Quantitative high-resolution observations of soil water dynamics in a complicated architecture with time-lapse ground-penetrating Radar
High-resolution time-lapse Ground-Penetrating Radar (GPR) observations - of advancing and retreating water tables can yield a wealth of - information about near-surface water content dynamics. In this study, we - present and analyze a series of imbibition, drainage and infiltration - experiments wh...
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| Hauptverfasser: | , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
4 November 2014
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| In: |
Hydrology and earth system sciences discussions
Year: 2014, Jahrgang: 11, Heft: 11, Pages: 12365-12404 |
| ISSN: | 1812-2116 |
| DOI: | 10.5194/hessd-11-12365-2014 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.5194/hessd-11-12365-2014 Verlag, lizenzpflichtig, Volltext: http://adsabs.harvard.edu/abs/2014HESSD..1112365K 
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| Verfasserangaben: | P. Klenk, S. Jaumann, and K. Roth |
| Zusammenfassung: | High-resolution time-lapse Ground-Penetrating Radar (GPR) observations - of advancing and retreating water tables can yield a wealth of - information about near-surface water content dynamics. In this study, we - present and analyze a series of imbibition, drainage and infiltration - experiments which have been carried out at our artificial ASSESS test - site and observed with surface based GPR. The test site features a - complicated but known subsurface architecture constructed with three - different kinds of sand. It allows studying soil water dynamics with GPR - under a wide range of different conditions. Here, we assess in - particular (i) the accurate determination of soil water dynamics - averaged over the whole vertical extent by evaluating the bottom - reflection and (ii) the feasibility of monitoring the dynamic shape of - the capillary fringe reflection. The phenomenology of the GPR response - of a dynamically changing capillary fringe is developed from a soil - physical point of view. We then explain experimentally observed - phenomena based on numerical simulations of both the water content - dynamics and the expected GPR response. |
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| Beschreibung: | Gesehen am 20.01.2021 |
| Beschreibung: | Online Resource |
| ISSN: | 1812-2116 |
| DOI: | 10.5194/hessd-11-12365-2014 |