Journal articles
Combining fiber optic DTS, cross-hole ERT and time-lapse induction logging to characterize and monitor a coastal aquifer
A. Folch
1, *
L. del Val
1
Linda Luquot
2
L. Martínez-Pérez
3
F. Bellmunt
4
H. Le Lay
5
Valenti Rodellas
6
N. Ferrer
1
A. Palacios
3
S. Fernandez
3
M.A. Marazuela
3
M. Diego-Feliu
7
M. Pool
3
T. Goyetche
3
J. Ledo
8
P. Pezard
2
Olivier Bour
9
P. Queralt
4
A. Marcuello
4
J. Garcia-Orellana
7
M.W. Saaltink
1
E. Vazquez-Suñe
3
J. Carrera
3
*
Corresponding author
A. Folch 1
Correspondent author
L. del Val 1
Author
Linda Luquot 2
Author IdHAL : linda-luquot ORCID : https://orcid.org/0000-0002-4389-3019
L. Martínez-Pérez 3
Author
F. Bellmunt 4
Author
H. Le Lay 5
Author
Valenti Rodellas 6
Author IdHAL : valenti-rodellas ORCID : https://orcid.org/0000-0002-5896-9987
N. Ferrer 1
Author
1
UPC - Universitat Politècnica de Catalunya [Barcelona] (C./Jordi Girona, 1-3, 08034 Barcelona - Spain)
2
Géosciences Montpellier (Place Eugène Bataillon - 34095 Montpellier cedex 5 - France)
- CNRS - Centre National de la Recherche Scientifique : UMR5243 (France)
- UA - Université des Antilles (Université des Antilles | Fouillole - BP 250 - 97157 Pointe-à-Pitre - France)
- UM - Université de Montpellier (163 rue Auguste Broussonnet - 34090 Montpellier - France)
- INSU - CNRS - Institut national des sciences de l'Univers : UMR5243 (INSU-CNRS 3 rue Michel-Ange, 75794 Paris Cedex 16 - France)
3
IDAEA - Institute of Environmental Assessment and Water Research (C/ Jordi Girona 18-26 - 08034 Barcelona - Spain)
- CSIC - Consejo Superior de Investigaciones Científicas [Madrid] (Spanish National Research Council Serrano 117, 28006 Madrid - Spain)
4
Departament de Dinàmica de la Terra i de l’Oceà-Institut de recerca Geomodels (Spain)
- UB - Universitat de Barcelona (Gran Via de les Corts Catalanes, 585, 08007 Barcelona - Spain)
5
SAS - Sol Agro et hydrosystème Spatialisation (UMR 1069, Sol Agro et Hydrosystème Spatialisation, Batiment 13, INSTITUT AGRO Agrocampus Ouest, 65 rue de Saint Brieuc CS 84215 35042 Rennes CEDEX - France)
- INRAE - Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement : UMR1069 (France)
- INSTITUT AGRO Agrocampus Ouest (65 rue de Saint Brieuc CS 84215 35042 Rennes CEDEX - France)
6
ICTA - Institut de Ciencia i Tecnologia Ambientals (08193 Bellaterra (Cerdanyola del Vallès). Barcelona, Spain - Spain)
- UAB - Universitat Autònoma de Barcelona (UAB Campus 08193 Bellaterra Barcelona - Spain)
7
UAB - Universitat Autònoma de Barcelona (UAB Campus 08193 Bellaterra Barcelona - Spain)
8
Departament de Geodinàmica i Geofísica, Universitat de Barcelona (Spain)
- UB - Universitat de Barcelona (Gran Via de les Corts Catalanes, 585, 08007 Barcelona - Spain)
9
GR - Géosciences Rennes (Bâtiment 15 - Université de Rennes 1 - Campus de Beaulieu -263 Av du général Leclerc- CS 74205 - 35042 Rennes Cedex - France - France)
- CNRS - Centre National de la Recherche Scientifique : UMR6118 (France)
- OSUR - Observatoire des Sciences de l'Univers de Rennes (263 avenue du Général Leclerc - 35042 Rennes cedex - France)
- INRAE - Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (France)
- CNRS - Centre National de la Recherche Scientifique : UAR3343 / UMS3343 (France)
- UR2 - Université de Rennes 2 (Place du recteur Henri Le Moal - CS 24307 - 35043 Rennes cedex - France)
- UNIV-RENNES - Université de Rennes (France)
- UR1 - Université de Rennes 1 (2 rue du Thabor - CS 46510 - 35065 Rennes cedex - France)
- UNIV-RENNES - Université de Rennes (France)
- INSU - CNRS - Institut national des sciences de l'Univers (INSU-CNRS 3 rue Michel-Ange, 75794 Paris Cedex 16 - France)
- UR1 - Université de Rennes 1 (2 rue du Thabor - CS 46510 - 35065 Rennes cedex - France)
- UNIV-RENNES - Université de Rennes (France)
Abstract : The characterization of saline water intrusion (SWI) and its hydrodynamics is a key issue to understand submarine groundwater discharge (SGD) and manage groundwater resources in coastal areas. To test and compare different methods of characterization and monitoring, a new experimental site has been constructed in a coastal alluvial aquifer north of Barcelona city (Catalonia, Spain). The site is located between 30 and 90 m from the seashore and comprises 16 shallow piezometers organized in nests of three with depths ranging between 15 and 25 m and 4 solitary piezometers. The objective of this paper is to combine different recently developed monitoring techniques to evaluate temporal variations in the aquifer hydrodynamics of the site at different spatial scales before and after the dry season of 2015. At the site scale, fibre optic distributed temperature sensing (FO-DTS), for the first time applied to study SWI, and cross-hole electrical resistivity tomography (CHERT) has been applied. At the meter/borehole scale, electrical conductivity of the formation has been applied not only in a repeated manner (“time lapse”), but also for the first time at relatively high frequency (1 sample every 10 min). CHERT has provided a better characterization of the seawater intrusion than electrical conductivity data obtained from piezometers. The combination of techniques has allowed improving the understanding of the system by: 1) characterizing the extent and shape of SWI; 2) differentiating two different dynamics in the aquifer; and 3) identifying preferential flow paths over different time and spatial intervals. Future challenges and the application of these techniques in other areas are also discussed.
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Journal articles
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https://hal-insu.archives-ouvertes.fr/insu-02571753
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Submitted on : Wednesday, May 13, 2020 - 10:16:40 AM
Last modification on : Friday, May 20, 2022 - 9:04:54 AM
Contributor : Isabelle Dubigeon Connect in order to contact the contributor
Submitted on : Wednesday, May 13, 2020 - 10:16:40 AM
Last modification on : Friday, May 20, 2022 - 9:04:54 AM
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Identifiers
- HAL Id : insu-02571753, version 1
- DOI : 10.1016/j.jhydrol.2020.125050
- WOS : 000568826300036
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INSU | UNIV-AG | UNIV-RENNES1 | OSUR | UNIV-MONTPELLIER | GM | GR | CNRS | GR-DIMENV | INRAE | B3ESTE | UNIV-RENNES | UR1-ENV | UMR-SAS | ANR | UNAM | UR2-HB | UNIV-RENNES2
Citation
A. Folch, L. del Val, Linda Luquot, L. Martínez-Pérez, F. Bellmunt, et al.. Combining fiber optic DTS, cross-hole ERT and time-lapse induction logging to characterize and monitor a coastal aquifer. Journal of Hydrology, Elsevier, 2020, 588, pp.125050. ⟨10.1016/j.jhydrol.2020.125050⟩. ⟨insu-02571753⟩
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