Developing joint probability distributions of soil water retention characteristics

Journal Article · Sun May 01 04:00:00 EDT 1988 · Water Resour. Res.; (United States)

DOI:https://doi.org/10.1029/WR024i005p00755· OSTI ID:6770221

Carsel, R F; Parrish, R S

A method is presented for developing probability density functions for parameters of soil moisture relationships of capillary head (h(Phi)) and hydraulic conductivity (K(Phi)). These soil moisture parameters are required for the assessment of water flow and solute transport in unsaturated media. The method employs a statistical multiple regression equations proposed in the literature for estimating (h(Phi)) or (K(Phi)) relationships using the soil saturated water content and the percentages of sand and clay. In the absence of known statistical distributions for either (h(Phi)) or (K(Phi)) relationships, the method facilitates modeling by providing variability estimates that can be used to examine the uncertainty associated with water flow or solute transport in unsaturated media.

• Research Organization: Environmental Protection Agency, Athens, GA (USA)
• OSTI ID: 6770221
• Journal Information: Water Resour. Res.; (United States), Journal Name: Water Resour. Res.; (United States) Vol. 24:5; ISSN WRERA
• Country of Publication: United States
• Language: English

Related Subjects

510200* -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
CONTAMINATION
ENVIRONMENTAL TRANSPORT
EQUATIONS
GROUND WATER
HYDRAULIC CONDUCTIVITY
HYDROGEN COMPOUNDS
MASS TRANSFER
MATHEMATICAL MODELS
MOISTURE
OXYGEN COMPOUNDS
POLLUTANTS
PROBABILITY
SOILS
SOLUTES
WATER