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Evaluation of longitudinal dispersivity estimates from forced-gradient tracer tests in heterogeneous aquifers

Acta Universitatis Carolinae, Geologica

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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 mildly heterogeneous aquifers, for tests with relatively large tracer transport distances, ??L estimates from the two test types are generally similar, and are also similar to ??L values determined from natural-gradient tracer simulations. In highly heterogeneous aquifers, ??L estimates from two-well tests are generally larger than those from radial-flow tests, and the ??L estimates from both test types are typically smaller than the ??L values determined from natural-gradient simulations.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Evaluation of longitudinal dispersivity estimates from forced-gradient tracer tests in heterogeneous aquifers
Series title:
Acta Universitatis Carolinae, Geologica
Volume
46
Issue:
2-3
Year Published:
2002
Language:
Czech
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
131
Last page:
134
Number of Pages:
4