Hydrogeophysical investigation of contaminant distribution at a closed landfill in southwestern ontario, canada
Bibliographic record
Abstract
The study looked at the application of geophysical and groundwater modeling methods to investigate the underground leachate distribution at a closed municipal landfill. Firstly, the apparent conductivity of the landfill was mapped using two coil separations. The resulting maps displayed a high conductive zone in the western portion of the site with measurements averaging between 35mS/m to 3000mS/m. The resistivity of the same high conductive zone was measured with resistivity profiles showing the waste material occupying the upper sand aquifer as a low resistivity anomaly ranging between 1.2 - 6 ohm*m. Results from the geophysical surveys were used to prepare two conceptual models (S-N and W-E) of the landfill. The groundwater modeling results show the contaminants occupying mainly the upper sand aquifer and most of the silt/sand aquitard after 1000 years. In most cases the lower sand aquifer remained free from contamination.
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How this classification was reachedexpand
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 | 0.001 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".