TR32-Database: Database of Transregio 32

[1664] - Evaluation of a novel correction procedure to remove electrode impedance effects from broadband SIP measurements

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Features
Citation
Huisman, J. A., Zimmermann, E., Esser, O., Haegel, F., Treichel, A., Vereecken, H., 2016. Evaluation of a novel correction procedure to remove electrode impedance effects from broadband SIP measurements. Journal of Applied Geophysics, 135, 466 - 473. DOI: 10.1016/j.jappgeo.2015.11.008.
Identification
Title(s):Main Title: Evaluation of a novel correction procedure to remove electrode impedance effects from broadband SIP measurements
Description(s):Abstract: Broadband spectral induced polarization (SIP)measurements of the complex electrical resistivity can be affected by the contact impedance of the potential electrodes above 100 Hz. In this study, we present a correction procedure to remove electrode impedance effects from SIP measurements to improve the accuracy of broadband complex electrical resistivity measurements. The first step in this correction procedure is to estimate the electrode impedance using a measurement with reversed current and potential electrodes. In a second step, this estimated electrode impedance is used to correct SIP measurements based on a simplified electrical model of the SIP measurement system. We evaluated this new correction procedure using SIP measurements on water because of the well-defined dielectric properties. It was found that the difference between the corrected and expected phase of the complex electrical resistivity of water was below 0.1 mrad at 1 kHz for a wide range of electrode impedances. In addition, SIP measurements on a saturated unconsolidated sediment sample with two types of potential electrodes showed that the measured phase of the electrical resistivity was very similar (difference ~0.2 mrad) up to a frequency of 10 kHz after the effect of the different electrode impedances was removed. Finally, SIP measurements on variably saturated unconsolidated sand were made.Here, the plausibility of the phase of the electrical resistivity was improved for frequencies up to 1 kHz, but errors remained for higher frequencies due to the approximate nature of the electrode impedance estimates and some remaining unknown parasitic capacitances that led to current leakage. It was concluded that the proposed correction procedure for SIP measurements improved the accuracy of the phase measurements by an order of magnitude in the kHz frequency range. Further improvement of this accuracy requires a method to accurately estimate parasitic capacitances in situ.
Identifier(s):DOI: 10.1016/j.jappgeo.2015.11.008
Responsible Party
Creator(s):Author: Johan A. Huisman
Author: Egon Zimmermann
Author: Odilia Esser
Author: Franz-Hubert Haegel
Author: Andrea Treichel
Author: Harry Vereecken
Publisher:Elsevier
Topic
TR32 Topic:Soil
Related Sub-project(s):A3
Subject(s):CRC/TR32 Keywords: SIP
File Details
File Name:Huisman2016.pdf
Data Type:Text
File Size:1172 kB (1.145 MB)
Date(s):Created: 2017-05-29
Mime Type:application/pdf
Data Format:PDF
Language:English
Status:Completed
Constraints
Download Permission:OnlyTR32
General Access and Use Conditions:According to the TR32DB data policy agreement.
Access Limitations:According to the TR32DB data policy agreement.
Geographic
North:-no map data
East:-
South:-
West:-
Measurement Region:Laboratory
Measurement Location:--Laboratory--
Specific Informations - Publication
Status:Published
Review:PeerReview
Year:2016
Type:Article
Article Type:Journal
Source:Journal of Applied Geophysics
Volume:135
Number Of Pages:8
Page Range:466 - 473
Metadata Details
Metadata Creator:Johann Alexander (Sander) Huisman
Metadata Created:2017-05-29
Metadata Last Updated:2017-06-01
Subproject:A3
Funding Phase:2
Metadata Language:English
Metadata Version:V41
Dataset Metrics
Page Visits:111
Metadata Downloads:0
Dataset Downloads:0
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Features