[1452] - Imaging of Buried Paleo-River Channels by Joint Data Inversion of Multiple Electromagnetic Induction Devices

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von Hebel, C., 2014. Imaging of Buried Paleo-River Channels by Joint Data Inversion of Multiple Electromagnetic Induction Devices. PhD Report, IBG-3, Juelich. Accessed from https://www.tr32db.uni-koeln.de/data.php?dataID=1452 at 2019-07-20.
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Title(s):Main Title: Imaging of Buried Paleo-River Channels by Joint Data Inversion of Multiple Electromagnetic Induction Devices
Description(s):Abstract: The current chapter analyzes two campaigns performed at a test site that is characterized by buried paleo-river channels. In ampaign I, the CMD-MiniExplorer (ME) recorded ECa values that were post-calibrated based on ERT data. This survey essentially revealed the paleo-river channels and the observed ECa patterns were related to the leaf area index (LAI) and to soil texture in general [Rudolph et al., 2015]. Here, the quantitative EMI-ECa values were inverted for three-layers that basically show the vertical depth of the paleo-river channels within a limited depth resolution of the upper meter. The depth of investigation was increased in campaign II, that aimed at improved vadose zone characterization by a joint inversion of multiple EMI device data that obtained the lateral and vertical paleo river channel dimensions at selected transects. The EMI data were recorded with the ME plus the custom-made CMD-SpecialEdition (SE) and the DualEM-421 (DUEM). The extended coil configurations of up to 24 coils investigated depths up to 6 m and allowed to extend the SCE inversion code as described in Section 2.2.1 from three- to n-layers. The parallelized code run on the IBG-3 (Institute of Bio- and Geoscience, Agrosphere, Forschungszentrum Jülich) computer cluster using 27 processors with up to 2 GB RAM each. To perform quantitative inversions, the EMI-ECa values were calibrated using the novel post-calibration approach that is based on vertical electrical sounding (VES) data (detailed in the Appendix A). The obtained inversion results were validated with soil cores of relatively deep boreholes.
Responsible Party
Creator(s):Author: Christian von Hebel
Publisher:CRC/TR32 Database (TR32DB)
TR32 Topic:Soil
Related Sub-project(s):B6
Subject(s):CRC/TR32 Keywords: Soil, PhD Report
File Details
File Name:CvH_EMI_report6.pdf
Data Type:Text
File Size:19150 kB (18.701 MB)
Date(s):Valid: 2016-03-24
Mime Type:application/pdf
Download Permission:OnlyTR32
General Access and Use Conditions:According to the TR32DB data policy agreement.
Access Limitations:According to the TR32DB data policy agreement.
Licence:TR32DB Data policy agreement
North:-no map data
Measurement Region:Ellebach
Measurement Location:Selhausen
Specific Informations - Report
Report Date:1st of April, 2014
Report Type:PhD Report
Report City:Juelich
Report Institution:IBG-3
Metadata Details
Metadata Creator:Christian von Hebel
Metadata Created:2016-05-04
Metadata Last Updated:2016-05-06
Funding Phase:2
Metadata Language:English
Metadata Version:V41
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