Monday, 7 November 2005 - 11:15 AM
76-6

Multi-Functional Heat Pulse Probe Measurements of Coupled Vadose Zone Fluxes.

Jan W. Hopmans, University of California Davis, Department Land, Air and Water Resources, 123 Veihmeyer Hall, Davis, CA 95616, Annette P. Mortensen, Geological Institute, ุster Voldgade 10,, Copenhagen University, Copenhagen,, 1350, Denmark, Jirka Simunek, Department of Environmental Science, University of California Riverside, Riverside, CA 92521, Yasushi Mori, Shimane University, 1060 Nishikawatsu-cho, Matsue, 690-8504, Japan, Gerard Kluitenberg, Kansas State University, Department of Agronomy, 2004 Throckmorton, Plant Sciences Center, Manhattan, KS 66506-5501, and Atac Tuli, University of California, Univ. of California, Davis, CA 95616.

Simultaneous measurement of coupled water, heat, and solute transport in unsaturated porous media is made possible with the multi-functional heat pulse probe (MFHPP). The probe combines a heat pulse technique for estimating soil heat properties, water flux, and water content with a Wenner array measurement of bulk soil electrical conductivity. To evaluate the MFHPP, we conducted controlled steady-state flow experiments in a sand column for a wide range of water saturations, flow velocities, and solute concentrations. Experimental data were analyzed by inverse modeling of simultaneous water, heat, and solute transport using an adapted HYDRUS-2D model. The MFHPP holds great promise as an excellent instrument for the continuous wireless monitoring of the vadose zone, including ecological and hydrological applications.

Back to Symposium--Water and Chemical Fluxes from the Pore to Landscape Scale: I
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Back to The ASA-CSSA-SSSA International Annual Meetings (November 6-10, 2005)