PUBLICATIONS

Water Content Determination in Soils

Robinson D.A., Jones S.B., Blonquist Jr J.M., and Friedman S. P., A Physically Based Water Content/Permittivity Calibration Model for Coarse-textured, Layered Soils, SSSAJ, 69: 1372-1378.

Robinson D.A., Schaap M.G., Or D. and Jones S.B., 2005. On the effective measurement frequency of TDR in dispersive and non-conductive dielectric materials. Water Res Res., 41, WO2007, doi:10.1029/2004WR003816.

Kelleners T.J., Robinson D.A., Shouse P.J., Ayars J.E. and Skaggs T.H., 2005 Frequency dependence of the complex permittivity and its impact on dielectric sensor calibration in soils. Soil Sci. Soc. of Am. J., 69: 67-76.

Kelleners T.J., Soppe R.W.O., Robinson D.A., Schaap M., Ayars J.E. and Skaggs T.H., 2004. Use of electric circuit theory to calibrate capacitance probe sensors for permittivity measurements in non-conductive and conductive media. Soil Sci. Soc. Am. J. 68: 430-439.

Robinson D.A., Jones S.B., Wraith J.M., Or D. and Friedman S.P. 2003. Advances in dielectric and electrical conductivity measurement using time domain reflectometry: Simultaneous measurement of water content and bulk electrical conductivity in soils and porous media. Vadose Zone J. 2: 444-475

Robinson D.A., Schaap M., Jones S.B., Friedman S.P. and Gardner C.M.K., 2003. Considerations for improving the accuracy of permittivity measurement using TDR: Air / water calibration, effects of cable length. Soil Sci. Soc. Am. J., 76: 62-70.

Robinson, D.A. and Friedman, S. P. 2000. Parallel plates compared with conventional rods as TDR waveguides for sensing soil moisture. Subsurface Sensing Technology and Applications, 1:497-511.

Robinson D.A., Gardner C.M.K. and Cooper J.D., 1999. Measurement of relative permittivity in sandy soils using TDR, capacitance and Theta probes: Comparison, including the effects of bulk soil electrical conductivity. J. of Hydrology 223/3-4: 198-211.

Robinson D.A., Gardner C.M.K., Evans J., Cooper J.D., Hodnett M.G. and Bell J.P., 1998. The dielectric calibration of capacitance probes for soil hydrology using an oscillation frequency response model. Hydrology & Earth System Sciences. 2: 83-92.

Robinson, D.A., 2001. Comments on "Field calibration of a capacitance water content probe in fine sand soils." Soil Sci. Soc. Am. J. 65: 1570.

Book Chapters on Water content

Gardner C.M.K., Robinson D.A., Blyth K. and Cooper J.D., 2001. Soil water content measurement. Pages 1-64. In: Soil and Environmental Analysis: Physical Methods: Second Edition. (Ed. Smith K.and Mullins C.). Marcell Dekker, Inc., 270 Madison Ave, New York.

Field Hydrology and mapping soils Using EM Methods

Lesch S.M., Corwin D.L. and Robinson D.A. Apparent soil electrical conductivity mapping as an agricultural tool for arid zone soil. Computers in Agriculture 46: 351-378.

Wraith J.M., Robinson D.A., Jones S.B. and Long D.S. Spatially characterizing bulk electrical conductivity and water content of surface soils with time domain reflectometry, Computers in Agriculture 46: 239-261.

Robinson D.A., 1999. A comparison of soil-water distribution under ridge and bedcultivated potatoes. Agric Water Management. 42: 189-204.

D.A. Robinson, I. Lebron, S.M. Lesch, and P. Shouse., 2004. Minimizing drift in Electrical Conductivity Measurements in High Temperature Environmentsusing the EM-38


Modeling and Measurement of Soil Electrical Properties

Robinson D.A., Jones S.B., Blonquist Jr J.M., and Friedman S. P., A Physically Based Water Content/Permittivity Calibration Model for Coarse-textured, Layered Soils, SSSAJ (In press)

Schaap M., Robinson, D. A., Friedman S.P., Lazar A., 2003. Measurement and modeling of the dielectric permittivity of layered granular media using time domain reflectometry. Soil Sci. Soc. Am. J. 67: 1113-1121.

Friedman S.P. and Robinson D.A., 2002. Particle shape characterization using angle of repose measurements for predicting the effective permittivity and electrical conductivity of saturated granular media. Water Res Res. 38, 11: 0043-1397/02/2001WR000746.

Robinson D.A. and Friedman S.P., 2002. The effective permittivity of dense packing of glass beads, quartz sand and their mixtures immersed in different dielectric backgrounds. J. of Non-Crystalline Solids. 305:261-267.

Robinson, D.A. and Friedman, S. P., 2001. Effect of particle size distribution on the effective dielectric permittivity of saturated granular media. Water Res. Res, 37:33-40.

Robinson D.A., Cooper J.D. and Gardner C.M.K., 2001. Modelling the relative permittivity of soils using soil hygroscopic water content. J. of Hydrology. 25: 39-49.


Avalanching of Granular Materials

Lebron I. and Robinson D.A., 2003. Particle size segregation during hand packing of coarse granular materials and impacts on local pore scale structure. Vadose Zone Journal, 2: 330-337.

Robinson D.A. and Friedman S.P., 2002. Observations of the effects of particle shape and particle size distribution on avalanching of granular media. Physica A. 311: 97-110.


Dielectric Properties of Soil Minerals

Lebron I., Robinson D.A., Goldberg, S., and Lesch S.M. The Dielectric Permittivity of Calcite and Arid Zone Soils with Carbonate Minerals. Soil Sci. Soc. Am. J, 68: 1549-1559.

Robinson D.A., 2004. Calculating the dielectric properties of temperate and tropical soil minerals from ion polarizabilities using the Clausius-Mosotti equation. Soil Sci. Soc. Am. J, 68: 1780-1785.

Robinson D.A., 2004. Measurement of the solid dielectric permittivity of clay minerals and granular samples using a TDR immersion method. Vadose Zone Journal, 3: 705-713.

Robinson, D. A. and Friedman S. P., 2003. A method for measuring the solid particle permittivity or electrical conductivity of rocks, sediments and granular materials, J Geophys. Res. B., 108: 0148-0227/03/2001JB000691.

Robinson D.A., Bell J.P. and Batchelor C.H., 1994. The influence of iron minerals on the determination of soil water content using dielectric techniques. J. of Hydrology 161:169-180.