Abstract
Presents designs for disc permeameters for both positive and negative water supply heads. The effects of the water supply membrane and soil contact material on permeameter performance are examined using approximate quasi-analytic solutions to the flow equation. This analysis provides approximate criteria for the selection of membrane and soil contact materials. Limitations to performance caused by restricted air entry are considered and design criteria are given also. Presents in situ tests of the disc permeameter for the early stages of one-dimensional infiltration and an example of the deterministic variation of sorptivity of a field soil with supply potential. Measures ponded and unsaturated sorptivities in situ with disc permeameters to find the saturated hydraulic conductivity and flow-weighted mean characteristic pore dimension of a field soil. -from Authors
| Original language | English |
|---|---|
| Pages (from-to) | 1205-1215 |
| Number of pages | 11 |
| Journal | Soil Science Society of America Journal |
| Volume | 52 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - Sept 1988 |
| Externally published | Yes |