HR: 11:20h
AN: H32A-04    [Abstracts]
TI: Vadose Zone Hydrology Across Scales: Modeling Versus Experimental Challenges
AU: * Hopmans, J W
EM: jwhopmans@ucdavis.edu
AF: University of California, Dept. LAWR 123 Veihmeyer Hall, Davis, CA 95616 United States
AB: Vadose zone hydrology faces both experimental and modeling challenges, however, they occur in different spatial domains. Both experimental and modeling advances are naturally coupled through use of parameter optimization techniques that estimate scale-appropriate flow and transport parameters. The presentation will demonstrate that state-of-the-art experimental techniques are becoming increasingly available that apply to the pore scale, but that knowledge of the relevant mechanisms at the pore scale hinder modeling advances at that scale. In contrast, vadose zone hydrology at the landscape scale seems more advanced in the modeling aspects than experimentally. In fact, scale-appropriate measurements are increasingly required to validate multi-dimensional flow and transport at the landscape scale. Both numerical and experimental examples will be presented.
DE: 1866 Soil moisture
DE: 1875 Unsaturated zone
DE: 1894 Instruments and techniques
SC: Hydrology [H]
MN: 2005 Joint Assembly