surface deformation is a useful addition to traditional hydrogeological techniques and opens possibilities for characterizing important large-scale properties of fractured aquifers with short-term well tests as a controlled forcing.
Document type :
Journal articles
Complete list of metadatas

Cited literature [33 references]  Display  Hide  Download

https://hal-insu.archives-ouvertes.fr/insu-01247513
Contributor : Isabelle Dubigeon <>
Submitted on : Friday, February 5, 2016 - 9:09:41 AM
Last modification on : Friday, March 27, 2020 - 2:10:01 AM
Long-term archiving on: : Saturday, November 12, 2016 - 10:20:38 AM

File

Schuite-GRL-2015.pdf
Publisher files allowed on an open archive

Identifiers

Citation

Jonathan Schuite, Laurent Longuevergne, Olivier Bour, Frédéric Boudin, Stéphane Durand, et al.. Inferring field-scale properties of a fractured aquifer from ground surface deformation during a well test. Geophysical Research Letters, American Geophysical Union, 2015, 42 (24), pp.10696-10703 ⟨10.1002/2015GL066387⟩. ⟨insu-01247513⟩

Share

Metrics

Record views

553

Files downloads

759