PubAg

Main content area

Rapid field measurement of air entry value and hydraulic conductivity of soil as significant parameters in flow system analysis

Author:
Bouwer, H.
Source:
Water resources research 1966 v.2 no.4 pp. 729
ISSN:
0043-1397
Subject:
soil air, soil water, saturated hydraulic conductivity, permeability, flow, measurement
Abstract:
Field measurements of air entry value and hydraulic conductivity of soil are obtained with a covered cylinder infiltrometer equipped with standpipe and vacuum gage. Tests are normally completed in approximately 30 minutes. The resulting data are used to construct step functions relating hydraulic conductivity to (negative) soil water pressure for sorption and desorption. These functions may be used as simplified hydraulic conductivity characteristics to include negative-pressure flow in the analysis of subsurface water movement. Several field and laboratory studies demonstrate the validity of the concepts and the technique. || ABSTRACT AUTHORS: Author
Agid:
50448
Handle:
10113/50448