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| Type: | Resource | |
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| Created: | Feb 08, 2023 at 2:42 p.m. | |
| Last updated: | Feb 08, 2023 at 2:42 p.m. | |
| Citation: | See how to cite this resource |
| Sharing Status: | Public |
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| Views: | 312 |
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Abstract
The validation of variable-density flow models simulating seawater intrusion in coastal aquifers requires information about concentration distribution in groundwater. Electrical resistivity tomography (ERT) provides relevant data for this purpose. However, inverse modeling is not accurate because of the non-uniqueness of solutions. Such difficulties in evaluating seawater intrusion can be overcome by coupling geophysical data and groundwater modeling. First, the resistivity distribution obtained by inverse geo-electrical modeling is established. Second, a 3-D variable-density flow hydrogeological model is developed. Third, using Archie's Law, the electrical resistivity model deduced from salt concentration is compared to the formerly interpreted electrical model. Finally, aside from that usual comparison-validation, the theoretical geophysical response of concentrations simulated with the groundwater model can be compared to field-measured resistivity data. This constitutes a cross-validation of both the inverse geo-electrical model and the groundwater model.
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Additional Metadata
| Name | Value |
|---|---|
| DOI | 10.1029/2007GL029981 |
| Depth | 500 |
| Scale | < 10 km² |
| Layers | 1 |
| Purpose | Groundwater resources;Salt water intrusion |
| GroMoPo_ID | 279 |
| IsVerified | True |
| Model Code | SUTRA |
| Model Link | https://doi.org/10.1029/2007GL029981 |
| Model Time | |
| Model Year | 2007 |
| Model Authors | Comte, JC; Banton, O |
| Model Country | Canada |
| Data Available | Report/paper only |
| Developer Email | comte@hydriad.com |
| Dominant Geology | Siliciclastic sedimentary (sandstones, shales) |
| Developer Country | France |
| Publication Title | Cross-validation of geo-electrical and hydrogeological models to evaluate seawater intrusion in coastal aquifers |
| Original Developer | No |
| Additional Information | Combining electrical geophysical surveys to determine saltwater intrusion in the Magdalen Islands, Canada. |
| Integration or Coupling | None of the above |
| Evaluation or Calibration | Static water levels;Contaminant concentrations |
| Geologic Data Availability | No |
How to Cite
This resource is shared under the Creative Commons Attribution CC BY.
http://creativecommons.org/licenses/by/4.0/
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