High velocities and seismic anisotropy in Pleistocene turbidites off Western Canada
Bibliographic record
Abstract
Summary. The Winona Basin is a young deep water basin along the base of the continental slope off central British Columbia which is filled primarily with turbidite sediments. Seismic reflection profiles in the basin indicate that in places the sediment thickness is greater than 4.0 s two-way travel time, and simple interpretations of seismic refraction data indicate that velocities up to 6.0 kni s- * exist within the sediment section. Because the turbidite sediments are acoustically layered with large velocity contrasts between layers, the sediments are probably highly anisotropic. A simple model t o account for this has been used t o estimate the errors involved in using refraction data t o determine layer thicknesses and average velocities. If the effects of anisotropy are ignored, as they usually are, values for thickness and velocity may be overestimated by as much as 10-20 per cent. Even the corrected velocities are still high, however, and the inferred high densities and high degrees of lithification are remarkable when the youth of the sediments is considered. Nearly the entire depositional history is contained within the Pleistocene, and
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.002 | 0.002 |
| Science and technology studies | 0.003 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.003 | 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".