Drift pathways on the western Scotian Shelf and its environs
Bibliographic record
Abstract
Particle tracking and velocity streamlines in three-dimensional seasonal mean current and tidal-current fields are used to develop a Lagrangian view of circulation in the western Scotian Shelf region. The flow fields, taken from a finite element prognostic model, have pronounced spatial structure associated with topography and inflows, and this structure is explored with emphasis on implications for biological populations. The velocity streamlines show the seasonal variations in the locations of throughflows, closed (recirculation) areas, and associated saddle points. Particle tracking from the Browns Bank gadoid nursery provides a spring mean drift pattern and retention times similar to those observed. On-shelf drift pathways through Northeast Channel (with peak summer inflow) and the Scotian Gulf are identified and provide a mechanism for supplying slope water, nutrients, and organisms to shelf basins with significant vertical structure. The Nova Scotian Current provides a near-surface drift pathway from zooplankton overwintering sites in Emerald and Lahave basins to the Browns Bank region in spring and winter. A direct near-surface pathway from outer Browns Bank to outer Georges Bank across Northeast Channel provides the potential for farther downstream drift. Sensitivities to additional flow components are identified.
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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 | 0.000 | 0.000 |
| 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".