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Project A3


continued as B6 in Phase III

Inverse modelling of soil hydraulic property patterns from non-invasive electrical measurements

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Research Area:
Hydrogeophysics


project a3

Flow and transport properties of soils are decisively dependent on the structural and textural composition of the soil. A non-invasive method to obtain soil hydraulic property patterns would be highly useful, in particular to provide parameter input to subsurface flow models. The aim of this project is to understand, interpret, and validate the spatial distribution of spectral electrical properties obtained with electrical impedance tomography (EIT) in terms of soil hydraulic property patterns. Laboratory studies have already successfully related spectral electrical and hydraulic properties. Currently, we are validating these results using field infiltration experiments and newly developed broadband field EIT equipment.

Soil structural and textural heterogeneity can lead to significant variation of hydraulic properties in vertical and lateral direction. This hydraulic anisotropy may lead to electrical anisotropy. Therefore, we hypothesize that electrical anisotropy may provide additional information to characterize hydraulic systems. In particular, we are using laboratory experiments to analyze how small-scale structural heterogeneity and preferential flow processes affect electrical anisotropy. To allow imaging of electrical anisotropy, we are also developing forward and inverse modeling tools that incorporate anisotropic electrical conductivity. First field demonstrations have shown that many soils are electrically anisotropic, and we are in the process of interpreting this in a hydrological context.


Cooperation partner:
n/a

6 Member(s):

J. A. (Sander) Huisman

Prof. Dr.
J. A. (Sander) Huisman
Principal Investigator
in A3, B6

FZ Jülich
Institute of Bio- & Geosciences
Agrosphere (IBG-3)

52425 Jülich
Germany

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+49 (0)2461 61 8607
+49 (0)2461 61 2518
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s.huisman@fz-juelich.de

 

 

Andreas Kemna

Prof. Dr.
Andreas Kemna
Principal Investigator
in A3, B6

University of Bonn
Geophysics
Steinmann Institute

Meckenheimer Allee 176
53115 Bonn
Germany

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+49 (0)228 73 3060
+49 (0)228 73 60631
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kemna@geo.uni-bonn.de

 

 

Sadam Al-Hazaimay

Sadam Al-Hazaimay
Ph.D. Student
in A3

FZ Jülich
Institute of Bio and Geosciences Agrosphere
Agrosphere (IBG-3)

Wilhelm-Johnen-Straße
52428 Jülich
Germany

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+49 (0)2461 61 3665
+49 (0)2461 61 2518
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s.al-hazaimay@fz-juelich.de

 

 

Matthias Kelter

Diploma Physics
Matthias Kelter
Ph.D. Student
in A3

FZ Jülich
Institute of Bio and Geosciences Agrosphere
Agrosphere (IBG-3)

52425 Jülich
Germany

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+49 (0)2461 61 6271

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m.kelter@fz-juelich.de

 

 

Johannes Kenkel

Diploma
Johannes Kenkel
Ph.D. Student
in A3

University of Bonn
Geodynamics / Geophysicst
Steinmann Institute

Meckenheimer Allee 176
53115 Bonn
Germany

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+49 (0)228 73 60651

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kenkel@geo.uni-bonn.de

 

 

Lisa Takacs

Lisa Takacs
Administrative Office
in A3

University of Bonn
Geodynamics / Geophysics
Steinmann Institute

Meckenheimer Allee 176
51335 Bonn
Germany

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+49 (0)228 73-7429

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takacs@geo.uni-bonn.de

 

 


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