GPR in Hydrology

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HHH Plain: assessment of accuracydepth of main reflectorP1volumetric water contentVol. water content [−]Soil profileP20 0.1 0.2 0.3 0.401.10.1sandy loamGPR estimate [m]10.90.80.7Depth [m]0.20.30.40.5clay0.6±5 cm0.50.5 0.6 0.7 0.8 0.9 1 1.1Borehole log [m]0.6fine sandTDR: θ =0.23 ± 0.030.7GPR: θ =0.27 ± 0.010.8coarse sandon measured reflector depths from multi-channel GPR measurements andositions at the study site. Dashed lines indicate the standard deviation of250.9Heidelberg UniversityInstitute of Environmental Physics
Rel. humidity [%]HHH Plain: soil hydrology100500atmospheric forcing A P1B40Daily average air temp. [°C]353025201510204060801005 May 10 May 15 May 20 May 25 May12030 MayDate0Precipitation [mm/d]soil water contentridgevalleyamount of waterP2ABditions near the study site for May, 2011, and measurements conductedines indicate the dates of GPR measurements.B-A2622Heidelberg UniversityInstitute of Environmental Physics
Page 1 and 2: GPR in HydrologyKurt Roth, Xicai Pa
Page 3: Soil: Earthʼs multi-scale skinrele
Page 8 and 9: Physically-based model 1∂ t θ +
Page 12 and 13: Outlinemajor findings• fundamenta
Page 14 and 15: GPR fundamentalsspeed some of minor
Page 16 and 17: Single-channel GPRaidentification
Page 19 and 20: Multi-channel GPR: typical setup20H
Page 21: HHH Plain: subsurface architectureP
Page 26 and 27: HHH Plain: soil hydrologysoil water
Page 28 and 29: Constructive inversion:rough concep
Page 30 and 31: Parametric architecture model•con
Page 32 and 33: Assessment of accuracy10Travel Time
Page 34 and 35: Assessment of accuracyvolumetricwat
Page 36: thereʼs light!thank you38Heidelber

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