Evaluation of longitudinal dispersivity estimates from forced-gradient tracer tests in heterogeneous aquifers
IAHS-AISH Publication
By: C. R. Tiedeman and P. A. Hsieh
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Abstract
Converging radial-flow and two-well tracer tests are simulated in two-dimensional aquifers to investigate the effects of heterogeneity and forced-gradient test configuration on longitudinal dispersivity (??L) estimates, and to compare ??L estimates from forced-gradient tests with ??L values that characterize solute spreading under natural-gradient flow. Results indicate that in both mildly and highly heterogeneous aquifers, ??L estimates from two-well tests are generally larger than those from radial-flow tests. In mildly heterogeneous aquifers, ??L estimates from two-well tests with relatively large tracer transport distances are similar to ??L values from natural-gradient simulations. In highly heterogeneous aquifers, ??L estimates from two-well tests at all tracer transport distances are typically smaller than ??L values from natural-gradient simulations.
Suggested Citation
Tiedeman, C.R., Hsieh, P.A., 2002, Evaluation of longitudinal dispersivity estimates from forced-gradient tracer tests in heterogeneous aquifers: IAHS-AISH Publication, no. 277, p. 168-174.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Evaluation of longitudinal dispersivity estimates from forced-gradient tracer tests in heterogeneous aquifers |
| Series title | IAHS-AISH Publication |
| Issue | 277 |
| Year Published | 2002 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | IAHS-AISH Publication |
| First page | 168 |
| Last page | 174 |