Monitoring infiltration processes with high-resolution surface-based Ground-Penetrating Radar

• Verfasst von: Klenk, Patrick [VerfasserIn]
• Verfasst von: Jaumann, Stefan [VerfasserIn]
• Verfasst von: Roth, Kurt [VerfasserIn]
• Titel: Monitoring infiltration processes with high-resolution surface-based Ground-Penetrating Radar
• Verf.angabe: P. Klenk, S. Jaumann, and K. Roth
• E-Jahr: 2015
• Jahr: 20 November 2015
• Umfang: 32 S.
• Fussnoten: Gesehen am 08.07.2020
• Titel Quelle: Enthalten in: Hydrology and earth system sciences discussions
• Ort Quelle: Katlenburg-Lindau : Soc., 2005
• Jahr Quelle: 2015
• Band/Heft Quelle: 12(2015), 11, Seite 12215-12246
• ISSN Quelle: 1812-2116
• DOI: doi:10.5194/hessd-12-12215-2015
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1713903288

Abstract

In this study, we present a series of high resolution Ground-Penetrating Radar (GPR) measurements monitoring two artificially induced infiltration pulses into two different sands with dual-frequency ground-based GPR. After the application of the second infiltration pulse, the water table in the subsoil was raised by pumping in water from below. The longterm relaxation of the system was then monitored over the course of several weeks. We focused on the capillary fringe reflection and on observed variations in soil water content as derived from direct wave travel times. We discuss the advantages of this dual-frequency approach and show the attainable precision in longterm monitoring of such relaxation processes. Reaching a relative precision of better than 0.001 [-] in water content, we can clearly discern the relaxation of the two investigated sands.