| 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. |
| Genre: | Article |
| ProdID: | 70023806 |
| Citation Author: | Tiedeman, C. R.; Hsieh, P. A. |
| Citation Contributing Office: | |
| Citation Datum: | |
| Citation Day: | |
| Citation Edition: | |
| Citation Editor: | |
| Citation End Page: | 174 |
| Citation Issue: | 277 |
| Citation Keywords: | |
| Citation Language: | English |
| Citation Larger Work Title: | IAHS-AISH Publication |
| Citation LatN: | |
| Citation LatS: | |
| Citation LonE: | |
| Citation LonW: | |
| Citation Month: | |
| Citation No Pagination: | |
| Citation Number Of Pages: | 7 |
| Citation Online Only Flag: | |
| Citation Phsyical Description: | |
| Citation Projection: | |
| Citation Public Comments: | |
| Citation Publisher: | |
| Citation Series: | |
| Citation Series Code: | |
| Citation Series Number: | |
| Citation Search Results Text: | Evaluation of longitudinal dispersivity estimates from forced-gradient tracer tests in heterogeneous aquifers; 2002; Article; Journal; IAHS-AISH Publication; Tiedeman, C. R.; Hsieh, P. A. |
| Citation Start Page: | 168 |
| Citation Volume: | |
| Citation Year: | 2002 |
| Type: | citation/reference |
| Text: | Evaluation of longitudinal dispersivity estimates from forced-gradient tracer tests in heterogeneous aquifers; 2002; Article; Journal; IAHS-AISH Publication; Tiedeman, C. R.; Hsieh, P. A. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Tue, 1 Jan 2002 00:00 -0600 |
| Publisher: | |
