Atlas of Sonobuoy velocity analyses in Canada Basin
Bibliographic record
Abstract
Canada Basin of the Arctic Ocean is located in one of the most remote, ice-covered regions on Earth. This Atlas presents the data and velocity models for 144 out of 174 sonobuoys launched throughout and north of the Canada Basin between 2007 and 2011. The data, which are coincident with multichannel seismic reflection profiles, were acquired to map p-wave velocities and thicknesses of the sedimentary column. The refraction and wide-angle reflection data provide the basis for transformation of seismic reflection travel time data to the depth domain. Two independent approaches were utilized to obtain velocity models from the sonobuoy data: forward modeling (FM) of refracted arrivals and semblance analysis (SA) of wide-angle reflections. Sonobuoys with both FM and SA number 99. Agreement between the data sets is excellent. The maximum difference between the methods is about 10% and more than half of the measurements agree to within 5%. This atlas is a first release of these data with preliminary analyses and interpretations.
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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 | 0.001 | 0.002 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.013 | 0.016 |
| Science and technology studies | 0.002 | 0.000 |
| Scholarly communication | 0.002 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.004 | 0.001 |
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".