Multi-component investigation of fracturing in a potash mining region in Saskatchewan, Canada
Bibliographic record
Abstract
Fractures in the subsurface are known to impact the quality of seismic imaging. This multi-component, time-lapse study focuses on the fracture-induced anisotropy within a potash mining region in the Williston Basin. The area of interest is the Dawson Bay Formation, a fractured carbonate overlying the Prairie Evaporite Formation which contains the potash ore deposits. PP and PS full azimuth volumes were divided into 4 sub-volumes consisting of a stack of source-receiver ray paths consisting of a 45 degree aperture for both a baseline and monitor surface. Through their interpretation and travel-time analysis, weak azimuthal velocity anisotropy was observed within the Dawson Bay Formation. Analysis of Vp/Vs indicates that there is a significant decrease in shear-wave velocity in the centre of the survey between the Birdbear and Winnipegosis formations, including the Dawson Bay Formation. These Vp/Vs results, along with travel time differences, confirm the presence of fracturing in the subsurface, and more specifically, within the Dawson Bay carbonates.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.002 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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 source (direct Gemma or distilled Codex), 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".