| Abstract: | The establishment of steady unsaturated flow in a centrifuge permits accurate measurement of small values of hydraulic conductivity (K). This method can provide a recharge determination if it is applied to an unsaturated core sample from a depth at which gravity alone drives the flow. A K value determined at the in situ water content indicates the long-term average recharge rate at a point. Tests of this approach have been made at two sites. For sandy core samples a better knowledge of the matric pressure profiles is required before a recharge rate can be determined. Fine-textured cores required new developments of apparatus and procedures, especially for making centrifuge measurements with minimal compaction of the samples. -from Authors |
| Genre: | Article |
| ProdID: | 70017578 |
| Citation Author: | Nimmo, J. R.; Stonestrom, D. A.; Akstin, K. C. |
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| Citation End Page: | 56 |
| Citation Issue: | 1 |
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| Citation Language: | English |
| Citation Larger Work Title: | Soil Science Society of America Journal |
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| Citation Number Of Pages: | 8 |
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| Citation Search Results Text: | The feasibility of recharge rate determinations using the steady- state centrifuge method; 1994; Article; Journal; Soil Science Society of America Journal; Nimmo, J. R.; Stonestrom, D. A.; Akstin, K. C. |
| Citation Start Page: | 49 |
| Citation Volume: | 58 |
| Citation Year: | 1994 |
| Type: | citation/reference |
| Text: | The feasibility of recharge rate determinations using the steady- state centrifuge method; 1994; Article; Journal; Soil Science Society of America Journal; Nimmo, J. R.; Stonestrom, D. A.; Akstin, K. C. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
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