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Improved Analysis of Heat Pulse Signals for Soil Water Flux Determination

Dep. of Agronomy, Kansas State Univ., Manhattan, KS 66506

T. E. Ochsner

USDA-ARS, Soil and Water Management Research Unit, St. Paul, MN

R. Horton

Dep. of Agronomy, Iowa State Univ., Ames, IA

View larger version (16K): [in this window] [in a new window]   Fig. 1. Ratio of temperature increases at downstream and upstream positions (Td/Tu) as a function of time for Cases A, B, and C. Results were obtained by using Eq. [3]. The parameters used for each case are given in Table 1.

View larger version (10K): [in this window] [in a new window]   Fig. 2. Estimates of soil water flux (J) as a function of time for Cases A, B, and C. Results were obtained by using the values of Td/Tu from Eq. [3] (see Fig. 1) in Eq. [5] and [7]. The parameters used for each case are given in Table 1. The horizontal dashed line in each panel represents the specified value of the flux.