scholarly journals High-resolution water content estimation from surface-based ground-penetrating radar reflection data by impedance inversion

2012 ◽  
Vol 48 (8) ◽  
Author(s):  
C. Schmelzbach ◽  
J. Tronicke ◽  
P. Dietrich
Keyword(s):  
High Resolution ◽  
Water Content ◽  
Ground Penetrating Radar ◽  
Reflection Data ◽  
Impedance Inversion ◽  
Radar Reflection ◽  
Ground Penetrating

scholarly journals Quantitative high-resolution observations of soil water dynamics in a complicated architecture using time-lapse ground-penetrating radar

2015 ◽  
Vol 19 (3) ◽  
pp. 1125-1139 ◽  
Author(s):  
P. Klenk ◽  
S. Jaumann ◽  
K. Roth
Keyword(s):  
High Resolution ◽  
Water Content ◽  
Soil Water ◽  
Ground Penetrating Radar ◽  
Time Lapse ◽  
Test Site ◽  
Water Dynamics ◽  
Soil Water Dynamics ◽  
Capillary Fringe ◽  
Ground Penetrating

Abstract. 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 that 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 the study of soil water dynamics with GPR under a wide range of different conditions. Here, we assess in particular (i) the feasibility of monitoring the dynamic shape of the capillary fringe reflection and (ii) the relative precision of monitoring soil water dynamics averaged over the whole vertical extent by evaluating the bottom 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.

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

2015 ◽  
Vol 12 (11) ◽  
pp. 12215-12246 ◽  
Author(s):  
P. Klenk ◽  
S. Jaumann ◽  
K. Roth
Keyword(s):  
High Resolution ◽  
Water Content ◽  
Ground Penetrating Radar ◽  
Relaxation Processes ◽  
Dual Frequency ◽  
Relative Precision ◽  
Direct Wave ◽  
Wave Travel ◽  
Ground Penetrating ◽  
Better Than

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.

scholarly journals Quantitative high-resolution observations of soil water dynamics in a complicated architecture with time-lapse Ground-Penetrating Radar

2014 ◽  
Vol 11 (11) ◽  
pp. 12365-12404
Author(s):  
P. Klenk ◽  
S. Jaumann ◽  
K. Roth
Keyword(s):  
High Resolution ◽  
Water Content ◽  
Soil Water ◽  
Ground Penetrating Radar ◽  
Time Lapse ◽  
Test Site ◽  
Water Dynamics ◽  
Soil Water Dynamics ◽  
Capillary Fringe ◽  
Ground Penetrating

Abstract. 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.

Conditional stochastic inversion of common-offset ground-penetrating radar reflection data

2020 ◽  
Author(s):  
Zhiwei Xu ◽  
James Irving ◽  
Yu Liu ◽  
Peimin Zhu ◽  
Klaus Holliger
Keyword(s):  
Ground Penetrating Radar ◽  
Stochastic Inversion ◽  
Reflection Data ◽  
Radar Reflection ◽  
Ground Penetrating

scholarly journals Estimation of the 3D correlation structure of an alluvial aquifer from surface‐based multi‐frequency ground‐penetrating radar reflection data

2019 ◽  
Vol 68 (2) ◽  
pp. 678-689
Author(s):  
Zhiwei Xu ◽  
James Irving ◽  
Kyle Lindsay ◽  
John Bradford ◽  
Peimin Zhu ◽  
...  
Keyword(s):  
Ground Penetrating Radar ◽  
Alluvial Aquifer ◽  
Correlation Structure ◽  
Reflection Data ◽  
Radar Reflection ◽  
Ground Penetrating
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