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Hydrology and Earth System Sciences An interactive open-access journal of the European Geosciences Union
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Discussion papers
https://doi.org/10.5194/hessd-10-4063-2013
© Author(s) 2013. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/hessd-10-4063-2013
© Author(s) 2013. This work is distributed under
the Creative Commons Attribution 3.0 License.

Submitted as: research article 03 Apr 2013

Submitted as: research article | 03 Apr 2013

Review status
This discussion paper is a preprint. A revision of the manuscript for further review has not been submitted.

Temporal stability of soil moisture patterns measured by proximal ground-penetrating radar

J. Minet1,*, N. E. C. Verhoest2, S. Lambot1, and M. Vanclooster1 J. Minet et al.
  • 1Earth and Life Institute, Université catholique de Louvain, Croix du Sud 2 BP 2, 1348 Louvain-la-Neuve, Belgium
  • 2Laboratory of Hydrology and Water Management, Ghent University, Coupure links 653, 9000 Gent, Belgium
  • *now at: Université de Liège, Arlon Campus Environnement, Avenue de Longwy 185, 6700 Arlon, Belgium

Abstract. We analyzed the temporal stability of soil moisture patterns acquired using a proximal ground-penetrating radar (GPR) in a 2.5 ha agricultural field at five different dates over three weeks. The GPR system was mounted on a mobile platform, allowing for real-time mapping of soil moisture with a high spatial resolution (2–5 m). The spatio-temporal soil moisture patterns were in accordance with the meteorological data and with soil moisture measurements from soil core sampling. Time-stable areas showing the field-average moisture could be revealed by two methods: (1) by the computation of temporal stability indicators based on relative differences of soil moisture to the field-average and (2) by the spatial intersection of the areas showing the field-average. Locations where the mean relative difference was below 0.02 m3 m−3 extended up to 10% of the field area whereas the intersection of areas showing the field-average within a tolerance of 0.02 m3 m−3 covered 5% of the field area. Compared to most of the previous studies about temporal stability of soil moisture, time-stable areas and their spatial patterns could be revealed instead of single point locations, owing to the advanced GPR method for real-time mapping. It is believed that determining spatially coherent time-stable areas is more informative rather than determining time-stable points. Other acquisitions over larger time periods would be necessary to assert the robustness of the time-stable areas.

J. Minet et al.
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Status: closed (peer review stopped)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Interactive discussion
Status: closed (peer review stopped)
Status: closed (peer review stopped)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
J. Minet et al.
J. Minet et al.
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