Dielectric permittivity of clay adsorbed water: Effect of salinity
Why this work is in the frame
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Bibliographic record
Abstract
Summary The propagation of ground penetrating RADAR waves through complex earth materials in general and clay minerals in particular remain only poorly understood. Most ground penetrating radar (GPR) studies, however, are conducted through clay-containing materials; and this laboratory study focuses on radar wave behavior through clays in close proximity with salt. This is examined by laboratory measurements of the ‘dielectric constant’ of mixtures of clay and sodium chloride as a function of frequency (0.01 - 3GHz) and salt concentration. The main idea is to investigate the effect of adsorbed water salinity on the conductivity and permittivity: the main factors influencing the speed and attenuation of radar waves. The conductivity and the dielectric permittivity are found to both increase with salt content. The increase in the dielectric permittivity (and resultant decrease in radar wave speed) likely results from increasing charge density and consequent interfacial polarization. The dispersion caused by the interfacial polarization (accumulation of charges at the interface between two phases or two media with different dielectric properties) seems to extend to the upper RADAR band (up to ~500MHz). The results suggest that waves travelling in such a media will suffer attenuation even in the high frequency radar band and therefore the acquired GPR data might not be useful in clayey salt. Furthermore the result suggests increase in the electrical conductivity which is believed to be a measure of the hydraulic conductivity and therefore questioning the idea of using either salt deposits or clay as a geological repositories for chemo-toxic and nuclear wastes.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it