Evaluation of Water Flux Above A Deep Water Table Using Thermocouple Psychrometers1
- C. G. Enfield,
- J. J. C. Hsieh and
- A. W. Warrick2
Deep water flow was evaluated in a Washington desert environment using hydraulic conductivity and potential gradients. Thermocouple psychrometers and temperature transducers were installed to depths of 94 m in the soil profile and used to measure the potential gradients. The hydraulic conductivity was calculated using a modified Millington and Quirk equation and the soil moisture characteristic curve. The thermal fluid diffusivity was calculated and used to estimate flow induced by thermal gradients. Under the conditions studied, a more refined analysis of the thermally induced flow is required to give a definite answer as to the direction of flow. It was concluded, however, if flow existed at this location, it was less than 1 cm/year.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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