HR: 1340h
AN: H13I-1416    [Abstracts]
TI: Scaling Relations Between Laboratory and Field Scale Hysteretic Measurements for a Coarse Sandy Loam Soil
AU: * Little, J J
EM: justinl@arczip.com
AF: University of Colorado at Denver and Health Sciences Center, Campus Box 172, PO Box 173364, Denver, CO 80217-3364 United States
AU: Tindall, J A
EM: jtindall@usgs.gov
AF: U.S. Geological Survey, Box 25046, M.S. 413 Federal Center, Lakewood, CO 80225 United States
AU: Friedel, M J
H13I-1416 AF: U.S. Geological Survey, Box 25046, MS 964 Denver Federal Center, Lakewood, CO 80225 United States
AB: The goal of this study was to understand the relationship of hydraulic parameters between soil samples of different scale and describe that relationship in mathematical terms. Consequently, the primary objective is to quantify the functional relationship, including predictive and parameter uncertainty associated with it, which exists between soil hydraulic parameters and scale. Samples of varying, intact volumes of coarse sandy-loam soils included 28,274 cm2 (h=40 cm, dia=30 cm), 139.7 cm2 (h=6.1 cm, dia=5.4 cm) and 648.7 cm2 (h=15.5 cm, dia=7.3 cm). The largest cores were collected as described by Tindall et al. (1992). Smaller sub-samples were prepared as sealed weighable cells, originally described by Reginato and van Bavel (1962). Using hanging columns of water to apply suction, data were collected for all sample sizes for moisture absorption and moisture retention. The results of this research shows a difference in disparate scale between soil samples and, describes a relationship relating to the samples. Further, parameter uncertainty has been described using an inverse Monte Carlo calibration analysis.
DE: 1839 Hydrologic scaling
DE: 1846 Model calibration (3333)
SC: Hydrology [H]
MN: Fall Meeting 2005