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Inversion of hydraulic conductivity from Induced Polarisation, Part B: field examples from five countries

Martin, T. LU ; Pauw, P. S. ; Karoulis, M. ; Mendoza, A. LU orcid ; Günther, T. ; Meldgaard Madsen, L. ; Maurya, P. K. ; Doetsch, J. ; Rejkjär, S. LU and Dahlin, T. LU , et al. (2021) EAGE Near Surface Geoscience Conference & Exhibition 2021 2021.
Abstract
The knowledge about the hydraulic conductivity of the subsurface is crucial to know as it is a main parameter for groundwater flow characterization within an aquifer. The geophysical method time-domain Induced Polarisation has been shown to be useful for estimating the hydraulic conductivity. By using a new inversion approach, where we directly invert for hydraulic properties as inversion parameters, the estimation of the hydraulic conductivity can be improved. We have measured at several test sites across five European countries, all characterized by unconsolidated sediments, but with differences in terms of the water electrical conductivity. In particular, at the Zeeland site in the Netherlands, a strong gradient in the water electrical... (More)
The knowledge about the hydraulic conductivity of the subsurface is crucial to know as it is a main parameter for groundwater flow characterization within an aquifer. The geophysical method time-domain Induced Polarisation has been shown to be useful for estimating the hydraulic conductivity. By using a new inversion approach, where we directly invert for hydraulic properties as inversion parameters, the estimation of the hydraulic conductivity can be improved. We have measured at several test sites across five European countries, all characterized by unconsolidated sediments, but with differences in terms of the water electrical conductivity. In particular, at the Zeeland site in the Netherlands, a strong gradient in the water electrical conductivity is present since a freshwater lens is overlaying the sea water. A very good agreement between the hydraulic conductivity values from the inversion with the present hydraulic model can be observed, despite of the high water electrical conductivity, which makes it challenging to identify the clay layers at the site. Similar results were achieved for the other tests sites. Therewith, this new methodology might open the way for reliable, cost-effective geophysical estimation of hydraulic conductivity in the field. (Less)
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organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
Conference Proceedings, NSG2021 1st Conference on Hydrogeophysics
volume
2021
pages
5 pages
publisher
European Association of Geoscientists and Engineers
conference name
EAGE Near Surface Geoscience Conference & Exhibition 2021
conference location
Bordeaux, France
conference dates
2021-08-29 - 2021-09-02
external identifiers
  • scopus:85125167270
DOI
10.3997/2214-4609.202120093
project
3D-kartläggning av grundvattenmagasin med resistivitet-IP
language
English
LU publication?
yes
id
388100a7-ac76-4b5e-8fd5-60d7dc8a0d60
date added to LUP
2021-09-14 16:55:20
date last changed
2022-12-05 14:35:19
@inproceedings{388100a7-ac76-4b5e-8fd5-60d7dc8a0d60,
  abstract     = {{The knowledge about the hydraulic conductivity of the subsurface is crucial to know as it is a main parameter for groundwater flow characterization within an aquifer. The geophysical method time-domain Induced Polarisation has been shown to be useful for estimating the hydraulic conductivity. By using a new inversion approach, where we directly invert for hydraulic properties as inversion parameters, the estimation of the hydraulic conductivity can be improved. We have measured at several test sites across five European countries, all characterized by unconsolidated sediments, but with differences in terms of the water electrical conductivity. In particular, at the Zeeland site in the Netherlands, a strong gradient in the water electrical conductivity is present since a freshwater lens is overlaying the sea water. A very good agreement between the hydraulic conductivity values from the inversion with the present hydraulic model can be observed, despite of the high water electrical conductivity, which makes it challenging to identify the clay layers at the site. Similar results were achieved for the other tests sites. Therewith, this new methodology might open the way for reliable, cost-effective geophysical estimation of hydraulic conductivity in the field.}},
  author       = {{Martin, T. and Pauw, P. S. and Karoulis, M. and Mendoza, A. and Günther, T. and Meldgaard Madsen, L. and Maurya, P. K. and Doetsch, J. and Rejkjär, S. and Dahlin, T. and Fiandaca, G.}},
  booktitle    = {{Conference Proceedings, NSG2021 1st Conference on Hydrogeophysics}},
  language     = {{eng}},
  month        = {{08}},
  publisher    = {{European Association of Geoscientists and Engineers}},
  title        = {{Inversion of hydraulic conductivity from Induced Polarisation, Part B: field examples from five countries}},
  url          = {{http://dx.doi.org/10.3997/2214-4609.202120093}},
  doi          = {{10.3997/2214-4609.202120093}},
  volume       = {{2021}},
  year         = {{2021}},
}