TR32-Database: Database of Transregio 32

[685] - Quantitative Two-Layer Conductivity Inversion of Multi-Configuration Electromagnetic Induction Measurements

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

Features
Citation
Mester, A., van der Kruk, J., Zimmermann, E., Vereecken, H., 2011. Quantitative Two-Layer Conductivity Inversion of Multi-Configuration Electromagnetic Induction Measurements. Vadose Zone Journal, 10 (4), 1319 - 1330. DOI: 10.2136/vzj2011.0035.
Identification
Title(s):Main Title: Quantitative Two-Layer Conductivity Inversion of Multi-Configuration Electromagnetic Induction Measurements
Description(s):Abstract: Electromagnetic induction (EMI) measurements return an apparent electrical conductivity that represents a weighted average of the electrical conductivity distribution over a certain depth range. Different sensing depths are obtained for different orientations, different coil off sets, and different frequencies, which, in principle, can be used for a multi -layer inversion. However, instrumental shifts, which often occur in EMI data, prevent the use of quantitative multi -layer inversion. Recently, a new calibration method was developed that uses electrical resistivity tomography (ERT) inversion results and returns quantitative apparent conductivity values. Here, we introduce an inversion scheme that uses calibrated EMI data and inverts for a two-layer earth. The inversion minimizes the misfit between the measured and modeled magnetic field by a combined global and local search and does not use any smoothing parameter. Application of this new scheme to synthetic data demonstrates its efficacy in providing the required physical property information. Inversion of calibrated experimental EMI data using horizontal coplanar (HCP) and vertical coplanar (VCP) loop configurations, coil off sets of 1 and 1.22 m, and frequencies of 8 and 15 kHz provides lateral and vertical conductivity variations very similar to those observed in an elaborate ERT experiment. The inversion is verified using synthetic EMI data calculated from ERT data. Inverting quantitative EMI data using this two-layer inversion enables the quantitative mapping of lateral and vertical electrical conductivity variations over large areas.
Identifier(s):DOI: 10.2136/vzj2011.0035
Responsible Party
Creator(s):Author: Achim Mester
Author: Jan van der Kruk
Author: Egon Zimmermann
Author: Harry Vereecken
Publisher:Soil Science Society of America
Topic
TR32 Topic:Other
Subject(s):CRC/TR32 Keywords: EMI, ERT
File Details
File Name:2011_Mester_VZJ.pdf
Data Type:Text
Size(s):12 Pages
File Size:1252 kB (1.223 MB)
Date(s):Available: 2011-11-04
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:50.8821020
East:6.4672215
South:50.8604361
West:6.4328892
Measurement Region:Ellebach
Measurement Location:Selhausen
Specific Informations - Publication
Status:Published
Review:PeerReview
Year:2011
Type:Article
Article Type:Journal
Source:Vadose Zone Journal
Issue:4
Volume:10
Number Of Pages:12
Page Range:1319 - 1330
Metadata Details
Metadata Creator:Jan van der Kruk
Metadata Created:2013-12-02
Metadata Last Updated:2013-12-02
Subproject:B6
Funding Phase:2
Metadata Language:English
Metadata Version:V40
Dataset Metrics
Page Visits:140
Metadata Downloads:0
Dataset Downloads:2
Dataset Activity
Features