Examples of transient sounding from groundwater exploration in sedimentary aquifers
Links
- More information: Publisher Index Page (via DOI)
- Download citation as: RIS | Dublin Core
Abstract
Examples of the use of transient electromagnetic soundings for three ground-water exploration problems in sedimentary aquifers are given. The examples include: (1) estimating depths to water table and bedrock in an alluvium-filled basin, (2) mapping a confined fresh-water aquifer in bedrock sediments, and (3) locating a freshwater/salt-water interface in a glacial-outwash aquifer. The technique works quite well for these problems within the limitations imposed by the problem of equivalence. For thin conductive targets (S-equivalence) such as a salt-water lens, the ratio of the layer thickness to its resistivity can be determined, but not the individual layer parameters. The thickness of thin resistive zones (H-equivalence) can be resolved, but the resistivity of such layers is not well determined. The problem of H-equivalence is more severe than the S-equivalence. Equivalence imposes restrictions on the transient sounding method for some ground-water exploration problems. Model studies prior to field work can be used to assess the usefulness of the technique for a particular exploration objective.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Examples of transient sounding from groundwater exploration in sedimentary aquifers |
| Series title | Groundwater |
| DOI | 10.1111/j.1745-6584.1987.tb02209.x |
| Volume | 25 |
| Issue | 6 |
| Year Published | 1987 |
| Language | English |
| Publisher | National Groundwater Association |
| Description | 8 p. |
| First page | 685 |
| Last page | 692 |
| Google Analytic Metrics | Metrics page |