Variability and renewal of Labrador Sea Water in the Irminger Basin in 1991–2004
Bibliographic record
Abstract
Labrador Sea Water (LSW) property variations are analyzed using the data from six hydrographic sections occupied in 1991–2004 in the southern Irminger Basin between Cape Farewell and the Reykjanes Ridge. From 1991 to 1996, the LSW layer became steadily colder and fresher. The decrease in salinity of the LSW detected in 1994 was caused by the local convection, reaching into the weakly stratified layer of LSW advected from the Labrador Sea. Another indication of local deep convection is in the lateral distribution of dissolved oxygen concentrations in the LSW layer (∼1000–2000 m) obtained in 1997 from the section across the Labrador Sea and four sections running ∼100, 135 and 180° (true azimuth) from Cape Farewell. A separate lateral maximum of oxygen content in the LSW layer is revealed in the southern Irminger Sea: the concentrations increased from the Labrador Sea eastern edge toward the Irminger Sea rather than the reverse, as would be expected if there was no local modification of LSW via deep convection. Since 1996, the two‐modal structure of LSW has been observed in the Irminger Basin. The upper mode of LSW detected in 1996 was formed in situ; during the winter of 1996/1997, the upper mode was locally renewed. From 1997 to 2004, the temperature and salinity signatures of the deeper mode considerably eroded due to the lack of the renewal of the deeper LSW reservoir in the Labrador Sea, while the annually renewed upper mode, on the contrary, became more pronounced in the property patterns.
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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".