Browsing by Author "Albrecht, Karen A."
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- Observation scale effects on fluid transport behavior of soilAlbrecht, Karen A. (Virginia Tech, 1985-01-15)Variabilities of hydraulic and solute transport properties of soil are examined at three scales: pore-scale, sample volume-scale, and field-scale. Undisturbed soil cores were taken at 19 subsites spaced logarithmically along a 150 m line transect in a Groseclose mapping unit near Blacksburg; Virginia. Three core sizes were taken at each subsite at the soil surface and 0.5 m depth. 'Small' cores were-40x54 mm; 'medium' cores were 60X100 mm; and 'large' cores were 100x150 mm. Macropore effects on solute transport were evaluated using monocontinuum and bicontinuum models. Bicontinuum-predicted solute breakthrough curves (BTC) closely agreed with observed BTC data with mean errors of reduced concentrations
- Physical and chemical characterization of the Groseclose soil mapping unitKool, J. B.; Albrecht, Karen A.; Parker, Jack C.; Baker, James C. (Virginia Agricultural Experiment Station, 1986)