[en] Ground penetrating radar (GPR) is an efficient method for soil moisture mapping at the field scale, bridging the scale gap between small-scale invasive sensors and large-scale remote sensing instruments. Nevertheless, commonly-used GPR approaches for soil moisture characterization suffer from several limitations and the determination of the uncertainties in GPR soil moisture sensing has been poorly addressed. Herein, we used an advanced proximal GPR method based on full-waveform inversion of ultra-wideband radar data for mapping soil moisture and uncertainties in the soil moisture maps were evaluated by three different methods. First, GPR-derived soil moisture uncertainties were computed from the GPR data inversion, according to measurements and modeling errors and to the sensitivity of the electromagnetic model to soil moisture. Second, the reproducibility of the soil moisture mapping was evaluated. Third, GPR-derived soil moisture was compared with ground-truth measurements (soil core sampling). The proposed GPR method appeared to be highly precise and accurate, with spatially averaged GPR inversion uncertainty of 0.0039 m3m-3, a repetition uncertainty of 0.0169 m3m-3 and an uncertainty of 0.0233 m3m-3 when compared with ground-truth measurements. These uncertainties were mapped and appeared to be related to some local model inadequacies and to small-scale variability of soil moisture. In a soil moisture mapping framework, the interpolation was found to be the determinant source of the observed uncertainties. The proposed GPR method was proven to be largely reliable in terms of accuracy and precision and appeared to be highly efficient for soil moisture mapping at the field scale.
Disciplines :
Environmental sciences & ecology
Author, co-author :
Minet, Julien ; Université Catholique de Louvain - UCL > Earth and Life Institute
Bogaert, P.; Université Catholique de Louvain - UCL > Earth and Life Institute
Vanclooster, M.; Université Catholique de Louvain - UCL > Earth and Life Institute
Lambot, S.; Université Catholique de Louvain - UCL > Earth and Life Institute
Language :
English
Title :
Validation of ground penetrating radar full-waveform inversion for field scale soil moisture mapping
Publication date :
2012
Journal title :
Journal of Hydrology
ISSN :
0022-1694
eISSN :
1879-2707
Publisher :
Elsevier, Netherlands
Volume :
424-425
Pages :
112-123
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
HYDRASENS
Funders :
BELSPO - SPP Politique scientifique - Service Public Fédéral de Programmation Politique scientifique
Alumbaugh D., Chang P., Paprocki L., Brainard J., Glass R.J., Rautman C.A. Estimating moisture contents in the vadose zone using cross-borehole ground penetrating radar: a study of accuracy and repeatability. Water Resources Research 2002, 38:1309.
Benedetto A. Water content evaluation in unsaturated soil using GPR signal analysis in the frequency domain. Journal of Applied Geophysics 2010, 71(1):26-35.
Bikowski, J., van der Kruk, J., Huisman, J.A., Vereecken, H., Vrugt, J.A., 2010. Inversion and sensitivity analysis of GPR data with waveguide dispersion using Markov Chain Monte Carlo simulation. In: Proceedings of the XIII International Conference on Ground Penetrating Radar. Lecce (Italy), 21-25 June 2010, pp. 722-726.
Birchak J.R., Gardner C.G., Hipp J.E., Victor J.M. High dielectric constant microwave probes for sensing soil moisture. Proceedings of IEEE 1974, 62:93-102.
Bogena H., Herbst M., Huisman J., Rosenbaum U., Weuthen A., Vereecken H. Potential of wireless sensor networks for measuring soil water content variability. Vadose Zone Journal 2010, 9:1002-1013.
Chanzy A., Tarussov A., Judge A., Bonn F. Soil water content determination using digital ground penetrating radar. Soil Science Society of America Journal 1996, 60:1318-1326.
Dobson M.C., Ulaby F.F., Hallikainen M.T., El-Rayes M.A. Microwave dielectric behavior of wet soil - part II: dielectric mixing models. IEEE Transactions on Geoscience and Remote Sensing 1985, 23:35-46.
Galagedara L.W., Parkin G.W., Redman J.D. An analysis of the GPR direct ground wave method for soil water content measurement. Hydrological Processes 2003, 17:3615-3628.
Galagedara, L. W., Parkin, G. W., Redman, J. D., P., Endres, A. L., 2005. Field studies of the GPR ground wave method for estimating soil water content during irrigation and drainage. Journal of Hydrology 301, 182-197.
Giroux B., Chouteau M. Quantitative analysis of water-content estimation errors using ground-penetrating radar data and a low-loss approximation. Geophysics 2010, 75(4):WA241-WA249.
Grote K., Hubbard S.S., Rubin Y. Field-scale estimation of volumetric water content using GPR ground wave techniques. Water Resources Research 2003, 39(11):1321.
Grote K., Anger C., Kelly B., Hubbard S., Rubin Y. Characterization of soil water content variability and soil texture using GPR groundwave techniques. Journal of Environmental and Engineering Geophysics 2010, 15(3, Sp. Iss. SI):93-110.
Herkelrath W.N., Hamburg S.P., Murphy F. Automatic, real-time monitoring of soil moisture in a remote field area with time domain reflectometry. Water Resources Research 1991, 27(5):857-864.
Huisman J.A., Bouten W. Accuracy and reproducibility of measuring soil water content with the ground wave of ground-penetrating radar. Journal of Environmental and Engineering Geophysics 2003, 8(2):65-73.
Huisman J.A., Sperl C., Bouten W., Verstraten J.M. Soil water content measurements at different scales: accuracy of time domain reflectometry and ground penetrating radar. Journal of Hydrology 2001, 245:48-58.
Huisman J.A., Snepvangers J.J.J.C., Bouten W., Heuvelink G.B.M. Mapping spatial variation in surface soil water content: comparison of ground-penetrating radar and time domain reflectometry. Journal of Hydrology 2002, 269:194-207.
Huisman J.A., Hubbard S.S., Redman J.D., Annan A.P. Measuring soil water content with ground penetrating radar: a review. Vadose Zone Journal 2003, 2:476-491.
Jacob R.W., Hermance J.F. Assessing the precision of GPR velocity and vertical two-way travel time estimates. Journal of Environmental and Engineering Geophysics 2004, 9(3):143-153.
Jadoon K.Z., Lambot S., Scharnagl B., van der Kruk J., Slob E., Vereecken H. Quantifying field-scale surface soil water content from proximal GPR signal inversion in the time domain. Near Surface Geophysics 2010, 8:483-491.
Jadoon K.Z., Lambot S., Slob E., Vereecken H. Analysis of horn antenna transfer functions and phase-center position for modeling off-ground GPR. IEEE Transactions on Geoscience and Remote Sensing 2011, 49(5):1649-1662.
Jonard F., Weihermüller L., Jadoon K., Schwank M., Vereecken H., Lambot S. Mapping field-scale soil moisture with L-band radiometer and ground-penetrating radar over bare soil. IEEE Transactions on Geoscience and Remote Sensing 2011, 49(8):2863-2875.
Kool J.B., Parker J.C. Analysis of the inverse problem for transient unsaturated flow. Water Resources Research 1988, 24:817-830.
Lambot S., Slob E.C., van den Bosch I., Stockbroeckx B., Vanclooster M. Modeling of ground-penetrating radar for accurate characterization of subsurface electric properties. IEEE Transactions on Geoscience and Remote Sensing 2004, 42:2555-2568.
Lambot S., Antoine M., Vanclooster M., Slob E.C. Effect of soil roughness on the inversion of off-ground monostatic GPR signal for noninvasive quantification of soil properties. Water Resources Research 2006, 42:W03403.
Lambot S., Weihermüller L., Huisman J.A., Vereecken H., Vanclooster M., Slob E.C. Analysis of air-launched ground-penetrating radar techniques to measure the soil surface water content. Water Resources Research 2006, 42:W11403.
Lambot S., Slob E.C., Chavarro D., Lubczynski M., Vereecken H. Measuring soil surface water content in irrigated areas of southern Tunisia using full-waveform inversion of proximal GPR data. Near Surface Geophysics 2008, 6:403-410.
Ledieu J., De Ridder P., De Clercq P., Dautrebande S. A method of measuring soil moisture by time domain reflectometry. Journal of Hydrology 1986, 88:319-328.
Lunt I.A., Hubbard S.S., Rubin Y. Soil moisture content estimation using ground-penetrating radar reflection data. Journal of Hydrology 2005, 307(1-4):254-269.
Marquardt D.W. An algorithm for least-squares estimation of nonlinear parameters. Journal of the Society for Industrial and Applied Mathematics 1963, 11:431-441.
Minet J., Lambot S., Slob E., Vanclooster M. Soil surface water content estimation by full-waveform GPR signal inversion in the presence of thin layers. IEEE Transactions on Geoscience and Remote Sensing 2010, 48:1138-1150.
Minet, J., Patriarca, C., Slob, E., Vanclooster, M., Lambot, S., 2010b. Characterization of layered media using full-waveform inversion of proximal GPR data. In: Proceedings of the URSI International Symposium on Electromagnetic Theory - EMTS2010. Berlin (Germany), 16-19 August 2010.
Minet J., Wahyudi A., Bogaert P., Vanclooster M., Lambot S. Mapping shallow soil moisture profiles at the field scale using full-waveform inversion of ground penetrating radar data. Geoderma 2011, 161:225-237.
Van Orshoven, J., Vandenbroucke, D., 1993. Guide de l'utilisateur d'aardewerk, base de données pédologiques. Institute for Land and Water Management, K.U. Leuven, Leuven, Belgium. Tech. rep.
Redman, J.D., Davis, J.L., Galagedara, L.W., Parkin, G.W., 2002. Field studies of GPR air launched surface reflectivity measurements of soil water content. In: Koppenjan, S., Hua, L. (Eds.), Proceedings of the Ninth International Conference on Ground Penetrating Radar. Santa Barbara, California, USA, pp. SPIE 4758:156-161.
Redman, J.D., Galagedara, L.W., Parkin, G.W., July 27-30 2003. Measuring Soil Water Content with the Ground Penetrating Radar Surface Reflectivity Method: Effects of Spatial Variability. In: ASAE (Ed.), ASAE-CIGR Meeting. Las Vegas, Nevada, USA, Paper No. 032279.
Robinson D.A., Binley A., Crook N., Day-Lewis F.D., Ferre T.P.A., Grauch V.J.S., Knight R., Knoll M., Lakshmi V., Miller R., Nyquist J., Pellerin L., Singha K., Slater L. Advancing process-based watershed hydrological research using near-surface geophysics: a vision for, and review of, electrical and magnetic geophysical methods. Hydrological Processes 2008, 22(18):3604-3635.
Robinson D.A., Campbell C.S., Hopmans J.W., Hornbuckle B.K., Jones S.B., Knight R., Ogden F., Selker J., Wendroth O. Soil moisture measurement for ecological and hydrological watershed-scale observatories: a review. Vadose Zone Journal 2008, 7(1):358-389.
Sambuelli L. Uncertainty propagation using some common mixing rules for the modelling and interpretation of electromagnetic data. Near Surface Geophysics 2009, 7(4, Sp. Iss.):285-296.
Serbin G., Or D. Near-surface water content measurements using horn antenna radar: methodology and overview. Vadose Zone Journal 2003, 2:500-510.
Serbin G., Or D. Ground-penetrating radar measurement of crop and surface water content dynamics. Remote Sensing of Environment 2005, 96:119-134.
Slob E., Sato M., Olhoeft G. Surface and borehole ground-penetrating-radar developments. Geophysics 2010, 75(5):A103-A120.
Steelman C.M., Endres A.L. Comparison of petrophysical relationships for soil moisture estimation using GPR ground waves. Vadose Zone Journal 2011, 10(1):270-285.
Topp G.C., Davis J.L., Annan A.P. Electromagnetic determination of soil water content: measurements in coaxial transmission lines. Water Resources Research 1980, 16:574-582.
van der Kruk J. Properties of surface waveguides derived from inversion of fundamental and higher mode dispersive GPR data. IEEE Transactions on Geoscience and Remote Sensing 2006, 44(10):2908-2915.
van der Kruk J., Jacob R.W., Vereecken H. Properties of precipitation-induced multilayer surface waveguides derived from inversion of dispersive TE and TM GPR data. Geophysics 2010, 75(4):WA263-WA273.
Vereecken H., Huisman J.A., Bogena H., Vanderborght J., Vrugt J.A., Hopmans J.W. On the value of soil moisture measurements in vadose zone hydrology: a review. Water Resources Research 2008, 44:W00D06.
Vrugt J.A., ter Braak C.J.F., Diks C.G.H., Robinson B.A., Hyman J.M., Higdon D. Accelerating Markov Chain Monte Carlo simulation by differential evolution with self-adaptive randomized subspace sampling. International Journal of Nonlinear Sciences and Numerical Simulation 2009, 10(3):273-290.
Wagner W., Blöschl G., Pampaloni P., Calvet J.C., Bizzarri B., Wigneron J.P., Kerr Y. Operational readiness of microwave remote sensing of soil moisture for hydrologic applications. Nordic Hydrology 2007, 38(1):1-20.
Weihermüller L., Huisman J.A., Lambot S., Herbst M., Vereecken H. Mapping the spatial variation of soil water content at the field scale with different ground penetrating radar techniques. Journal of Hydrology 2007, 340:205-216.
Wijewardana Y.G.N.S., Galagedara L.W. Estimation of spatio-temporal variability of soil water content in agricultural fields with ground penetrating radar. Journal of Hydrology 2010, 391(1-2):26-35.