[883] - Improved characterization of fine texture soils using on-ground GPR full-waveform inversion

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Busch, S., van der Kruk, J., Vereecken, H., 2014. Improved characterization of fine texture soils using on-ground GPR full-waveform inversion. TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, 3947 - 3958. DOI: 10.1109/TGRS.2013.2278297.
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Title(s):Main Title: Improved characterization of fine texture soils using on-ground GPR full-waveform inversion
Description(s):Abstract: Ground-penetrating radar (GPR) uses the recording of electromagnetic waves and is increasingly applied for a wide range of applications. Traditionally, the main focus was on the analysis of the medium permittivity since estimates of the conductivity using the far-field approximation contain relatively large errors and cannot be interpreted quantitatively. Recently, a full-waveform inversion (FWI) scheme has been developed that is able to reliably estimate permittivity and conductivity values by analyzing reflected waves present in on-ground GPR data. It is based on a frequency-domain solution of Maxwell’s equations including far, intermediate, and near fields assuming a 3-D subsurface. Here, we adapt the FWI scheme for on-ground GPR to invert the direct ground wave traveling through the shallow subsurface. Due to possible interference with the airwaves and other reflections, an automated time-domain filter needed to be included in the inversion. In addition to the obtained permittivity and conductivity values, also the wavelet center frequency and amplitude return valuable information that can be used for soil characterization. Combined geophysical measurements were carried out over a silty loam with significant variability in the soil texture. The obtained medium properties are consistent with Theta probe, electromagnetic resistivity tomography, and electromagnetic induction results and enable the formulation of an empirical relationship between soil texture and soil properties. The permittivities and conductivities increase with increasing clay and silt and decreasing skeleton content. Moreover, with increasing permittivities and conductivities, the wavelet center frequency decreases, whereas the wavelet amplitude increases, which is consistent with the radiation pattern and the antenna coupling characteristics.
Identifier(s):DOI: 10.1109/TGRS.2013.2278297
Responsible Party
Creator(s):Author: Sebastian Busch
Author: Jan van der Kruk
Author: Harry Vereecken
Contributor(s):Supervisor: Jan van der Kruk
TR32 Topic:Soil
Subject(s):CRC/TR32 Keywords: Soil Texture
File Details
File Name:Busch_etal_2014.pdf
Data Type:Text
File Size:1542 kB (1.506 MB)
Date(s):Available: 2014-07-07
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 - Publication
Article Type:Journal
Page Range:3947 - 3958
Metadata Details
Metadata Creator:Christian von Hebel
Metadata Created:2014-07-21
Metadata Last Updated:2014-07-21
Funding Phase:2
Metadata Language:English
Metadata Version:V40
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Dataset Downloads:2
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