Estimation of soil hydraulic parameters by integrated hydrogeophysical inversion of time-lapse GPR data measured at Selhausen, Germany

Handle URI:
http://hdl.handle.net/10754/564561
Title:
Estimation of soil hydraulic parameters by integrated hydrogeophysical inversion of time-lapse GPR data measured at Selhausen, Germany
Authors:
Jadoon, Khan; Weihermüller, Lutz; Verrecken, Harry; Lambot, Sébastien
Abstract:
We present an integrated hydrogeophysical inversion approach that uses time-lapse off-ground ground-penetrating radar (GPR) data to estimate soil hydraulic parameters, and apply it to a dataset collected in the field. Off-ground GPR data are mainly sensitive to the near-surface water content profile and dynamics, and are thus related to soil hydraulic parameters, such as the parameters of the hydraulic conductivity and water retention functions. The hydrological simulator HYDRUS 1-D was used with a two-layer single- and dual-porosity model. To monitor the soil water content dynamics, time-lapse GPR and time domain reflectometry (TDR) measurements were performed, whereby only GPR data was used in the inversion. The dual porosity model provided better results compared to the single porosity model for describing the soil water dynamics, which is supported by field observations of macropores. Furthermore, the GPR-derived water content profiles reconstructed from the integrated hydrogeophysical inversion were in good agreement with TDR observations. These results suggest that the proposed method is promising for non-invasive characterization of the shallow subsurface hydraulic properties and monitoring water dynamics at the field scale.
KAUST Department:
Water Desalination and Reuse Research Center (WDRC); Water Desalination and Reuse Research Center
Publisher:
Institute of Electrical and Electronics Engineers (IEEE)
Journal:
2012 14th International Conference on Ground Penetrating Radar (GPR)
Conference/Event name:
2012 14th International Conference on Ground Penetrating Radar, GPR 2012
Issue Date:
Jun-2012
DOI:
10.1109/icgpr.2012.6254952
Type:
Conference Paper
ISBN:
9781467326636
Appears in Collections:
Conference Papers; Water Desalination and Reuse Research Center (WDRC)

Full metadata record

DC FieldValue Language
dc.contributor.authorJadoon, Khanen
dc.contributor.authorWeihermüller, Lutzen
dc.contributor.authorVerrecken, Harryen
dc.contributor.authorLambot, Sébastienen
dc.date.accessioned2015-08-04T07:04:00Zen
dc.date.available2015-08-04T07:04:00Zen
dc.date.issued2012-06en
dc.identifier.isbn9781467326636en
dc.identifier.doi10.1109/icgpr.2012.6254952en
dc.identifier.urihttp://hdl.handle.net/10754/564561en
dc.description.abstractWe present an integrated hydrogeophysical inversion approach that uses time-lapse off-ground ground-penetrating radar (GPR) data to estimate soil hydraulic parameters, and apply it to a dataset collected in the field. Off-ground GPR data are mainly sensitive to the near-surface water content profile and dynamics, and are thus related to soil hydraulic parameters, such as the parameters of the hydraulic conductivity and water retention functions. The hydrological simulator HYDRUS 1-D was used with a two-layer single- and dual-porosity model. To monitor the soil water content dynamics, time-lapse GPR and time domain reflectometry (TDR) measurements were performed, whereby only GPR data was used in the inversion. The dual porosity model provided better results compared to the single porosity model for describing the soil water dynamics, which is supported by field observations of macropores. Furthermore, the GPR-derived water content profiles reconstructed from the integrated hydrogeophysical inversion were in good agreement with TDR observations. These results suggest that the proposed method is promising for non-invasive characterization of the shallow subsurface hydraulic properties and monitoring water dynamics at the field scale.en
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)en
dc.titleEstimation of soil hydraulic parameters by integrated hydrogeophysical inversion of time-lapse GPR data measured at Selhausen, Germanyen
dc.typeConference Paperen
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)en
dc.contributor.departmentWater Desalination and Reuse Research Centeren
dc.identifier.journal2012 14th International Conference on Ground Penetrating Radar (GPR)en
dc.conference.date4 June 2012 through 8 June 2012en
dc.conference.name2012 14th International Conference on Ground Penetrating Radar, GPR 2012en
dc.conference.locationShanghaien
dc.contributor.institutionAgrosphere (IBG-3), Forschungszentrum Jülich GmbH, Jülich, Germanyen
dc.contributor.institutionEarth and Life Institute, Université Catholique de Louvain, Louvain-la-Neuve, Belgiumen
kaust.authorJadoon, Khanen
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