TR32-Database: Database of Transregio 32

[671] - Determination of the distribution of air and water in porous media by electrical impedance tomography and magneto-electrical imaging

All available metadata of the dataset are listed below. Some features are available, e.g. download of dataset or additional description file.

Features
Citation
Haegel, F., Zimmermann, E., Esser, O., Breede, K., Huisman, J. A., Glaas, W., Berwix, J., Vereecken, H., 2011. Determination of the distribution of air and water in porous media by electrical impedance tomography and magneto-electrical imaging. Nuclear Engineering and Design, 241, 1959 - 1969. DOI: 10.1016/j.nucengdes.2010.09.011.
Identification
Title(s):Main Title: Determination of the distribution of air and water in porous media by electrical impedance tomography and magneto-electrical imaging
Description(s):Abstract: Monitoring the distribution of water content is essential for understanding hydrological processes in the lithosphere and the pedosphere. The movement of water in unsaturated rock formations and in the vadose zone is influenced by different processes (mainly infiltration, evaporation, percolation and capillary flow) which may be rate determining depending on the actual conditions. The interdependence of these processes also strongly influences the transport and distribution of solutes in the pore space. In order to gain a better understanding of the movement and distribution of water in unsaturated media, systematic investigations with non-invasive or minimal invasive methods appear to be most suitable. Studies on the distribution of electrical conductivity can improve risk analysis concerning waste disposals in general and nuclear waste repositories in particular. Induced polarization and magnetic flux density determined with two highly sensitive accessories yield additional information and may allow for better discrimination of coupled flow processes. Electrical impedance tomography (EIT) with 20 current injection and 48 voltage electrodes was used here to monitor the evaporation of tap water from a container filled with sand under laboratory conditions at 20 ◦C. The results are compared with data obtained by determining spectral induced polarization (SIP) of sand during desaturation in a multi-step outflow equipment. Infiltration processes and evaporation from sand saturated with 0.01M CaCl2 were determined by magneto-electrical resistivity imaging technique (MERIT). The results were obtained from a long-term experiment under controlled conditions.
Identifier(s):DOI: 10.1016/j.nucengdes.2010.09.011
Responsible Party
Creator(s):Author: Franz-Hubert Haegel
Author: Egon Zimmermann
Author: Odilia Esser
Author: Katrin Breede
Author: Johan A. Huisman
Author: Walter Glaas
Author: Joachim Berwix
Author: Harry Vereecken
Publisher:Elsevier
Topic
TR32 Topic:Other
Subject(s):CRC/TR32 Keywords: Water Content, Hydrology
File Details
File Name:2011_Haegel_NED.pdf
Data Type:Text
Size(s):11 Pages
File Size:1194 kB (1.166 MB)
Date(s):Date Accepted: 2010-08-10
Mime Type:application/pdf
Data Format:PDF
Language:English
Status:Completed
Constraints
Download Permission:OnlyTR32
General Access and Use Conditions:For internal use only
Access Limitations:For internal use only
Licence:TR32DB Data policy agreement
Geographic
North:-no map data
East:-
South:-
West:-
Measurement Region:Other
Measurement Location:--Other--
Specific Informations - Publication
Status:Published
Review:PeerReview
Year:2011
Type:Article
Article Type:Journal
Source:Nuclear Engineering and Design
Volume:241
Number Of Pages:11
Page Range:1959 - 1969
Metadata Details
Metadata Creator:Katrin Breede
Metadata Created:2013-12-02
Metadata Last Updated:2013-12-02
Subproject:A3
Funding Phase:2
Metadata Language:English
Metadata Version:V40
Dataset Metrics
Page Visits:199
Metadata Downloads:0
Dataset Downloads:1
Dataset Activity
Features