Three Functions that Model Empirically Measured Unfrozen Water Content Data and Predict Relative Hydraulic Conductivity

Empirically determined data on changes in unfrozen water content occurring as the result of changes in the state of ice and water in soil are discussed with reference to the changes in soil-water retention data for ice- free soil. The similarity between the two types of data is developed. The Brooks...

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Bibliographic Details
Main Author: Black, Patrick B.
Other Authors: COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH
Format: Text
Language:English
Published: 1990
Subjects:
Snow
Ice and Permafrost
*MOISTURE CONTENT
*FROZEN SOILS
*HYDRAULIC MODELS
*CONDUCTIVITY
STATISTICAL DATA
EQUATIONS
ICE
WATER
HYDRAULICS
FUNCTIONS
MATHEMATICAL MODELS
PE61102A
WU002
AST24
BROOKS/COREY EQUATIONS
VAN GENUCHTEN/GARDNER EQUATIONS
Gardner
Corey
Ice
permafrost
Online Access:http://www.dtic.mil/docs/citations/ADA223875
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA223875
Description
Summary:Empirically determined data on changes in unfrozen water content occurring as the result of changes in the state of ice and water in soil are discussed with reference to the changes in soil-water retention data for ice- free soil. The similarity between the two types of data is developed. The Brooks and Corey, van Genuchten and Gardner equations are then shown to be applicable to describing unfrozen water content data. These three functions are then used in the model of Mualem and the relative hydraulic conductivity of frozen soil is predicted. Keywords: Hydraulic models; Mathematical models; Statistical data.

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