synthetic seismograms from the Jeanne d'Arc basin, offshore Newfoundland
Bibliographic record
Abstract
This investigation in the Jeanne d’Arc Basin, offshore Newfoundland, involves a petrophysical analysis to determine the relationship of Vp/Vs to lithology and the evaluation of PP and PS synthetic seismograms for these Vp/Vs values. The petrophysical analysis indicates that the sediments in the Jeanne d’Arc Basin fit quite well with the Castagna (1985) mud rock line. Our key finding is that for rock in the Jeanne d’Arc Basin, a Vp/Vs of 1.75 should differentiate a clay or calcite-rich bed from a quartz-rich deposit. Analysis of the synthetic seismogram indicates that the Garotta (1987) interval travel-time calculation will successfully determine lithology for formation scale events. Analysis of individual beds indicates that tuning and resolution issues dominate the calculated Vp/Vs. It is recommended that Vp/Vs analysis using interval times should be limited to intervals greater than a wavelength. Vp/Vs analysis using multi-component seismic in the Jeanne d’Arc Basin shows significant promise.
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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 | 0.001 |
| 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) | 0.001 | 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".