Geoscience Reference
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0.25
0.25
0.20
0.20
0.15
0.15
0.10
0.10
0.05
0.05
0.00
0.00
35 cm
125 cm
35 cm
125 cm
0.25
0.25
0.20
0.20
0.15
0.15
0.10
0.10
0.05
0.05
0.00
0.00
35 cm
125 cm
35 cm
125 cm
1.0
1.0
0.8
0.8
0.6
0.6
0.4
0.4
0.2
0.2
0.0
0.0
35 cm
125 cm
35 cm
125 cm
(a)
(b)
fIGURe 25.11 Box plots of the soil water content (top and middle) and NMRA (bottom) distribution at the
two selected soil depths 3 (a) and 13 h (b) after onset of irrigation. The top two graphs characterize the soil
water distribution assuming a layer-wise orientation of the soil hydraulic properties, and the middle graphs
resulted from a heterogeneous distribution of soil properties.
RefeRenCeS
Charlton, M., 2000. Small scale soil-moisture variability estimated using ground penetrating radar.
Extended abstract, 8th International Conference on Ground Penetrating Radar. Gold Coast/Australia,
23-26.05.2000.
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Leading Edge : 445-456.
Dobson, M.C., Ulaby, F.T., Hallikainen, M.T., and El-Rayes, M.A., 1985. Microwave dielectric behavior of wet
soil. Part II. Dielectric mixing models. IEEE Trans. Geosci. Rem. Sensing GE-23 , 35-46.
Flury, M., Flühler, H., Jury, W.A., and Leuenberger, J., 1994. Susceptibility of soils to preferential flow of
water: A field study. Water Resour. Res ., 30: 1945-1954.
Greaves, R.J., Lesmes, D.P., Lee, J.M., and Toksöz, M.N., 1996. Velocity variations and water content esti-
mated from multi-offset, ground-penetrating radar. Geophysics , 61: 683-695.
Hagrey, S.A., Schubert-Klempnauer, T., Wachsmuth, D., Michaelsen, J., and Meissner, R., 1999. Preferential
flow: First results of a full-scale flow model. Geophys. J. Int ., 138: 643-654.
Hölting, B., 1996. Hydrogeologie. Einführung in die allgemeine und angewandte Hydrogeologie. Enke, Stutt-
gart, p. 441.
Hubbard, S.S., Peterson, J.E., Majer, E.L., Zawislanski, P.T., Williams, K.H., Roberts, J., and Wobber, F., 1997.
Estimation of permeable pathways and water content using tomographic radar data. The Leading Edge :
1623 -1628.
Huisman, J.A., 2002. Measuring soil water content with time domain reflectometry and ground-penetrating
radar. Dissertation, University Amsterdam, p. 157.
 
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