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The Feasibility of Shallow Time Domain Reflectometry Probes to Describe Solute Transport Through Undisturbed Soil Cores

Jaehoon Leea, Robert Horton*,b and Dan B. Jaynesc

a Dep. of Biosystems Engineering, Environmental, and Soil Sciences, Univ. of Tennessee, Knoxville, TN 37901
b Dep. of Agronomy, Iowa State Univ., Ames, IA 50011
c USDA-ARS, National Soil Tilth Lab., 2150 Pammel Dr., Ames, IA 50011



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Fig. 1. The relative resident conentrations, C(t)/C0, obtained from the shallow (0- to 2-cm soil layer) time domain reflectometry probe for three soil columns. The x-axis is based on the 2-cm sampling layer.

 


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Fig. 2. The predicted effluent breakthrough curves (BTCs) are plotted along the observed BTCs for the three soil columns. The predicted BTCs are generated using the estimated parameters shown in Table 1. Analytical solutions of the mobile–immobile model from CXTFIT are used to calculate the effluent BTCs.

 





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Copyright © 2002 by the Soil Science Society of America.